]> git.ipfire.org Git - thirdparty/git.git/blame - configure.ac
Merge branch 'jk/clone-allow-bare-and-o-together'
[thirdparty/git.git] / configure.ac
CommitLineData
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1# -*- Autoconf -*-
2# Process this file with autoconf to produce a configure script.
3
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4## Definitions of private macros.
5
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6# GIT_CONF_SUBST(VAL, VAR)
7# ------------------------
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8# Cause the line "VAR=VAL" to be eventually appended to ${config_file}.
9AC_DEFUN([GIT_CONF_SUBST],
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10[AC_REQUIRE([GIT_CONF_SUBST_INIT])
11config_appended_defs="$config_appended_defs${newline}dnl
12$1=m4_if([$#],[1],[${$1}],[$2])"])
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13
14# GIT_CONF_SUBST_INIT
15# -------------------
16# Prepare shell variables and autoconf machine required by later calls
17# to GIT_CONF_SUBST.
18AC_DEFUN([GIT_CONF_SUBST_INIT],
19 [config_appended_defs=; newline='
20'
21 AC_CONFIG_COMMANDS([$config_file],
22 [echo "$config_appended_defs" >> "$config_file"],
23 [config_file=$config_file
24 config_appended_defs="$config_appended_defs"])])
5b2d1314 25
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26# GIT_ARG_SET_PATH(PROGRAM)
27# -------------------------
28# Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
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29# Optional second argument allows setting NO_PROGRAM=YesPlease if
30# --without-PROGRAM version used.
657b062d 31AC_DEFUN([GIT_ARG_SET_PATH],
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32 [AC_ARG_WITH([$1],
33 [AS_HELP_STRING([--with-$1=PATH],
34 [provide PATH to $1])],
35 [GIT_CONF_APPEND_PATH([$1], [$2])],
36 [])])
37
657b062d 38# GIT_CONF_APPEND_PATH(PROGRAM)
5b2d1314 39# -----------------------------
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40# Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
41# Used by GIT_ARG_SET_PATH(PROGRAM)
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42# Optional second argument allows setting NO_PROGRAM=YesPlease if
43# --without-PROGRAM is used.
657b062d 44AC_DEFUN([GIT_CONF_APPEND_PATH],
5b2d1314 45 [m4_pushdef([GIT_UC_PROGRAM], m4_toupper([$1]))dnl
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46 if test "$withval" = "no"; then
47 if test -n "$2"; then
48 GIT_UC_PROGRAM[]_PATH=$withval
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49 AC_MSG_NOTICE([Disabling use of GIT_UC_PROGRAM])
50 GIT_CONF_SUBST([NO_]GIT_UC_PROGRAM, [YesPlease])
51 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [])
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52 else
53 AC_MSG_ERROR([You cannot use git without $1])
54 fi
55 else
56 if test "$withval" = "yes"; then
57 AC_MSG_WARN([You should provide path for --with-$1=PATH])
58 else
59 GIT_UC_PROGRAM[]_PATH=$withval
60 AC_MSG_NOTICE([Setting GIT_UC_PROGRAM[]_PATH to $withval])
7f8cf48c 61 GIT_CONF_SUBST(GIT_UC_PROGRAM[]_PATH, [$withval])
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62 fi
63 fi
64 m4_popdef([GIT_UC_PROGRAM])])
65
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66# GIT_PARSE_WITH(PACKAGE)
67# -----------------------
68# For use in AC_ARG_WITH action-if-found, for packages default ON.
69# * Set NO_PACKAGE=YesPlease for --without-PACKAGE
70# * Set PACKAGEDIR=PATH for --with-PACKAGE=PATH
71# * Unset NO_PACKAGE for --with-PACKAGE without ARG
72AC_DEFUN([GIT_PARSE_WITH],
5b2d1314 73 [m4_pushdef([GIT_UC_PACKAGE], m4_toupper([$1]))dnl
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74 if test "$withval" = "no"; then
75 NO_[]GIT_UC_PACKAGE=YesPlease
76 elif test "$withval" = "yes"; then
77 NO_[]GIT_UC_PACKAGE=
78 else
79 NO_[]GIT_UC_PACKAGE=
80 GIT_UC_PACKAGE[]DIR=$withval
81 AC_MSG_NOTICE([Setting GIT_UC_PACKAGE[]DIR to $withval])
7f8cf48c 82 GIT_CONF_SUBST(GIT_UC_PACKAGE[DIR], [$withval])
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83 fi
84 m4_popdef([GIT_UC_PACKAGE])])
85
d79d9e13 86# GIT_PARSE_WITH_SET_MAKE_VAR(WITHNAME, VAR, HELP_TEXT)
5b2d1314 87# -----------------------------------------------------
15beaaa3 88# Set VAR to the value specified by --with-WITHNAME.
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89# No verification of arguments is performed, but warnings are issued
90# if either 'yes' or 'no' is specified.
91# HELP_TEXT is presented when --help is called.
92# This is a direct way to allow setting variables in the Makefile.
93AC_DEFUN([GIT_PARSE_WITH_SET_MAKE_VAR],
94[AC_ARG_WITH([$1],
95 [AS_HELP_STRING([--with-$1=VALUE], $3)],
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96 if test -n "$withval"; then
97 if test "$withval" = "yes" -o "$withval" = "no"; then
d79d9e13 98 AC_MSG_WARN([You likely do not want either 'yes' or 'no' as]
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99 [a value for $1 ($2). Maybe you do...?])
100 fi
101 AC_MSG_NOTICE([Setting $2 to $withval])
610473a6 102 GIT_CONF_SUBST([$2], [$withval])
d79d9e13 103 fi)])# GIT_PARSE_WITH_SET_MAKE_VAR
d3a6db98 104
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105#
106# GIT_CHECK_FUNC(FUNCTION, IFTRUE, IFFALSE)
107# -----------------------------------------
108# Similar to AC_CHECK_FUNC, but on systems that do not generate
109# warnings for missing prototypes (e.g. FreeBSD when compiling without
110# -Wall), it does not work. By looking for function definition in
111# libraries, this problem can be worked around.
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112AC_DEFUN([GIT_CHECK_FUNC],[AC_CHECK_FUNC([$1],[
113 AC_SEARCH_LIBS([$1],,
114 [$2],[$3])
115],[$3])])
918c8120 116
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117#
118# GIT_STASH_FLAGS(BASEPATH_VAR)
119# -----------------------------
120# Allow for easy stashing of LDFLAGS and CPPFLAGS before running
121# tests that may want to take user settings into account.
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BW
122AC_DEFUN([GIT_STASH_FLAGS],[
123if test -n "$1"; then
124 old_CPPFLAGS="$CPPFLAGS"
125 old_LDFLAGS="$LDFLAGS"
126 CPPFLAGS="-I$1/include $CPPFLAGS"
127 LDFLAGS="-L$1/$lib $LDFLAGS"
128fi
129])
130
131dnl
132dnl GIT_UNSTASH_FLAGS(BASEPATH_VAR)
133dnl -----------------------------
134dnl Restore the stashed *FLAGS values.
135AC_DEFUN([GIT_UNSTASH_FLAGS],[
136if test -n "$1"; then
137 CPPFLAGS="$old_CPPFLAGS"
138 LDFLAGS="$old_LDFLAGS"
139fi
140])
141
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142## Configure body starts here.
143
144AC_PREREQ(2.59)
145AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
146
147AC_CONFIG_SRCDIR([git.c])
148
149config_file=config.mak.autogen
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150config_in=config.mak.in
151
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152GIT_CONF_SUBST([AUTOCONFIGURED], [YesPlease])
153
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154# Directories holding "saner" versions of common or POSIX binaries.
