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build: enable LTO and _FORTIFY_SOURCE with optimization
[thirdparty/kmod.git] / configure.ac
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ecd40ee4 1AC_PREREQ(2.60)
cb48c9b2 2AC_INIT([kmod],
f9e2167b 3 [19],
e17cc3af 4 [linux-modules@vger.kernel.org],
cb48c9b2 5 [kmod],
bb05bc8a 6 [http://git.kernel.org/?p=utils/kernel/kmod/kmod.git])
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7
8AC_CONFIG_SRCDIR([libkmod/libkmod.c])
ecd40ee4 9AC_CONFIG_AUX_DIR([build-aux])
a597c8bb 10AM_INIT_AUTOMAKE([check-news foreign 1.11 silent-rules
8edd5bb2 11 tar-pax no-dist-gzip dist-xz subdir-objects color-tests parallel-tests])
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12AC_PROG_CC_STDC
13AC_USE_SYSTEM_EXTENSIONS
14AC_SYS_LARGEFILE
15AC_CONFIG_MACRO_DIR([m4])
fe8bf3b0 16m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])
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17AM_SILENT_RULES([yes])
18LT_INIT([disable-static pic-only])
19AC_PREFIX_DEFAULT([/usr])
f5cc26c7 20AM_MAINTAINER_MODE([enable])
ecd40ee4 21
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22AS_IF([test "x$enable_static" = "xyes"],
23 [AC_MSG_ERROR([--enable-static is not supported by kmod])])
24
25
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26#####################################################################
27# Program checks and configurations
28#####################################################################
29
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30AC_PROG_CC
31AC_PROG_CC_C99
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32AM_PROG_CC_C_O
33AC_PROG_GCC_TRADITIONAL
708624a4 34AC_C_BIGENDIAN
648a842b 35
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36AC_PROG_SED
37AC_PROG_MKDIR_P
7b3a74fc 38PKG_PROG_PKG_CONFIG
bccb4b25 39AC_PATH_PROG([XSLTPROC], [xsltproc])
3d8226ed 40
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41
42#####################################################################
43# Function and structure checks
44#####################################################################
45
d005aeb7 46AC_CHECK_FUNCS_ONCE(__xstat)
41a51c2a 47AC_CHECK_FUNCS_ONCE([__secure_getenv secure_getenv])
55112d19 48AC_CHECK_FUNCS_ONCE([finit_module])
d005aeb7 49
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50# dietlibc doesn't have st.st_mtim struct member
51AC_CHECK_MEMBERS([struct stat.st_mtim], [], [], [#include <sys/stat.h>])
52
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53# musl 1.0 and bionic 4.4 don't have strndupa
54AC_CHECK_DECLS_ONCE([strndupa])
55
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56# RHEL 5 and older do not have be32toh
57AC_CHECK_DECLS_ONCE([be32toh])
58
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59# Check kernel headers
60AC_CHECK_HEADERS_ONCE([linux/module.h])
61
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62AC_MSG_CHECKING([whether _Static_assert() is supported])
63AC_COMPILE_IFELSE(
64 [AC_LANG_SOURCE([[_Static_assert(1, "Test");]])],
65 [AC_DEFINE([HAVE_STATIC_ASSERT], [1], [Define if _Static_assert() is available])
66 AC_MSG_RESULT([yes])],
67 [AC_MSG_RESULT([no])])
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68
69#####################################################################
70# --with-
71#####################################################################
72
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73AC_ARG_WITH([rootlibdir],
74 AS_HELP_STRING([--with-rootlibdir=DIR], [rootfs directory to install shared libraries]),
75 [], [with_rootlibdir=$libdir])
76AC_SUBST([rootlibdir], [$with_rootlibdir])
77
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78AC_ARG_WITH([xz],
79 AS_HELP_STRING([--with-xz], [handle Xz-compressed modules @<:@default=disabled@:>@]),
80 [], [with_xz=no])
81AS_IF([test "x$with_xz" != "xno"], [
82 PKG_CHECK_MODULES([liblzma], [liblzma >= 4.99])
83 AC_DEFINE([ENABLE_XZ], [1], [Enable Xz for modules.])
84], [
85 AC_MSG_NOTICE([Xz support not requested])
86])
87
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88AC_ARG_WITH([zlib],
89 AS_HELP_STRING([--with-zlib], [handle gzipped modules @<:@default=disabled@:>@]),
90 [], [with_zlib=no])
91AS_IF([test "x$with_zlib" != "xno"], [
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92 PKG_CHECK_MODULES([zlib], [zlib])
