configure.ac

   1 #                                               -*- Autoconf -*-
   2 # Process this file with autoconf to produce a configure script.
   3
   4 AC_PREREQ(2.59)
   5 AC_INIT([git], [@@GIT_VERSION@@], [git@vger.kernel.org])
   6
   7 AC_CONFIG_SRCDIR([git.c])
   8
   9 config_file=config.mak.autogen
  10 config_append=config.mak.append
  11 config_in=config.mak.in
  12
  13 echo "# ${config_append}.  Generated by configure." > "${config_append}"
  14
  15
  16 ## Definitions of macros
  17 # GIT_CONF_APPEND_LINE(LINE)
  18 # --------------------------
  19 # Append LINE to file ${config_append}
  20 AC_DEFUN([GIT_CONF_APPEND_LINE],
  21 [echo "$1" >> "${config_append}"])# GIT_CONF_APPEND_LINE
  22 #
  23 # GIT_ARG_SET_PATH(PROGRAM)
  24 # -------------------------
  25 # Provide --with-PROGRAM=PATH option to set PATH to PROGRAM
  26 AC_DEFUN([GIT_ARG_SET_PATH],
  27 [AC_ARG_WITH([$1],
  28  [AS_HELP_STRING([--with-$1=PATH],
  29                  [provide PATH to $1])],
  30  [GIT_CONF_APPEND_PATH($1)],[])
  31 ])# GIT_ARG_SET_PATH
  32 #
  33 # GIT_CONF_APPEND_PATH(PROGRAM)
  34 # ------------------------------
  35 # Parse --with-PROGRAM=PATH option to set PROGRAM_PATH=PATH
  36 # Used by GIT_ARG_SET_PATH(PROGRAM)
  37 AC_DEFUN([GIT_CONF_APPEND_PATH],
  38 [PROGRAM=m4_toupper($1); \
  39 if test "$withval" = "no"; then \
  40         AC_MSG_WARN([You cannot use git without $1]); \
  41 else \
  42         if test "$withval" = "yes"; then \
  43                 AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
  44         else \
  45                 GIT_CONF_APPEND_LINE(${PROGRAM}_PATH=$withval); \
  46         fi; \
  47 fi; \
  48 ]) # GIT_CONF_APPEND_PATH
  49
  50
  51 ## Site configuration
  52 ## --with-PACKAGE[=ARG] and --without-PACKAGE
  53 #
  54 # Define NO_SVN_TESTS if you want to skip time-consuming SVN interoperability
  55 # tests.  These tests take up a significant amount of the total test time
  56 # but are not needed unless you plan to talk to SVN repos.
  57 #
  58 # Define MOZILLA_SHA1 environment variable when running make to make use of
  59 # a bundled SHA1 routine coming from Mozilla. It is GPL'd and should be fast
  60 # on non-x86 architectures (e.g. PowerPC), while the OpenSSL version (default
  61 # choice) has very fast version optimized for i586.
  62 #
  63 # Define PPC_SHA1 environment variable when running make to make use of
  64 # a bundled SHA1 routine optimized for PowerPC.
  65 #
  66 # Define ARM_SHA1 environment variable when running make to make use of
  67 # a bundled SHA1 routine optimized for ARM.
  68 #
  69 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
  70 # This also implies MOZILLA_SHA1.
  71 #
  72 # Define NO_CURL if you do not have curl installed.  git-http-pull and
  73 # git-http-push are not built, and you cannot use http:// and https://
  74 # transports.
  75 #
  76 # Define CURLDIR=/foo/bar if your curl header and library files are in
  77 # /foo/bar/include and /foo/bar/lib directories.
  78 #
  79 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
  80 # not built, and you cannot push using http:// and https:// transports.
  81 #
  82 # Define NO_FINK if you are building on Darwin/Mac OS X, have Fink
  83 # installed in /sw, but don't want GIT to link against any libraries
  84 # installed there.  If defined you may specify your own (or Fink's)
  85 # include directories and library directories by defining CFLAGS
  86 # and LDFLAGS appropriately.
  87 #
  88 # Define NO_DARWIN_PORTS if you are building on Darwin/Mac OS X,
  89 # have DarwinPorts installed in /opt/local, but don't want GIT to
  90 # link against any libraries installed there.  If defined you may
  91 # specify your own (or DarwinPort's) include directories and
  92 # library directories by defining CFLAGS and LDFLAGS appropriately.
  93 #
  94 # Define NO_MMAP if you want to avoid mmap.
  95 #
  96 # Define SHELL_PATH to provide path to shell.
  97 GIT_ARG_SET_PATH(shell)
  98 #
  99 # Define PERL_PATH to provide path to Perl.
 100 GIT_ARG_SET_PATH(perl)
 101 #
 102 # Define NO_PYTHON if you want to lose all benefits of the recursive merge.
 103 # Define PYTHON_PATH to provide path to Python.