155AC_ARG_WITH([sane-tool-path],
156 [AS_HELP_STRING(
157 [--with-sane-tool-path=DIR-1[[:DIR-2...:DIR-n]]],
158 [Directories to prepend to PATH in build system and generated scripts])],
159 [if test "$withval" = "no"; then
160 withval=''
161 else
162 AC_MSG_NOTICE([Setting SANE_TOOL_PATH to '$withval'])
163 fi
610473a6 164 GIT_CONF_SUBST([SANE_TOOL_PATH], [$withval])],
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165 [# If the "--with-sane-tool-path" option was not given, don't touch
166 # SANE_TOOL_PATH here, but let defaults in Makefile take care of it.
167 # This should minimize spurious differences in the behaviour of the
168 # Git build system when configure is used w.r.t. when it is not.
169 :])
170
a20b4d89 171## Site configuration related to programs (before tests)
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172## --with-PACKAGE[=ARG] and --without-PACKAGE
173#
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174# Set lib to alternative name of lib directory (e.g. lib64)
175AC_ARG_WITH([lib],
176 [AS_HELP_STRING([--with-lib=ARG],
177 [ARG specifies alternative name for lib directory])],
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178 [if test "$withval" = "no" || test "$withval" = "yes"; then
179 AC_MSG_WARN([You should provide name for --with-lib=ARG])
180 else
181 lib=$withval
182 AC_MSG_NOTICE([Setting lib to '$lib'])
3a34c2bf 183 GIT_CONF_SUBST([lib])
5b2d1314 184 fi])
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185
186if test -z "$lib"; then
187 AC_MSG_NOTICE([Setting lib to 'lib' (the default)])
188 lib=lib
189fi
08df6a30 190
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191AC_ARG_ENABLE([pthreads],
192 [AS_HELP_STRING([--enable-pthreads=FLAGS],
193 [FLAGS is the value to pass to the compiler to enable POSIX Threads.]
194 [The default if FLAGS is not specified is to try first -pthread]
195 [and then -lpthread.]
94b54047 196 [--disable-pthreads will disable threading.])],
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197[
198if test "x$enableval" = "xyes"; then
199 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads])
200elif test "x$enableval" != "xno"; then
201 PTHREAD_CFLAGS=$enableval
202 AC_MSG_NOTICE([Setting '$PTHREAD_CFLAGS' as the FLAGS to enable POSIX Threads])
203else
204 AC_MSG_NOTICE([POSIX Threads will be disabled.])
205 NO_PTHREADS=YesPlease
206 USER_NOPTHREAD=1
207fi],
208[
209 AC_MSG_NOTICE([Will try -pthread then -lpthread to enable POSIX Threads.])
210])
211
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212# Define option to enable JavaScript minification
213AC_ARG_ENABLE([jsmin],
214[AS_HELP_STRING([--enable-jsmin=PATH],
215 [PATH is the name of a JavaScript minifier or the absolute path to one.])],
216[
217 JSMIN=$enableval;
218 AC_MSG_NOTICE([Setting JSMIN to '$JSMIN' to enable JavaScript minifying])
3a34c2bf 219 GIT_CONF_SUBST([JSMIN])
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220])
221
222# Define option to enable CSS minification
223AC_ARG_ENABLE([cssmin],
224[AS_HELP_STRING([--enable-cssmin=PATH],
225 [PATH is the name of a CSS minifier or the absolute path to one.])],
226[
227 CSSMIN=$enableval;
228 AC_MSG_NOTICE([Setting CSSMIN to '$CSSMIN' to enable CSS minifying])
3a34c2bf 229 GIT_CONF_SUBST([CSSMIN])
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230])
231
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232## Site configuration (override autodetection)
233## --with-PACKAGE[=ARG] and --without-PACKAGE
234AC_MSG_NOTICE([CHECKS for site configuration])
235#
236# Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
237# tests. These tests take up a significant amount of the total test time
238# but are not needed unless you plan to talk to SVN repos.
239#
08df6a30 240# Define NO_OPENSSL environment variable if you do not have OpenSSL.
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241#
242# Define OPENSSLDIR=/foo/bar if your openssl header and library files are in
243# /foo/bar/include and /foo/bar/lib directories.
244AC_ARG_WITH(openssl,
245AS_HELP_STRING([--with-openssl],[use OpenSSL library (default is YES)])
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246AS_HELP_STRING([], [ARG can be prefix for openssl library and headers]),
247GIT_PARSE_WITH([openssl]))
248
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249# Define USE_LIBPCRE if you have and want to use libpcre. Various
250# commands such as log and grep offer runtime options to use
251# Perl-compatible regular expressions instead of standard or extended
7599730b 252# POSIX regular expressions. Only libpcre version 2 is supported.
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ÆAB
253#
254# Define LIBPCREDIR=/foo/bar if your PCRE header and library files are in
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255# /foo/bar/include and /foo/bar/lib directories.
256#
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ÆAB
257
258AC_ARG_WITH(libpcre1,
259AS_HELP_STRING([--with-libpcre1],[DEPRECATED]),
260 AC_MSG_ERROR([support for --with-libpcre1 has been removed. Use --with-libpcre2!])
261 )
262
a119f91e 263AC_ARG_WITH(libpcre,
e6c531b8 264AS_HELP_STRING([--with-libpcre],[synonym for --with-libpcre2]),
94da9193 265 if test "$withval" = "no"; then
e6c531b8 266 USE_LIBPCRE2=
94da9193 267 elif test "$withval" = "yes"; then
e6c531b8 268 USE_LIBPCRE2=YesPlease
94da9193 269 else
e6c531b8 270 USE_LIBPCRE2=YesPlease
94da9193
ÆAB
271 LIBPCREDIR=$withval
272 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
e6c531b8 273 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
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ÆAB
274 dnl it yet.
275 GIT_CONF_SUBST([LIBPCREDIR])
276 fi)
277
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ÆAB
278AC_ARG_WITH(libpcre2,
279AS_HELP_STRING([--with-libpcre2],[support Perl-compatible regexes via libpcre2 (default is NO)])
a119f91e 280AS_HELP_STRING([], [ARG can be also prefix for libpcre library and headers]),
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ÆAB
281 if test -n "$USE_LIBPCRE2"; then
282 AC_MSG_ERROR([Only supply one of --with-libpcre or its synonym --with-libpcre2!])
283 fi
284
5b2d1314 285 if test "$withval" = "no"; then
94da9193 286 USE_LIBPCRE2=
5b2d1314 287 elif test "$withval" = "yes"; then
94da9193 288 USE_LIBPCRE2=YesPlease
5b2d1314 289 else
94da9193 290 USE_LIBPCRE2=YesPlease
5b2d1314 291 LIBPCREDIR=$withval
3a34c2bf 292 AC_MSG_NOTICE([Setting LIBPCREDIR to $LIBPCREDIR])
94da9193 293 dnl USE_LIBPCRE2 can still be modified below, so don't substitute
40bfbde9 294 dnl it yet.
3a34c2bf 295 GIT_CONF_SUBST([LIBPCREDIR])
5b2d1314 296 fi)
a119f91e 297#
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298# Define HAVE_ALLOCA_H if you have working alloca(3) defined in that header.
299AC_FUNC_ALLOCA
300case $ac_cv_working_alloca_h in
301 yes) HAVE_ALLOCA_H=YesPlease;;
302 *) HAVE_ALLOCA_H='';;
303esac
304GIT_CONF_SUBST([HAVE_ALLOCA_H])
305#
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306# Define NO_CURL if you do not have curl installed. git-http-pull and
307# git-http-push are not built, and you cannot use http:// and https://
308# transports.
309#
310# Define CURLDIR=/foo/bar if your curl header and library files are in
311# /foo/bar/include and /foo/bar/lib directories.
312AC_ARG_WITH(curl,
313AS_HELP_STRING([--with-curl],[support http(s):// transports (default is YES)])
314AS_HELP_STRING([], [ARG can be also prefix for curl library and headers]),
315GIT_PARSE_WITH(curl))
316#
317# Define NO_EXPAT if you do not have expat installed. git-http-push is
318# not built, and you cannot push using http:// and https:// transports.
