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      1 AC_PREREQ(2.64)
      2 AC_INIT([kmod],
      3 	[24],
      4 	[linux-modules (a] vger.kernel.org],
      5 	[kmod],
      6 	[http://git.kernel.org/?p=utils/kernel/kmod/kmod.git])
      7 
      8 AC_CONFIG_SRCDIR([libkmod/libkmod.c])
      9 AC_CONFIG_MACRO_DIR([m4])
     10 AC_CONFIG_HEADERS(config.h)
     11 AC_CONFIG_AUX_DIR([build-aux])
     12 
     13 AC_USE_SYSTEM_EXTENSIONS
     14 AC_SYS_LARGEFILE
     15 AC_PREFIX_DEFAULT([/usr])
     16 AM_MAINTAINER_MODE([enable])
     17 AM_INIT_AUTOMAKE([check-news foreign 1.11 silent-rules tar-pax no-dist-gzip dist-xz subdir-objects color-tests parallel-tests])
     18 AM_SILENT_RULES([yes])
     19 LT_INIT([disable-static pic-only])
     20 DOLT
     21 
     22 AS_IF([test "x$enable_static" = "xyes"], [AC_MSG_ERROR([--enable-static is not supported by kmod])])
     23 AS_IF([test "x$enable_largefile" = "xno"], [AC_MSG_ERROR([--disable-largefile is not supported by kmod])])
     24 
     25 #####################################################################
     26 # Program checks and configurations
     27 #####################################################################
     28 
     29 AC_PROG_SED
     30 AC_PROG_MKDIR_P
     31 AC_PROG_LN_S
     32 PKG_PROG_PKG_CONFIG
     33 AC_PATH_PROG([XSLTPROC], [xsltproc])
     34 
     35 AC_PROG_CC_C99
     36 
     37 #####################################################################
     38 # Function and structure checks
     39 #####################################################################
     40 
     41 AC_CHECK_FUNCS_ONCE(__xstat)
     42 AC_CHECK_FUNCS_ONCE([__secure_getenv secure_getenv])
     43 AC_CHECK_FUNCS_ONCE([finit_module])
     44 
     45 CC_CHECK_FUNC_BUILTIN([__builtin_clz])
     46 CC_CHECK_FUNC_BUILTIN([__builtin_types_compatible_p])
     47 CC_CHECK_FUNC_BUILTIN([__builtin_uaddl_overflow], [ ], [ ])
     48 CC_CHECK_FUNC_BUILTIN([__builtin_uaddll_overflow], [ ], [ ])
     49 
     50 # dietlibc doesn't have st.st_mtim struct member
     51 AC_CHECK_MEMBERS([struct stat.st_mtim], [], [], [#include <sys/stat.h>])
     52 
     53 # musl 1.0 and bionic 4.4 don't have strndupa
     54 AC_CHECK_DECLS_ONCE([strndupa])
     55 
     56 # RHEL 5 and older do not have be32toh
     57 AC_CHECK_DECLS_ONCE([be32toh])
     58 
     59 # Check kernel headers
     60 AC_CHECK_HEADERS_ONCE([linux/module.h])
     61 
     62 AC_MSG_CHECKING([whether _Static_assert() is supported])
     63 AC_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])])
     68 
     69 AC_MSG_CHECKING([whether _Noreturn is supported])
     70 AC_COMPILE_IFELSE(
     71 	[AC_LANG_SOURCE([[_Noreturn int foo(void) { exit(0); }]])],
     72         [AC_DEFINE([HAVE_NORETURN], [1], [Define if _Noreturn is available])
     73 	 AC_MSG_RESULT([yes])],
     74 	[AC_MSG_RESULT([no])])
     75 
     76 
     77 #####################################################################
     78 # --with-
     79 #####################################################################
     80 
     81 AC_ARG_WITH([rootlibdir],
     82         AS_HELP_STRING([--with-rootlibdir=DIR], [rootfs directory to install shared libraries]),
     83         [], [with_rootlibdir=$libdir])
     84 AC_SUBST([rootlibdir], [$with_rootlibdir])
     85 
     86 AC_ARG_WITH([xz],
     87 	AS_HELP_STRING([--with-xz], [handle Xz-compressed modules @<:@default=disabled@:>@]),
     88 	[], [with_xz=no])
     89 AS_IF([test "x$with_xz" != "xno"], [
     90 	PKG_CHECK_MODULES([liblzma], [liblzma >= 4.99])
     91 	AC_DEFINE([ENABLE_XZ], [1], [Enable Xz for modules.])
     92 ], [
     93 	AC_MSG_NOTICE([Xz support not requested])
     94 ])
     95 CC_FEATURE_APPEND([with_features], [with_xz], [XZ])
     96 
     97 AC_ARG_WITH([zlib],
     98 	AS_HELP_STRING([--with-zlib], [handle gzipped modules @<:@default=disabled@:>@]),
     99 	[], [with_zlib=no])