93 AC_DEFINE([ENABLE_ZLIB], [1], [Enable zlib for modules.])
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94], [
95 AC_MSG_NOTICE([zlib support not requested])
cfb908bf 96])
3d8226ed 97
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98AC_ARG_WITH([bashcompletiondir],
99 AS_HELP_STRING([--with-bashcompletiondir=DIR], [Bash completions directory]),
100 [],
101 [AS_IF([$($PKG_CONFIG --exists bash-completion)], [
102 with_bashcompletiondir=$($PKG_CONFIG --variable=completionsdir bash-completion)
103 ] , [
104 with_bashcompletiondir=${datadir}/bash-completion/completions
105 ])])
106AC_SUBST([bashcompletiondir], [$with_bashcompletiondir])
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107
108#####################################################################
109# --enable-
110#####################################################################
111
112AC_ARG_ENABLE([tools],
113 AS_HELP_STRING([--disable-tools], [disable building tools that provide same functionality as module-init-tools @<:@default=enabled@:>@]),
114 [], enable_tools=yes)
115AM_CONDITIONAL([BUILD_TOOLS], [test "x$enable_tools" = "xyes"])
116
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117AC_ARG_ENABLE([manpages],
118 AS_HELP_STRING([--disable-manpages], [disable manpages @<:@default=enabled@:>@]),
119 [], enable_manpages=yes)
120AM_CONDITIONAL([BUILD_MANPAGES], [test "x$enable_manpages" = "xyes"])
121
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122AC_ARG_ENABLE([logging],
123 AS_HELP_STRING([--disable-logging], [disable system logging @<:@default=enabled@:>@]),
124 [], enable_logging=yes)
125AS_IF([test "x$enable_logging" = "xyes"], [
126 AC_DEFINE(ENABLE_LOGGING, [1], [System logging.])
127])
128
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129AC_ARG_ENABLE([debug],
130 AS_HELP_STRING([--enable-debug], [enable debug messages @<:@default=disabled@:>@]),
131 [], [enable_debug=no])
132AS_IF([test "x$enable_debug" = "xyes"], [
133 AC_DEFINE(ENABLE_DEBUG, [1], [Debug messages.])
134])
135
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136AC_ARG_ENABLE([python],
137 AS_HELP_STRING([--enable-python], [enable Python libkmod bindings @<:@default=disabled@:>@]),
138 [], [enable_python=no])
139AS_IF([test "x$enable_python" = "xyes"], [
140 AM_PATH_PYTHON(,,[:])
141 AC_PATH_PROG([CYTHON], [cython], [:])
142
143 PKG_CHECK_MODULES([PYTHON], [python-${PYTHON_VERSION}],
144 [have_python=yes],
145 [PKG_CHECK_MODULES([PYTHON], [python],
146 [have_python=yes],
147 [have_python=no])])
148
149 AS_IF([test "x$have_python" = xno],
150 [AC_MSG_ERROR([*** python support requested but libraries not found])])
151])
152AM_CONDITIONAL([BUILD_PYTHON], [test "x$enable_python" = "xyes"])
153
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154AC_ARG_ENABLE([coverage],
155 AS_HELP_STRING([--enable-coverage], [enable test coverage @<:@default=disabled@:>@]),
156 [], [enable_coverage=no])
157AS_IF([test "x$enable_coverage" = "xyes"], [
158 AC_CHECK_PROG(have_coverage, [lcov], [yes], [no])
159 AS_IF([test "x$have_coverage" = xno],[
160 AC_MSG_ERROR([*** lcov support requested but the program was not found])
161 ], [
162 lcov_version_major="`lcov --version | cut -d ' ' -f 4 | cut -d '.' -f 1`"
163 lcov_version_minor="`lcov --version | cut -d ' ' -f 4 | cut -d '.' -f 2`"
164 AS_IF([test "$lcov_version_major" -lt 1 -o "$lcov_version_minor" -lt 10], [
165 AC_MSG_ERROR([*** lcov version is too old. 1.10 required])
166 ], [
167 have_coverage=yes
168 CC_CHECK_FLAGS_APPEND([with_coverage_cflags], [CFLAGS], [\
169 -fprofile-arcs \
170 -ftest-coverage])
171 ])
172 ])
173])
174AM_CONDITIONAL([ENABLE_COVERAGE], [test "x$enable_coverage" = "xyes"])
175
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176m4_ifdef([GTK_DOC_CHECK], [
177GTK_DOC_CHECK([1.14],[--flavour no-tmpl-flat])