319#
320# Define EXPATDIR=/foo/bar if your expat header and library files are in
321# /foo/bar/include and /foo/bar/lib directories.
322AC_ARG_WITH(expat,
323AS_HELP_STRING([--with-expat],
324[support git-push using http:// and https:// transports via WebDAV (default is YES)])
325AS_HELP_STRING([], [ARG can be also prefix for expat library and headers]),
326GIT_PARSE_WITH(expat))
327#
328# Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
329# installed in /sw, but don't want GIT to link against any libraries
330# installed there. If defined you may specify your own (or Fink's)
331# include directories and library directories by defining CFLAGS
332# and LDFLAGS appropriately.
333#
334# Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
335# have DarwinPorts installed in /opt/local, but don't want GIT to
336# link against any libraries installed there. If defined you may
337# specify your own (or DarwinPort's) include directories and
338# library directories by defining CFLAGS and LDFLAGS appropriately.
339#
340# Define NO_MMAP if you want to avoid mmap.
341#
342# Define NO_ICONV if your libc does not properly support iconv.
343AC_ARG_WITH(iconv,
344AS_HELP_STRING([--without-iconv],
345[if your architecture doesn't properly support iconv])
346AS_HELP_STRING([--with-iconv=PATH],
347[PATH is prefix for libiconv library and headers])
348AS_HELP_STRING([],
349[used only if you need linking with libiconv]),
350GIT_PARSE_WITH(iconv))
351
352## --enable-FEATURE[=ARG] and --disable-FEATURE
353#
354# Define USE_NSEC below if you want git to care about sub-second file mtimes
355# and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
356# it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
357# randomly break unless your underlying filesystem supports those sub-second
358# times (my ext3 doesn't).
359#
360# Define USE_STDEV below if you want git to care about the underlying device
361# change being considered an inode change from the update-index perspective.
362
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BW
363#
364# Allow user to set ETC_GITCONFIG variable
365GIT_PARSE_WITH_SET_MAKE_VAR(gitconfig, ETC_GITCONFIG,
366 Use VALUE instead of /etc/gitconfig as the
367 global git configuration file.
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368 If VALUE is not fully qualified it will be interpreted
369 as a path relative to the computed prefix at runtime.)
370
371#
372# Allow user to set ETC_GITATTRIBUTES variable
373GIT_PARSE_WITH_SET_MAKE_VAR(gitattributes, ETC_GITATTRIBUTES,
374 Use VALUE instead of /etc/gitattributes as the
375 global git attributes file.
376 If VALUE is not fully qualified it will be interpreted
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BW
377 as a path relative to the computed prefix at runtime.)
378
379#
380# Allow user to set the default pager
381GIT_PARSE_WITH_SET_MAKE_VAR(pager, DEFAULT_PAGER,
382 Use VALUE as the fall-back pager instead of 'less'.
383 This is used by things like 'git log' when the user
384 does not specify a pager to use through alternate
385 methods. eg: /usr/bin/pager)
386#
387# Allow user to set the default editor
388GIT_PARSE_WITH_SET_MAKE_VAR(editor, DEFAULT_EDITOR,
389 Use VALUE as the fall-back editor instead of 'vi'.
390 This is used by things like 'git commit' when the user
391 does not specify a preferred editor through other
392 methods. eg: /usr/bin/editor)
393
10861bea 394#
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395# Define SHELL_PATH to provide path to shell.
396GIT_ARG_SET_PATH(shell)
397#
398# Define PERL_PATH to provide path to Perl.
399GIT_ARG_SET_PATH(perl)
400#
d4e1b47a 401# Define PYTHON_PATH to provide path to Python.
dc78250f 402GIT_ARG_SET_PATH(python, allow-without)
d4e1b47a 403#
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404# Define ZLIB_PATH to provide path to zlib.
405GIT_ARG_SET_PATH(zlib)
406#
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407# Declare the with-tcltk/without-tcltk options.
408AC_ARG_WITH(tcltk,
409AS_HELP_STRING([--with-tcltk],[use Tcl/Tk GUI (default is YES)])
410AS_HELP_STRING([],[ARG is the full path to the Tcl/Tk interpreter.])
411AS_HELP_STRING([],[Bare --with-tcltk will make the GUI part only if])
5b2d1314 412AS_HELP_STRING([],[Tcl/Tk interpreter will be found in a system.]),
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413GIT_PARSE_WITH(tcltk))
414#
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415
416
633b4239 417## Checks for programs.
fd22c027 418AC_MSG_NOTICE([CHECKS for programs])
f6719572 419#
60a144f2 420AC_PROG_CC([cc gcc])
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421AC_C_INLINE
422case $ac_cv_c_inline in
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423 inline | yes | no) INLINE='';;
424 *) INLINE=$ac_cv_c_inline ;;
f9f33cdc 425esac
40bfbde9 426GIT_CONF_SUBST([INLINE])
f9f33cdc 427
798a9450 428# which switch to pass runtime path to dynamic libraries to the linker
a1a587ef 429AC_CACHE_CHECK([if linker supports -R], git_cv_ld_dashr, [
798a9450
GF
430 SAVE_LDFLAGS="${LDFLAGS}"
431 LDFLAGS="${SAVE_LDFLAGS} -R /"
1e58dba1 432 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_dashr=yes], [git_cv_ld_dashr=no])
798a9450
GF
433 LDFLAGS="${SAVE_LDFLAGS}"
434])
a1a587ef 435if test "$git_cv_ld_dashr" = "yes"; then
40bfbde9 436 CC_LD_DYNPATH=-R
798a9450 437else
a1a587ef 438 AC_CACHE_CHECK([if linker supports -Wl,-rpath,], git_cv_ld_wl_rpath, [
798a9450
GF
439 SAVE_LDFLAGS="${LDFLAGS}"
440 LDFLAGS="${SAVE_LDFLAGS} -Wl,-rpath,/"
1e58dba1 441 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_rpath=yes], [git_cv_ld_wl_rpath=no])
50a4b352 442 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 443 ])
a1a587ef 444 if test "$git_cv_ld_wl_rpath" = "yes"; then
9979a507 445 CC_LD_DYNPATH=-Wl,-rpath,
798a9450 446 else
a1a587ef 447 AC_CACHE_CHECK([if linker supports -rpath], git_cv_ld_rpath, [
798a9450
GF
448 SAVE_LDFLAGS="${LDFLAGS}"
449 LDFLAGS="${SAVE_LDFLAGS} -rpath /"
1e58dba1 450 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_rpath=yes], [git_cv_ld_rpath=no])
50a4b352 451 LDFLAGS="${SAVE_LDFLAGS}"
798a9450 452 ])
a1a587ef 453 if test "$git_cv_ld_rpath" = "yes"; then
40bfbde9 454 CC_LD_DYNPATH=-rpath
798a9450 455 else
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456 AC_CACHE_CHECK([if linker supports -Wl,+b,], git_cv_ld_wl_b, [
457 SAVE_LDFLAGS="${LDFLAGS}"
458 LDFLAGS="${SAVE_LDFLAGS} -Wl,+b,/"
459 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_b=yes], [git_cv_ld_wl_b=no])
460 LDFLAGS="${SAVE_LDFLAGS}"
461 ])
462 if test "$git_cv_ld_wl_b" = "yes"; then
463 CC_LD_DYNPATH=-Wl,+b,
464 else
465 CC_LD_DYNPATH=
466 AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
467 fi
798a9450
GF
468 fi
469 fi
470fi
40bfbde9 471GIT_CONF_SUBST([CC_LD_DYNPATH])
fd22c027 472#AC_PROG_INSTALL # needs install-sh or install.sh in sources
96e24abc 473AC_CHECK_TOOLS(AR, [gar ar], :)
fd22c027 474AC_CHECK_PROGS(TAR, [gtar tar])
d1b1a919 475AC_CHECK_PROGS(DIFF, [gnudiff gdiff diff])
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ER
476# TCLTK_PATH will be set to some value if we want Tcl/Tk
477# or will be empty otherwise.