 104 AC_ARG_WITH(python,[AS_HELP_STRING([--with-python=PATH], [provide PATH to python])
 105 AS_HELP_STRING([--no-python], [don't use python scripts])],
 106  [if test "$withval" = "no"; then \
 107     NO_PYTHON=YesPlease; \
 108   elif test "$withval" != "yes"; then \
 109     PYTHON_PATH=$withval; \
 110   fi; \
 111  ])
 112 AC_SUBST(NO_PYTHON)
 113 AC_SUBST(PYTHON_PATH)
 114 #
 115 ## --enable-FEATURE[=ARG] and --disable-FEATURE
 116 # Define COLLISION_CHECK below if you believe that SHA1's
 117 # 1461501637330902918203684832716283019655932542976 hashes do not give you
 118 # sufficient guarantee that no collisions between objects will ever happen.
 119 #
 120 # Define USE_NSEC below if you want git to care about sub-second file mtimes
 121 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 122 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
 123 # randomly break unless your underlying filesystem supports those sub-second
 124 # times (my ext3 doesn't).
 125 #
 126 # Define USE_STDEV below if you want git to care about the underlying device
 127 # change being considered an inode change from the update-cache perspective.
 128
 129
 130 ## Checks for programs.
 131 AC_MSG_NOTICE([CHECKS for programs])
 132 #
 133 AC_PROG_CC
 134 #AC_PROG_INSTALL                # needs install-sh or install.sh in sources
 135 AC_CHECK_TOOL(AR, ar, :)
 136 AC_CHECK_PROGS(TAR, [gtar tar])
 137 #
 138 # Define NO_PYTHON if you want to lose all benefits of the recursive merge.
 139 # Define PYTHON_PATH to provide path to Python.
 140 if test -z "$NO_PYTHON"; then
 141         AC_PATH_PROGS(PYTHON_PATH, [python2.4 python2.3 python2 python])
 142         if test -n "$PYTHON_PATH"; then
 143                 GIT_CONF_APPEND_LINE([PYTHON_PATH=@PYTHON_PATH@])
 144         else
 145                 GIT_CONF_APPEND_LINE([NO_PYTHON=@NO_PYTHON@])
 146         fi
 147 else
 148         GIT_CONF_APPEND_LINE([NO_PYTHON=@NO_PYTHON@])
 149 fi
 150
 151
 152 ## Checks for libraries.
 153 AC_MSG_NOTICE([CHECKS for libraries])
 154 #
 155 # Define NO_OPENSSL environment variable if you do not have OpenSSL.
 156 # Define NEEDS_SSL_WITH_CRYPTO if you need -lcrypto with -lssl (Darwin).
 157 AC_CHECK_LIB([crypto], [SHA1_Init],
 158 [GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=)],
 159 [AC_CHECK_LIB([ssl], [SHA1_Init],
 160  [GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=YesPlease)
 161   GIT_CONF_APPEND_LINE(NEEDS_SSL_WITH_CRYPTO=)],
 162  [GIT_CONF_APPEND_LINE(NO_OPENSSL=YesPlease)])])
 163 #
 164 # Define NO_CURL if you do not have curl installed.  git-http-pull and
 165 # git-http-push are not built, and you cannot use http:// and https://
 166 # transports.
 167 AC_CHECK_LIB([curl], [curl_global_init],
 168 [GIT_CONF_APPEND_LINE(NO_CURL=)],
 169 [GIT_CONF_APPEND_LINE(NO_CURL=YesPlease)])
 170 #
 171 # Define NO_EXPAT if you do not have expat installed.  git-http-push is
 172 # not built, and you cannot push using http:// and https:// transports.
 173 AC_CHECK_LIB([expat], [XML_ParserCreate],
 174 [GIT_CONF_APPEND_LINE(NO_EXPAT=)],
 175 [GIT_CONF_APPEND_LINE(NO_EXPAT=YesPlease)])
 176 #
 177 # Define NEEDS_LIBICONV if linking with libc is not enough (Darwin).
 178 AC_CHECK_LIB([c], [iconv],
 179 [GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=)],
 180 [GIT_CONF_APPEND_LINE(NEEDS_LIBICONV=YesPlease)])
 181 #
 182 # Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
 183 # Patrick Mauritz).
 184 AC_CHECK_LIB([c], [socket],
 185 [GIT_CONF_APPEND_LINE(NEEDS_SOCKET=)],
 186 [GIT_CONF_APPEND_LINE(NEEDS_SOCKET=YesPlease)])
 187
 188
 189 ## Checks for header files.
 190
 191
 192 ## Checks for typedefs, structures, and compiler characteristics.
 193 AC_MSG_NOTICE([CHECKS for typedefs, structures, and compiler characteristics])
 194 #
 195 # Define NO_D_INO_IN_DIRENT if you don't have d_ino in your struct dirent.