178], [
179AM_CONDITIONAL([ENABLE_GTK_DOC], false)])
180
181
182#####################################################################
183# Default CFLAGS and LDFLAGS
184#####################################################################
6068aaae 185
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186CC_CHECK_FLAGS_APPEND(with_cflags, [CFLAGS], [\
187 -pipe \
188 -DANOTHER_BRICK_IN_THE \
189 -Wall \
190 -W \
191 -Wextra \
192 -Wno-inline \
193 -Wvla \
194 -Wundef \
195 -Wformat=2 \
196 -Wlogical-op \
197 -Wsign-compare \
198 -Wformat-security \
199 -Wmissing-include-dirs \
200 -Wformat-nonliteral \
201 -Wold-style-definition \
202 -Wpointer-arith \
203 -Winit-self \
204 -Wdeclaration-after-statement \
205 -Wfloat-equal \
206 -Wmissing-prototypes \
207 -Wstrict-prototypes \
208 -Wredundant-decls \
209 -Wmissing-declarations \
210 -Wmissing-noreturn \
211 -Wshadow \
212 -Wendif-labels \
db62153e 213 -Wstrict-aliasing=3 \
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214 -Wwrite-strings \
215 -Wno-long-long \
216 -Wno-overlength-strings \
217 -Wno-unused-parameter \
218 -Wno-missing-field-initializers \
219 -Wno-unused-result \
220 -Wnested-externs \
221 -Wchar-subscripts \
222 -Wtype-limits \
223 -Wuninitialized \
224 -fno-common \
225 -fdiagnostics-show-option \
226 -fvisibility=hidden \
227 -ffunction-sections \
228 -fdata-sections])
e48f3765 229
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230AS_CASE([$CFLAGS], [*-O[[12345\ ]]*],
231 [CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
232 -flto -ffat-lto-objects])],
233 [AC_MSG_RESULT([skipping -flto, optimization not enabled])])
234
235AS_CASE([$CFLAGS], [*-O[[12345\ ]]*],
236 [CC_CHECK_FLAGS_APPEND([with_cppflags], [CPPFLAGS], [\
237 -Wp,-D_FORTIFY_SOURCE=2])],
238 [AC_MSG_RESULT([skipping -D_FORTIFY_SOURCE, optimization not enabled])])
239
240AC_SUBST([OUR_CFLAGS], "$with_cflags $with_coverage_cflags")
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241
242CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [ \
243 -Wl,--as-needed \
244 -Wl,--gc-sections])
84aaaedf 245AC_SUBST([OUR_LDFLAGS], $with_ldflags)
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246
247#####################################################################
248# Generate files from *.in
249#####################################################################
250
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251AC_CONFIG_HEADERS(config.h)
252AC_CONFIG_FILES([
253 Makefile
904b57d0 254 man/Makefile
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255 libkmod/docs/Makefile
256 libkmod/docs/version.xml
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257])
258
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259
260#####################################################################
646b83b8 261
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262AC_OUTPUT
263AC_MSG_RESULT([
264 $PACKAGE $VERSION
80cf2c8f 265 =======
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266
267 prefix: ${prefix}
268 sysconfdir: ${sysconfdir}
269 libdir: ${libdir}
e79bf83b 270 rootlibdir: ${rootlibdir}
ecd40ee4 271 includedir: ${includedir}
7c41c2dd 272 bindir: ${bindir}
80cf2c8f 273 Bash completions dir: ${with_bashcompletiondir}
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274
275 compiler: ${CC}
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276 cflags: ${with_cflags} ${CFLAGS}
277 ldflags: ${with_ldflags} ${LDFLAGS}
ecd40ee4 278
7c41c2dd 279 tools: ${enable_tools}
3a33a7a5 280 python bindings: ${enable_python}
ecd40ee4 281 logging: ${enable_logging}
b182f8fb 282 compression: xz=${with_xz} zlib=${with_zlib}
ecd40ee4 283 debug: ${enable_debug}
e9b0d1b4 284 coverage: ${enable_coverage}
646b83b8 285 doc: ${enable_gtk_doc}
382de85c 286 man: ${enable_manpages}
ecd40ee4 287])