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478if test -n "$NO_TCLTK"; then
479 TCLTK_PATH=
480else
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ER
481 if test "$with_tcltk" = ""; then
482 # No Tcl/Tk switches given. Do not check for Tcl/Tk, use bare 'wish'.
483 TCLTK_PATH=wish
81b63c70
ER
484 elif test "$with_tcltk" = "yes"; then
485 # Tcl/Tk check requested.
486 AC_CHECK_PROGS(TCLTK_PATH, [wish], )
68daee08 487 else
81b63c70
ER
488 AC_MSG_RESULT([Using Tcl/Tk interpreter $with_tcltk])
489 TCLTK_PATH="$with_tcltk"
81b63c70
ER
490 fi
491fi
40bfbde9 492GIT_CONF_SUBST([TCLTK_PATH])
923db42e
JN
493AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
494if test -n "$ASCIIDOC"; then
495 AC_MSG_CHECKING([for asciidoc version])
29adc8ba 496 asciidoc_version=`$ASCIIDOC --version 2>/dev/null`
923db42e 497 case "${asciidoc_version}" in
79c461d5 498 asciidoc' '8*)
923db42e
JN
499 AC_MSG_RESULT([${asciidoc_version}])
500 ;;
501 *)
923db42e
JN
502 AC_MSG_RESULT([${asciidoc_version} (unknown)])
503 ;;
504 esac
505fi
923db42e 506
633b4239 507## Checks for libraries.
ebdf5321 508AC_MSG_NOTICE([CHECKS for libraries])
f6719572 509#
633b4239 510# Define NO_OPENSSL environment variable if you do not have OpenSSL.
ebdf5321 511# Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
310386f0
BW
512
513GIT_STASH_FLAGS($OPENSSLDIR)
514
d5c31a1c 515AC_CHECK_LIB([crypto], [SHA1_Init],
424adc50 516[NEEDS_SSL_WITH_CRYPTO=],
3068f6c4 517[AC_CHECK_LIB([ssl], [SHA1_Init],
40bfbde9
SL
518 [NEEDS_SSL_WITH_CRYPTO=YesPlease NO_OPENSSL=],
519 [NEEDS_SSL_WITH_CRYPTO= NO_OPENSSL=YesPlease])])
310386f0
BW
520
521GIT_UNSTASH_FLAGS($OPENSSLDIR)
522
40bfbde9
SL
523GIT_CONF_SUBST([NEEDS_SSL_WITH_CRYPTO])
524GIT_CONF_SUBST([NO_OPENSSL])
310386f0 525
a119f91e 526#
7599730b 527# Handle the USE_LIBPCRE options potentially set above.
a119f91e
MK
528#
529
94da9193
ÆAB
530if test -n "$USE_LIBPCRE2"; then
531
532GIT_STASH_FLAGS($LIBPCREDIR)
533
534AC_CHECK_LIB([pcre2-8], [pcre2_config_8],
535[USE_LIBPCRE2=YesPlease],
536[USE_LIBPCRE2=])
537
538GIT_UNSTASH_FLAGS($LIBPCREDIR)
539
540GIT_CONF_SUBST([USE_LIBPCRE2])
a119f91e
MK
541
542fi
543
f6719572 544#
8da1e212 545# Define NO_CURL if you do not have libcurl installed. git-http-pull and
633b4239
JN
546# git-http-push are not built, and you cannot use http:// and https://
547# transports.
310386f0
BW
548
549GIT_STASH_FLAGS($CURLDIR)
550
d5c31a1c 551AC_CHECK_LIB([curl], [curl_global_init],
424adc50
JN
552[NO_CURL=],
553[NO_CURL=YesPlease])
310386f0
BW
554
555GIT_UNSTASH_FLAGS($CURLDIR)
556
40bfbde9 557GIT_CONF_SUBST([NO_CURL])
310386f0 558
f8915876
RP
559if test -z "$NO_CURL"; then
560
561AC_CHECK_PROG([CURL_CONFIG], [curl-config],
562[curl-config],
563[no])
564
565if test $CURL_CONFIG != no; then
566 GIT_CONF_SUBST([CURL_CONFIG])
23c4bbe2
JK
567
568 if test -z "$CURL_CONFIG_OPTS"; then
569 CURL_CONFIG_OPTS="--libs"
924b7eb1 570 fi
23c4bbe2
JK
571
572 CURL_LDFLAGS=$($CURL_CONFIG $CURL_CONFIG_OPTS)
573 AC_MSG_NOTICE([Setting CURL_LDFLAGS to '$CURL_LDFLAGS'])
574 GIT_CONF_SUBST([CURL_LDFLAGS], [$CURL_LDFLAGS])
f8915876
RP
575fi
576
577fi
578
579
f6719572 580#
633b4239
JN
581# Define NO_EXPAT if you do not have expat installed. git-http-push is
582# not built, and you cannot push using http:// and https:// transports.
310386f0
BW
583
584GIT_STASH_FLAGS($EXPATDIR)
585
d5c31a1c 586AC_CHECK_LIB([expat], [XML_ParserCreate],
424adc50
JN
587[NO_EXPAT=],
588[NO_EXPAT=YesPlease])
310386f0
BW
589
590GIT_UNSTASH_FLAGS($EXPATDIR)
591
40bfbde9 592GIT_CONF_SUBST([NO_EXPAT])
310386f0 593
f6719572 594#
e63ccb84
FK
595# Define NEEDS_LIBICONV if linking with libc is not enough (Darwin and
596# some Solaris installations).
6ff88de7 597# Define NO_ICONV if neither libc nor libiconv support iconv.
310386f0 598
934f82a7
MN
599if test -z "$NO_ICONV"; then
600
310386f0
BW
601GIT_STASH_FLAGS($ICONVDIR)
602
1e58dba1
RW
603AC_DEFUN([ICONVTEST_SRC],
604[AC_LANG_PROGRAM([#include <iconv.h>],
605 [iconv_open("", "");])])
a8304f7a
BW
606
607if test -n "$ICONVDIR"; then
608 lib_order="-liconv -lc"
609else
610 lib_order="-lc -liconv"
611fi
612
613NO_ICONV=YesPlease
614
615for l in $lib_order; do
616 if test "$l" = "-liconv"; then
617 NEEDS_LIBICONV=YesPlease
618 else
619 NEEDS_LIBICONV=
620 fi
621
622 old_LIBS="$LIBS"
623 LIBS="$LIBS $l"
624 AC_MSG_CHECKING([for iconv in $l])
1e58dba1 625 AC_LINK_IFELSE([ICONVTEST_SRC],
e63ccb84 626 [AC_MSG_RESULT([yes])
a8304f7a
BW
627 NO_ICONV=
628 break],
629 [AC_MSG_RESULT([no])])
630 LIBS="$old_LIBS"
631done
632
633#in case of break
634LIBS="$old_LIBS"
310386f0
BW
635
636GIT_UNSTASH_FLAGS($ICONVDIR)
637
40bfbde9
SL
638GIT_CONF_SUBST([NEEDS_LIBICONV])
639GIT_CONF_SUBST([NO_ICONV])
310386f0 640
934f82a7
MN
641if test -n "$NO_ICONV"; then
642 NEEDS_LIBICONV=
643fi
644
645fi
646
f6719572 647#
609a2289 648# Define NO_DEFLATE_BOUND if deflateBound is missing from zlib.