 196 AC_CHECK_MEMBER(struct dirent.d_ino,
 197 [GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=)],
 198 [GIT_CONF_APPEND_LINE(NO_D_INO_IN_DIRENT=YesPlease)],
 199 [#include <dirent.h>])
 200 #
 201 # Define NO_D_TYPE_IN_DIRENT if your platform defines DT_UNKNOWN but lacks
 202 # d_type in struct dirent (latest Cygwin -- will be fixed soonish).
 203 AC_CHECK_MEMBER(struct dirent.d_type,
 204 [GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=)],
 205 [GIT_CONF_APPEND_LINE(NO_D_TYPE_IN_DIRENT=YesPlease)],
 206 [#include <dirent.h>])
 207 #
 208 # Define NO_SOCKADDR_STORAGE if your platform does not have struct
 209 # sockaddr_storage.
 210 AC_CHECK_TYPE(struct sockaddr_storage,
 211 [GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=)],
 212 [GIT_CONF_APPEND_LINE(NO_SOCKADDR_STORAGE=YesPlease)],
 213 [#include <netinet/in.h>])
 214 # Define NO_IPV6 if you lack IPv6 support and getaddrinfo().
 215 AC_CHECK_TYPE([struct addrinfo],[
 216  AC_CHECK_FUNC([getaddrinfo],
 217   [GIT_CONF_APPEND_LINE(NO_IPV6=)],
 218   [GIT_CONF_APPEND_LINE(NO_IPV6=YesPlease)])
 219 ],[GIT_CONF_APPEND_LINE(NO_IPV6=YesPlease)],[
 220 #include <sys/types.h>
 221 #include <sys/socket.h>
 222 #include <netdb.h>
 223 ])
 224 #
 225 # Define NO_C99_FORMAT if your formatted IO functions (printf/scanf et.al.)
 226 # do not support the 'size specifiers' introduced by C99, namely ll, hh,
 227 # j, z, t. (representing long long int, char, intmax_t, size_t, ptrdiff_t).
 228 # some C compilers supported these specifiers prior to C99 as an extension.
 229 AC_CACHE_CHECK(whether formatted IO functions support C99 size specifiers,
 230  ac_cv_c_c99_format,
 231 [# Actually git uses only %z (%zu) in alloc.c, and %t (%td) in mktag.c
 232 AC_RUN_IFELSE(
 233         [AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
 234                 [[char buf[64];
 235                 if (sprintf(buf, "%lld%hhd%jd%zd%td", (long long int)1, (char)2, (intmax_t)3, (size_t)4, (ptrdiff_t)5) != 5)
 236                   exit(1);
 237                 else if (strcmp(buf, "12345"))
 238                   exit(2);]])],
 239         [ac_cv_c_c99_format=yes],
 240         [ac_cv_c_c99_format=no])
 241 ])
 242 if test $ac_cv_c_c99_format = no; then
 243         GIT_CONF_APPEND_LINE(NO_C99_FORMAT=YesPlease)
 244 else
 245         GIT_CONF_APPEND_LINE(NO_C99_FORMAT=)
 246 fi
 247
 248
 249 ## Checks for library functions.
 250 ## (in default C library and libraries checked by AC_CHECK_LIB)
 251 AC_MSG_NOTICE([CHECKS for library functions])
 252 #
 253 # Define NO_STRCASESTR if you don't have strcasestr.
 254 AC_CHECK_FUNC(strcasestr,
 255 [GIT_CONF_APPEND_LINE(NO_STRCASESTR=)],
 256 [GIT_CONF_APPEND_LINE(NO_STRCASESTR=YesPlease)])
 257 #
 258 # Define NO_STRLCPY if you don't have strlcpy.
 259 AC_CHECK_FUNC(strlcpy,
 260 [GIT_CONF_APPEND_LINE(NO_STRLCPY=)],
 261 [GIT_CONF_APPEND_LINE(NO_STRLCPY=YesPlease)])
 262 #
 263 # Define NO_SETENV if you don't have setenv in the C library.
 264 AC_CHECK_FUNC(setenv,
 265 [GIT_CONF_APPEND_LINE(NO_SETENV=)],
 266 [GIT_CONF_APPEND_LINE(NO_SETENV=YesPlease)])
 267 #
 268 # Define NO_MMAP if you want to avoid mmap.
 269 #
 270 # Define NO_ICONV if your libc does not properly support iconv.
 271
 272
 273 ## Other checks.
 274 # Define USE_PIC if you need the main git objects to be built with -fPIC
 275 # in order to build and link perl/Git.so.  x86-64 seems to need this.
 276 #
 277 # Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
 278 # Enable it on Windows.  By default, symrefs are still used.
 279 #
 280 # Define WITH_OWN_SUBPROCESS_PY if you want to use with python 2.3.
 281 #
 282 # Define NO_ACCURATE_DIFF if your diff program at least sometimes misses
 283 # a missing newline at the end of the file.
 284
 285
 286 ## Output files
 287 AC_CONFIG_FILES(["${config_file}":"${config_in}":"${config_append}"])
 288 AC_OUTPUT
 289
 290
 291 ## Cleanup
 292 rm -f "${config_append}"