310386f0
BW
649
650GIT_STASH_FLAGS($ZLIB_PATH)
651
609a2289 652AC_DEFUN([ZLIBTEST_SRC], [
1e58dba1
RW
653AC_LANG_PROGRAM([#include <zlib.h>],
654 [deflateBound(0, 0);])])
609a2289
DS
655AC_MSG_CHECKING([for deflateBound in -lz])
656old_LIBS="$LIBS"
657LIBS="$LIBS -lz"
1e58dba1 658AC_LINK_IFELSE([ZLIBTEST_SRC],
609a2289
DS
659 [AC_MSG_RESULT([yes])],
660 [AC_MSG_RESULT([no])
661 NO_DEFLATE_BOUND=yes])
662LIBS="$old_LIBS"
310386f0
BW
663
664GIT_UNSTASH_FLAGS($ZLIB_PATH)
665
40bfbde9 666GIT_CONF_SUBST([NO_DEFLATE_BOUND])
310386f0 667
609a2289 668#
633b4239
JN
669# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
670# Patrick Mauritz).
d5c31a1c 671AC_CHECK_LIB([c], [socket],
424adc50
JN
672[NEEDS_SOCKET=],
673[NEEDS_SOCKET=YesPlease])
40bfbde9 674GIT_CONF_SUBST([NEEDS_SOCKET])
d1b9944d 675test -n "$NEEDS_SOCKET" && LIBS="$LIBS -lsocket"
633b4239 676
8fccb009 677#
5a857c74
GV
678# The next few tests will define NEEDS_RESOLV if linking with
679# libresolv provides some of the functions we would normally get
680# from libc.
681NEEDS_RESOLV=
5a857c74
GV
682#
683# Define NO_INET_NTOP if linking with -lresolv is not enough.
684# Solaris 2.7 in particular hos inet_ntop in -lresolv.
685NO_INET_NTOP=
5a857c74 686AC_CHECK_FUNC([inet_ntop],
40bfbde9 687 [],
5a857c74 688 [AC_CHECK_LIB([resolv], [inet_ntop],
40bfbde9 689 [NEEDS_RESOLV=YesPlease],
5a857c74
GV
690 [NO_INET_NTOP=YesPlease])
691])
40bfbde9 692GIT_CONF_SUBST([NO_INET_NTOP])
5a857c74
GV
693#
694# Define NO_INET_PTON if linking with -lresolv is not enough.
695# Solaris 2.7 in particular hos inet_pton in -lresolv.
696NO_INET_PTON=
5a857c74 697AC_CHECK_FUNC([inet_pton],
40bfbde9 698 [],
5a857c74 699 [AC_CHECK_LIB([resolv], [inet_pton],
40bfbde9 700 [NEEDS_RESOLV=YesPlease],
5a857c74
GV
701 [NO_INET_PTON=YesPlease])
702])
40bfbde9 703GIT_CONF_SUBST([NO_INET_PTON])
0a9b167e
GV
704#
705# Define NO_HSTRERROR if linking with -lresolv is not enough.
706# Solaris 2.6 in particular has no hstrerror, even in -lresolv.
707NO_HSTRERROR=
708AC_CHECK_FUNC([hstrerror],
40bfbde9 709 [],
0a9b167e 710 [AC_CHECK_LIB([resolv], [hstrerror],
40bfbde9 711 [NEEDS_RESOLV=YesPlease],
0a9b167e
GV
712 [NO_HSTRERROR=YesPlease])
713])
40bfbde9
SL
714GIT_CONF_SUBST([NO_HSTRERROR])
715
716dnl This must go after all the possible places for its initialization,
717dnl in the AC_CHECK_FUNC invocations above.
718GIT_CONF_SUBST([NEEDS_RESOLV])
5a857c74
GV
719#
720# If any of the above tests determined that -lresolv is needed at
721# build-time, also set it here for remaining configure-time checks.
8fccb009 722test -n "$NEEDS_RESOLV" && LIBS="$LIBS -lresolv"
633b4239 723
a1142892 724AC_CHECK_LIB([c], [basename],
ecc395c1
BC
725[NEEDS_LIBGEN=],
726[NEEDS_LIBGEN=YesPlease])
40bfbde9 727GIT_CONF_SUBST([NEEDS_LIBGEN])
ecc395c1
BC
728test -n "$NEEDS_LIBGEN" && LIBS="$LIBS -lgen"
729
b71e56a6
VK
730AC_DEFUN([LIBINTL_SRC], [
731AC_LANG_PROGRAM([[
732#include <libintl.h>
733]],[[
734char *msg = gettext("test");
735]])])
736
737AC_MSG_CHECKING([if libc contains libintl])
738AC_LINK_IFELSE([LIBINTL_SRC],
739 [AC_MSG_RESULT([yes])
740 LIBC_CONTAINS_LIBINTL=YesPlease],
741 [AC_MSG_RESULT([no])
742 LIBC_CONTAINS_LIBINTL=])
40bfbde9 743GIT_CONF_SUBST([LIBC_CONTAINS_LIBINTL])
a8356d43
JS
744
745#
746# Define NO_GETTEXT if you don't want Git output to be translated.
747# A translated Git requires GNU libintl or another gettext implementation
748AC_CHECK_HEADER([libintl.h],
749[NO_GETTEXT=],
750[NO_GETTEXT=YesPlease])
40bfbde9 751GIT_CONF_SUBST([NO_GETTEXT])
a8356d43
JS
752
753if test -z "$NO_GETTEXT"; then
754 test -n "$LIBC_CONTAINS_LIBINTL" || LIBS="$LIBS -lintl"
755fi
5e9637c6 756
633b4239 757## Checks for header files.
0f7a9c9b
JN
758AC_MSG_NOTICE([CHECKS for header files])
759#
3cf32374
JN
760# Define NO_SYS_SELECT_H if you don't have sys/select.h.
761AC_CHECK_HEADER([sys/select.h],
762[NO_SYS_SELECT_H=],
763[NO_SYS_SELECT_H=UnfortunatelyYes])
40bfbde9 764GIT_CONF_SUBST([NO_SYS_SELECT_H])
3cf32374 765#
2648ccc2
ĐTCD
766# Define NO_POLL_H if you don't have poll.h
767AC_CHECK_HEADER([poll.h],
768[NO_POLL_H=],
769[NO_POLL_H=UnfortunatelyYes])
770GIT_CONF_SUBST([NO_POLL_H])
771#
25fe66f8
MD
772# Define NO_SYS_POLL_H if you don't have sys/poll.h
773AC_CHECK_HEADER([sys/poll.h],
774[NO_SYS_POLL_H=],
775[NO_SYS_POLL_H=UnfortunatelyYes])
40bfbde9 776GIT_CONF_SUBST([NO_SYS_POLL_H])
25fe66f8
MD
777#
778# Define NO_INTTYPES_H if you don't have inttypes.h
779AC_CHECK_HEADER([inttypes.h],
780[NO_INTTYPES_H=],
781[NO_INTTYPES_H=UnfortunatelyYes])
40bfbde9 782GIT_CONF_SUBST([NO_INTTYPES_H])
25fe66f8 783#
0f7a9c9b
JN
784# Define OLD_ICONV if your library has an old iconv(), where the second
785# (input buffer pointer) parameter is declared with type (const char **).
1e58dba1
RW
786AC_DEFUN([OLDICONVTEST_SRC], [
787AC_LANG_PROGRAM([[
0f7a9c9b
JN
788#include <iconv.h>
789
790extern size_t iconv(iconv_t cd,
791 char **inbuf, size_t *inbytesleft,
792 char **outbuf, size_t *outbytesleft);
1e58dba1 793]], [])])
a8304f7a
BW
794
795GIT_STASH_FLAGS($ICONVDIR)
796
0f7a9c9b 797AC_MSG_CHECKING([for old iconv()])
1e58dba1 798AC_COMPILE_IFELSE([OLDICONVTEST_SRC],
0f7a9c9b
JN
799 [AC_MSG_RESULT([no])],
800 [AC_MSG_RESULT([yes])
1ba6e7ae 801 AC_DEFINE(HAVE_OLD_ICONV, 1)
0f7a9c9b 802 OLD_ICONV=UnfortunatelyYes])
633b4239 803
a8304f7a
BW
804GIT_UNSTASH_FLAGS($ICONVDIR)
805
40bfbde9 806GIT_CONF_SUBST([OLD_ICONV])
633b4239 807
1ba6e7ae
ĐTCD
808#
809# Define ICONV_OMITS_BOM if you are on a system which
810# iconv omits bom for utf-{16,32}
811if test -z "$NO_ICONV"; then
812AC_CACHE_CHECK([whether iconv omits bom for utf-16 and utf-32],
813 [ac_cv_iconv_omits_bom],
814[
815old_LIBS="$LIBS"
816if test -n "$NEEDS_LIBICONV"; then
817 LIBS="$LIBS -liconv"
818fi
819
820AC_RUN_IFELSE(
821 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
822 #include <iconv.h>
823 #ifdef HAVE_OLD_ICONV
824 typedef const char *iconv_ibp;
825 #else
826 typedef char *iconv_ibp;
827 #endif
828 ],
829 [[
830 int v;
831 iconv_t conv;
832 char in[] = "a"; iconv_ibp pin = in;
833 char out[20] = ""; char *pout = out;
834 size_t isz = sizeof in;
835 size_t osz = sizeof out;
836
837 conv = iconv_open("UTF-16", "UTF-8");
838 iconv(conv, &pin, &isz, &pout, &osz);
839 iconv_close(conv);
840 v = (unsigned char)(out[0]) + (unsigned char)(out[1]);
841 return v != 0xfe + 0xff;
842 ]])],
843 [ac_cv_iconv_omits_bom=no],
844 [ac_cv_iconv_omits_bom=yes])
845
846LIBS="$old_LIBS"
847])
848if test "x$ac_cv_iconv_omits_bom" = xyes; then
849 ICONV_OMITS_BOM=Yes
850else
851 ICONV_OMITS_BOM=
852fi
853GIT_CONF_SUBST([ICONV_OMITS_BOM])
854fi
855
633b4239 856## Checks for typedefs, structures, and compiler characteristics.
eb0f255d 857AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
f6719572 858#
e88a135b
GV
859TYPE_SOCKLEN_T
860case $ac_cv_type_socklen_t in
40bfbde9
SL
861 yes) SOCKLEN_T='';;
862 *) SOCKLEN_T=$git_cv_socklen_t_equiv;;
e88a135b 863esac
40bfbde9 864GIT_CONF_SUBST([SOCKLEN_T])
e88a135b 865
6441090c
JST
866#
867# Define NO_STRUCT_ITIMERVAL if you don't have struct itimerval.
868AC_CHECK_TYPES([struct itimerval],
869[NO_STRUCT_ITIMERVAL=],
870[NO_STRUCT_ITIMERVAL=UnfortunatelyYes],
871[#include <sys/time.h>])
872GIT_CONF_SUBST([NO_STRUCT_ITIMERVAL])
873#
8bd2c972
RH
874# Define USE_ST_TIMESPEC=YesPlease when stat.st_mtimespec.tv_nsec exists.
875# Define NO_NSEC=YesPlease when neither stat.st_mtim.tv_nsec nor
876# stat.st_mtimespec.tv_nsec exists.
877AC_CHECK_MEMBER([struct stat.st_mtimespec.tv_nsec])
878AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec])
879if test x$ac_cv_member_struct_stat_st_mtimespec_tv_nsec = xyes; then
880 USE_ST_TIMESPEC=YesPlease
881 GIT_CONF_SUBST([USE_ST_TIMESPEC])
882elif test x$ac_cv_member_struct_stat_st_mtim_tv_nsec != xyes; then
883 NO_NSEC=YesPlease
884 GIT_CONF_SUBST([NO_NSEC])
885fi
886#
633b4239
JN
887# Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
888# d_type in struct dirent (latest Cygwin -- will be fixed soonish).
d5c31a1c 889AC_CHECK_MEMBER(struct dirent.d_type,
424adc50
JN
890[NO_D_TYPE_IN_DIRENT=],
891[NO_D_TYPE_IN_DIRENT=YesPlease],
eb0f255d 892[#include <dirent.h>])
40bfbde9 893GIT_CONF_SUBST([NO_D_TYPE_IN_DIRENT])
f6719572 894#
110d6985
DM
895# Define NO_GECOS_IN_PWENT if you don't have pw_gecos in struct passwd
896# in the C library.
897AC_CHECK_MEMBER(struct passwd.pw_gecos,
898[NO_GECOS_IN_PWENT=],
899[NO_GECOS_IN_PWENT=YesPlease],
900[#include <pwd.h>])
901GIT_CONF_SUBST([NO_GECOS_IN_PWENT])
902#
633b4239
JN
903# Define NO_SOCKADDR_STORAGE if your platform does not have struct
904# sockaddr_storage.
d5c31a1c 905AC_CHECK_TYPE(struct sockaddr_storage,
424adc50 906[NO_SOCKADDR_STORAGE=],
ab5573ae
DS
907[NO_SOCKADDR_STORAGE=YesPlease],[
908#include <sys/types.h>
909#include <sys/socket.h>
910])
40bfbde9 911GIT_CONF_SUBST([NO_SOCKADDR_STORAGE])
424adc50 912#
8c6ab35e
JH
913# Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
914AC_CHECK_TYPE([struct addrinfo],[
1689c5de 915 GIT_CHECK_FUNC([getaddrinfo],
424adc50
JN
916 [NO_IPV6=],
917 [NO_IPV6=YesPlease])
918],[NO_IPV6=YesPlease],[
8c6ab35e
JH
919#include <sys/types.h>
920#include <sys/socket.h>
921#include <netdb.h>
922])
40bfbde9 923GIT_CONF_SUBST([NO_IPV6])
656517b9 924#
842a516c
JN
925# Define NO_REGEX if your C library lacks regex support with REG_STARTEND
926# feature.
927AC_CACHE_CHECK([whether the platform regex supports REG_STARTEND],
928 [ac_cv_c_regex_with_reg_startend], [
a1e3b669
JN
929AC_EGREP_CPP(yippeeyeswehaveit,
930 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
931#include <regex.h>
932],
933[#ifdef REG_STARTEND
934yippeeyeswehaveit
935#endif
936]),
842a516c
JN
937 [ac_cv_c_regex_with_reg_startend=yes],
938 [ac_cv_c_regex_with_reg_startend=no])
a1e3b669 939])
842a516c 940if test $ac_cv_c_regex_with_reg_startend = yes; then
a1e3b669
JN
941 NO_REGEX=
942else
943 NO_REGEX=YesPlease
944fi
40bfbde9 945GIT_CONF_SUBST([NO_REGEX])
a1e3b669 946#
8ce1f243
MR
947# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
948# when attempting to read from an fopen'ed directory.
949AC_CACHE_CHECK([whether system succeeds to read fopen'ed directory],
950 [ac_cv_fread_reads_directories],
951[
952AC_RUN_IFELSE(
953 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
3adf9fde 954 [[
8ce1f243 955 FILE *f = fopen(".", "r");
249482da 956 return f != NULL;]])],
8ce1f243
MR
957 [ac_cv_fread_reads_directories=no],
958 [ac_cv_fread_reads_directories=yes])
959])
960if test $ac_cv_fread_reads_directories = yes; then
961 FREAD_READS_DIRECTORIES=UnfortunatelyYes
962else
963 FREAD_READS_DIRECTORIES=
964fi
40bfbde9 965GIT_CONF_SUBST([FREAD_READS_DIRECTORIES])
8ce1f243 966#
c4582f93
MR
967# Define SNPRINTF_RETURNS_BOGUS if your are on a system which snprintf()
968# or vsnprintf() return -1 instead of number of characters which would
969# have been written to the final string if enough space had been available.
970AC_CACHE_CHECK([whether snprintf() and/or vsnprintf() return bogus value],
971 [ac_cv_snprintf_returns_bogus],
972[
973AC_RUN_IFELSE(
974 [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
975 #include "stdarg.h"
976
977 int test_vsnprintf(char *str, size_t maxsize, const char *format, ...)
978 {
979 int ret;
980 va_list ap;
981 va_start(ap, format);
982 ret = vsnprintf(str, maxsize, format, ap);
983 va_end(ap);
984 return ret;
985 }],
986 [[char buf[6];
987 if (test_vsnprintf(buf, 3, "%s", "12345") != 5
988 || strcmp(buf, "12")) return 1;
989 if (snprintf(buf, 3, "%s", "12345") != 5
990 || strcmp(buf, "12")) return 1]])],
991 [ac_cv_snprintf_returns_bogus=no],
992 [ac_cv_snprintf_returns_bogus=yes])
993])
994if test $ac_cv_snprintf_returns_bogus = yes; then
995 SNPRINTF_RETURNS_BOGUS=UnfortunatelyYes
996else
997 SNPRINTF_RETURNS_BOGUS=
998fi
40bfbde9 999GIT_CONF_SUBST([SNPRINTF_RETURNS_BOGUS])
d543d9c0
DM
1000#
1001# Define NEEDS_MODE_TRANSLATION if your OS strays from the typical file type
1002# bits in mode values.
1003AC_CACHE_CHECK([whether the platform uses typical file type bits],
1004 [ac_cv_sane_mode_bits], [
1005AC_EGREP_CPP(yippeeyeswehaveit,
1006 AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
1007[#if S_IFMT == 0170000 && \
1008 S_IFREG == 0100000 && S_IFDIR == 0040000 && S_IFLNK == 0120000 && \
1009 S_IFBLK == 0060000 && S_IFCHR == 0020000 && \
1010 S_IFIFO == 0010000 && S_IFSOCK == 0140000
1011yippeeyeswehaveit
1012#endif
1013]),
1014 [ac_cv_sane_mode_bits=yes],
1015 [ac_cv_sane_mode_bits=no])
1016])
1017if test $ac_cv_sane_mode_bits = yes; then
1018 NEEDS_MODE_TRANSLATION=
1019else
1020 NEEDS_MODE_TRANSLATION=UnfortunatelyYes
1021fi
1022GIT_CONF_SUBST([NEEDS_MODE_TRANSLATION])
633b4239 1023
a20b4d89 1024
633b4239 1025## Checks for library functions.
1bbbadbc
JN
1026## (in default C library and libraries checked by AC_CHECK_LIB)
1027AC_MSG_NOTICE([CHECKS for library functions])
f6719572 1028#
e1c06886
DA
1029# Define NO_LIBGEN_H if you don't have libgen.h.
1030AC_CHECK_HEADER([libgen.h],
1031[NO_LIBGEN_H=],
1032[NO_LIBGEN_H=YesPlease])
40bfbde9 1033GIT_CONF_SUBST([NO_LIBGEN_H])
e1c06886 1034#
bb15e382
JN
1035# Define HAVE_PATHS_H if you have paths.h.
1036AC_CHECK_HEADER([paths.h],
1037[HAVE_PATHS_H=YesPlease],
1038[HAVE_PATHS_H=])
40bfbde9 1039GIT_CONF_SUBST([HAVE_PATHS_H])
bb15e382 1040#
5e9637c6
ÆAB
1041# Define HAVE_LIBCHARSET_H if have libcharset.h
1042AC_CHECK_HEADER([libcharset.h],
1043[HAVE_LIBCHARSET_H=YesPlease],
1044[HAVE_LIBCHARSET_H=])
40bfbde9 1045GIT_CONF_SUBST([HAVE_LIBCHARSET_H])
b3e103da
DM
1046#
1047# Define HAVE_STRINGS_H if you have strings.h
1048AC_CHECK_HEADER([strings.h],
1049[HAVE_STRINGS_H=YesPlease],
1050[HAVE_STRINGS_H=])
1051GIT_CONF_SUBST([HAVE_STRINGS_H])
b5225286
ДП
1052# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
1053# and libcharset does
1054CHARSET_LIB=
1055AC_CHECK_LIB([iconv], [locale_charset],
62fb6d03 1056 [CHARSET_LIB=-liconv],
b5225286 1057 [AC_CHECK_LIB([charset], [locale_charset],
40bfbde9
SL
1058 [CHARSET_LIB=-lcharset])])
1059GIT_CONF_SUBST([CHARSET_LIB])
5e9637c6 1060#
a6c3c638
RH
1061# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
1062GIT_CHECK_FUNC(clock_gettime,
1063 [HAVE_CLOCK_GETTIME=YesPlease],
1064 [HAVE_CLOCK_GETTIME=])
1065GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
1066
1067AC_DEFUN([CLOCK_MONOTONIC_SRC], [
1068AC_LANG_PROGRAM([[
1069#include <time.h>
1070clockid_t id = CLOCK_MONOTONIC;
1071]])])
1072
1073#
1074# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
1075AC_MSG_CHECKING([for CLOCK_MONOTONIC])
1076AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
1077 [AC_MSG_RESULT([yes])
1078 HAVE_CLOCK_MONOTONIC=YesPlease],
1079 [AC_MSG_RESULT([no])
1080 HAVE_CLOCK_MONOTONIC=])
1081GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
abf38abe
NS
1082
1083#
1084# Define HAVE_SYNC_FILE_RANGE=YesPlease if sync_file_range is available.
1085GIT_CHECK_FUNC(sync_file_range,
1086 [HAVE_SYNC_FILE_RANGE=YesPlease],
2e375947 1087 [HAVE_SYNC_FILE_RANGE=])
abf38abe
NS
1088GIT_CONF_SUBST([HAVE_SYNC_FILE_RANGE])
1089
a6c3c638 1090#
a6fd4fb5
JST
1091# Define NO_SETITIMER if you don't have setitimer.
1092GIT_CHECK_FUNC(setitimer,
1093[NO_SETITIMER=],
1094[NO_SETITIMER=YesPlease])
1095GIT_CONF_SUBST([NO_SETITIMER])
1096#
633b4239 1097# Define NO_STRCASESTR if you don't have strcasestr.
1689c5de 1098GIT_CHECK_FUNC(strcasestr,
424adc50
JN
1099[NO_STRCASESTR=],
1100[NO_STRCASESTR=YesPlease])
40bfbde9 1101GIT_CONF_SUBST([NO_STRCASESTR])
f6719572 1102#
24397556 1103# Define NO_MEMMEM if you don't have memmem.
1689c5de 1104GIT_CHECK_FUNC(memmem,
24397556
JN
1105[NO_MEMMEM=],
1106[NO_MEMMEM=YesPlease])
40bfbde9 1107GIT_CONF_SUBST([NO_MEMMEM])
24397556 1108#
633b4239 1109# Define NO_STRLCPY if you don't have strlcpy.
1689c5de 1110GIT_CHECK_FUNC(strlcpy,
424adc50
JN
1111[NO_STRLCPY=],
1112[NO_STRLCPY=YesPlease])
40bfbde9 1113GIT_CONF_SUBST([NO_STRLCPY])
f6719572 1114#
0bc3e781
DS
1115# Define NO_UINTMAX_T if your platform does not have uintmax_t
1116AC_CHECK_TYPE(uintmax_t,
1117[NO_UINTMAX_T=],
1118[NO_UINTMAX_T=YesPlease],[
1119#include <inttypes.h>
1120])
40bfbde9 1121GIT_CONF_SUBST([NO_UINTMAX_T])
0bc3e781 1122#
24397556 1123# Define NO_STRTOUMAX if you don't have strtoumax in the C library.
1689c5de 1124GIT_CHECK_FUNC(strtoumax,
24397556
JN
1125[NO_STRTOUMAX=],
1126[NO_STRTOUMAX=YesPlease])
40bfbde9 1127GIT_CONF_SUBST([NO_STRTOUMAX])
24397556 1128#
633b4239 1129# Define NO_SETENV if you don't have setenv in the C library.
1689c5de 1130GIT_CHECK_FUNC(setenv,
424adc50
JN
1131[NO_SETENV=],
1132[NO_SETENV=YesPlease])
40bfbde9 1133GIT_CONF_SUBST([NO_SETENV])
f6719572 1134#
bfa8fccf 1135# Define NO_UNSETENV if you don't have unsetenv in the C library.
1689c5de 1136GIT_CHECK_FUNC(unsetenv,
bfa8fccf
JN
1137[NO_UNSETENV=],
1138[NO_UNSETENV=YesPlease])
40bfbde9 1139GIT_CONF_SUBST([NO_UNSETENV])
bfa8fccf 1140#
24397556 1141# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
1689c5de 1142GIT_CHECK_FUNC(mkdtemp,
24397556
JN
1143[NO_MKDTEMP=],
1144[NO_MKDTEMP=YesPlease])
40bfbde9 1145GIT_CONF_SUBST([NO_MKDTEMP])
24397556 1146#
25fe66f8
MD
1147# Define NO_INITGROUPS if you don't have initgroups in the C library.
1148GIT_CHECK_FUNC(initgroups,
1149[NO_INITGROUPS=],
1150[NO_INITGROUPS=YesPlease])
40bfbde9 1151GIT_CONF_SUBST([NO_INITGROUPS])
25fe66f8 1152#
96658060
ES
1153# Define HAVE_GETDELIM if you have getdelim in the C library.
1154GIT_CHECK_FUNC(getdelim,
1155[HAVE_GETDELIM=YesPlease],
1156[HAVE_GETDELIM=])
1157GIT_CONF_SUBST([HAVE_GETDELIM])
1158#
0620b39b 1159#
633b4239
JN
1160# Define NO_MMAP if you want to avoid mmap.
1161#
633b4239
JN
1162# Define NO_ICONV if your libc does not properly support iconv.
1163
9529080d
KM
1164AC_DEFUN([BSD_SYSCTL_SRC], [
1165AC_LANG_PROGRAM([[
1166#include <stddef.h>
1167#include <sys/types.h>
1168#include <sys/sysctl.h>
1169]],[[
1170int val, mib[2];
1171size_t len;
1172mib[0] = CTL_HW;
1173mib[1] = 1;
1174len = sizeof(val);
1175return sysctl(mib, 2, &val, &len, NULL, 0) ? 1 : 0;
1176]])])
1177
1178#
1179# Define HAVE_BSD_SYSCTL=YesPlease if a BSD-compatible sysctl function is available.
1180AC_MSG_CHECKING([for BSD sysctl])
1181AC_COMPILE_IFELSE([BSD_SYSCTL_SRC],
1182 [AC_MSG_RESULT([yes])
1183 HAVE_BSD_SYSCTL=YesPlease],
1184 [AC_MSG_RESULT([no])
1185 HAVE_BSD_SYSCTL=])
1186GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
633b4239
JN
1187
1188## Other checks.
633b4239
JN
1189# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
1190# Enable it on Windows. By default, symrefs are still used.
20f7a398 1191#
7eb151d6 1192# Define NO_PTHREADS if we do not have pthreads.
46059cc6 1193#
7eb151d6 1194# Define PTHREAD_LIBS to the linker flag used for Pthread support.
1973b0d7 1195AC_DEFUN([PTHREADTEST_SRC], [
1e58dba1 1196AC_LANG_PROGRAM([[
1973b0d7 1197#include <pthread.h>
a9b02de8 1198static void *noop(void *ignore) { return ignore; }
1e58dba1 1199]], [[
1973b0d7 1200 pthread_mutex_t test_mutex;
cea13a8d 1201 pthread_key_t test_key;
a9b02de8 1202 pthread_t th;
48793cf4 1203 int retcode = 0;
a9b02de8 1204 void *ret = (void *)0;
cea13a8d 1205 retcode |= pthread_key_create(&test_key, (void *)0);
48793cf4
GV
1206 retcode |= pthread_mutex_init(&test_mutex,(void *)0);
1207 retcode |= pthread_mutex_lock(&test_mutex);
1208 retcode |= pthread_mutex_unlock(&test_mutex);
a9b02de8
EW
1209 retcode |= pthread_create(&th, ret, noop, ret);
1210 retcode |= pthread_join(th, &ret);
48793cf4 1211 return retcode;
1e58dba1 1212]])])
1973b0d7
BW
1213
1214dnl AC_LANG_CONFTEST([AC_LANG_PROGRAM(
1215dnl [[#include <pthread.h>]],
1216dnl [[pthread_mutex_t test_mutex;]]
1217dnl )])
1218
1219NO_PTHREADS=UnfortunatelyYes
1973b0d7
BW
1220PTHREAD_LIBS=
1221
1222if test -n "$USER_NOPTHREAD"; then
1223 AC_MSG_NOTICE([Skipping POSIX Threads at user request.])
1224# handle these separately since PTHREAD_CFLAGS could be '-lpthreads
1225# -D_REENTRANT' or some such.
1226elif test -z "$PTHREAD_CFLAGS"; then
48793cf4 1227 threads_found=no
e0a52279
MH
1228 # Attempt to compile and link some code using pthreads to determine
1229 # required linker flags. The order is somewhat important here: We
1230 # first try it without any extra flags, to catch systems where
1231 # pthreads are part of the C library, then go on testing various other
1232 # flags. We do so to avoid false positives. For example, on Mac OS X
1233 # pthreads are part of the C library; moreover, the compiler allows us
1234 # to add "-mt" to the CFLAGS (although it will do nothing except
1235 # trigger a warning about an unused flag). Hence if we checked for
1236 # "-mt" before "" we would end up picking it. But unfortunately this
1237 # would then trigger compiler warnings on every single file we compile.
1238 for opt in "" -mt -pthread -lpthread; do
1973b0d7 1239 old_CFLAGS="$CFLAGS"
bac2c5bf
RC
1240 old_LIBS="$LIBS"
1241 case "$opt" in
1242 -l*) LIBS="$opt $LIBS" ;;
1243 *) CFLAGS="$opt $CFLAGS" ;;
1244 esac
1245
49aeead2 1246 AC_MSG_CHECKING([for POSIX Threads with '$opt'])
1e58dba1 1247 AC_LINK_IFELSE([PTHREADTEST_SRC],
1973b0d7
BW
1248 [AC_MSG_RESULT([yes])
1249 NO_PTHREADS=
1250 PTHREAD_LIBS="$opt"
48793cf4
GV
1251 PTHREAD_CFLAGS="$opt"
1252 threads_found=yes
1973b0d7
BW
1253 break
1254 ],
1255 [AC_MSG_RESULT([no])])
1256 CFLAGS="$old_CFLAGS"
bac2c5bf 1257 LIBS="$old_LIBS"
1973b0d7 1258 done
48793cf4
GV
1259 if test $threads_found != yes; then
1260 AC_CHECK_LIB([pthread], [pthread_create],
1261 [PTHREAD_LIBS="-lpthread"],
1262 [NO_PTHREADS=UnfortunatelyYes])
1263 fi
20f7a398 1264else
1973b0d7
BW
1265 old_CFLAGS="$CFLAGS"
1266 CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
49aeead2 1267 AC_MSG_CHECKING([for POSIX Threads with '$PTHREAD_CFLAGS'])
1e58dba1 1268 AC_LINK_IFELSE([PTHREADTEST_SRC],
1973b0d7
BW
1269 [AC_MSG_RESULT([yes])
1270 NO_PTHREADS=
1271 PTHREAD_LIBS="$PTHREAD_CFLAGS"
1973b0d7
BW
1272 ],
1273 [AC_MSG_RESULT([no])])
1274
1275 CFLAGS="$old_CFLAGS"
20f7a398 1276fi
1973b0d7
BW
1277
1278CFLAGS="$old_CFLAGS"
1279
40bfbde9
SL
1280GIT_CONF_SUBST([PTHREAD_CFLAGS])
1281GIT_CONF_SUBST([PTHREAD_LIBS])
1282GIT_CONF_SUBST([NO_PTHREADS])
633b4239 1283
633b4239 1284## Output files
ac5fc1c5 1285AC_CONFIG_FILES(["${config_file}":"${config_in}"])
55667714 1286AC_OUTPUT