    100 AS_IF([test "x$with_zlib" != "xno"], [
    101 	PKG_CHECK_MODULES([zlib], [zlib])
    102 	AC_DEFINE([ENABLE_ZLIB], [1], [Enable zlib for modules.])
    103 ], [
    104 	AC_MSG_NOTICE([zlib support not requested])
    105 ])
    106 CC_FEATURE_APPEND([with_features], [with_zlib], [ZLIB])
    107 
    108 AC_ARG_WITH([bashcompletiondir],
    109 	AS_HELP_STRING([--with-bashcompletiondir=DIR], [Bash completions directory]),
    110 	[],
    111 	[AS_IF([$($PKG_CONFIG --exists bash-completion)], [
    112 		with_bashcompletiondir=$($PKG_CONFIG --variable=completionsdir bash-completion)
    113 	] , [
    114 		with_bashcompletiondir=${datadir}/bash-completion/completions
    115 	])])
    116 AC_SUBST([bashcompletiondir], [$with_bashcompletiondir])
    117 
    118 #####################################################################
    119 # --enable-
    120 #####################################################################
    121 
    122 AC_ARG_ENABLE([experimental],
    123         AS_HELP_STRING([--enable-experimental], [enable experimental tools and features. Do not enable it unless you know what you are doing. @<:@default=disabled@:>@]),
    124         [], enable_experimental=no)
    125 AM_CONDITIONAL([BUILD_EXPERIMENTAL], [test "x$enable_experimental" = "xyes"])
    126 AS_IF([test "x$enable_experimental" = "xyes"], [
    127 	AC_DEFINE(ENABLE_EXPERIMENTAL, [1], [Experimental features.])
    128 ])
    129 CC_FEATURE_APPEND([with_features], [enable_experimental], [EXPERIMENTAL])
    130 
    131 AC_ARG_ENABLE([tools],
    132         AS_HELP_STRING([--disable-tools], [disable building tools that provide same functionality as module-init-tools @<:@default=enabled@:>@]),
    133 	[], enable_tools=yes)
    134 AM_CONDITIONAL([BUILD_TOOLS], [test "x$enable_tools" = "xyes"])
    135 
    136 AC_ARG_ENABLE([manpages],
    137         AS_HELP_STRING([--disable-manpages], [disable manpages @<:@default=enabled@:>@]),
    138 	[], enable_manpages=yes)
    139 AM_CONDITIONAL([BUILD_MANPAGES], [test "x$enable_manpages" = "xyes"])
    140 
    141 AC_ARG_ENABLE([test-modules],
    142         AS_HELP_STRING([--disable-test-modules], [disable building test modules during make check: cached modules will be used @<:@default=enabled@:>@]),
    143 	[], enable_test_modules=yes)
    144 AM_CONDITIONAL([BUILD_MODULES], [test "x$enable_test_modules" = "xyes"])
    145 
    146 AC_ARG_ENABLE([logging],
    147 	AS_HELP_STRING([--disable-logging], [disable system logging @<:@default=enabled@:>@]),
    148 	[], enable_logging=yes)
    149 AS_IF([test "x$enable_logging" = "xyes"], [
    150 	AC_DEFINE(ENABLE_LOGGING, [1], [System logging.])
    151 ])
    152 
    153 AC_ARG_ENABLE([debug],
    154 	AS_HELP_STRING([--enable-debug], [enable debug messages @<:@default=disabled@:>@]),
    155 	[], [enable_debug=no])
    156 AS_IF([test "x$enable_debug" = "xyes"], [
    157 	AC_DEFINE(ENABLE_DEBUG, [1], [Debug messages.])
    158 ])
    159 
    160 AC_ARG_ENABLE([python],
    161 	AS_HELP_STRING([--enable-python], [enable Python libkmod bindings @<:@default=disabled@:>@]),
    162 	[], [enable_python=no])
    163 AS_IF([test "x$enable_python" = "xyes"], [
    164 	AM_PATH_PYTHON(,,[:])
    165 	AC_PATH_PROG([CYTHON], [cython], [:])
    166 
    167 	PKG_CHECK_MODULES([PYTHON], [python-${PYTHON_VERSION}],
    168 			  [have_python=yes],
    169 			  [PKG_CHECK_MODULES([PYTHON], [python],
    170 					     [have_python=yes],
    171 					     [have_python=no])])
    172 
    173 	AS_IF([test "x$have_python" = xno],
    174 	      [AC_MSG_ERROR([*** python support requested but libraries not found])])
    175 ])
    176 AM_CONDITIONAL([BUILD_PYTHON], [test "x$enable_python" = "xyes"])
    177 
    178 AC_ARG_ENABLE([coverage],
    179 	AS_HELP_STRING([--enable-coverage], [enable test coverage @<:@default=disabled@:>@]),
    180 	[], [enable_coverage=no])
    181 AS_IF([test "x$enable_coverage" = "xyes"], [
    182 	AC_CHECK_PROG(have_coverage, [lcov], [yes], [no])
    183 	AS_IF([test "x$have_coverage" = xno],[
    184 		AC_MSG_ERROR([*** lcov support requested but the program was not found])
    185 	], [
    186 		lcov_version_major="`lcov --version | cut -d ' ' -f 4 | cut -d '.' -f 1`"
    187 		lcov_version_minor="`lcov --version | cut -d ' ' -f 4 | cut -d '.' -f 2`"
    188 		AS_IF([test "$lcov_version_major" -lt 1 -o "$lcov_version_minor" -lt 10], [
    189 			AC_MSG_ERROR([*** lcov version is too old. 1.10 required])
    190 		], [
    191 			have_coverage=yes
    192                         CC_CHECK_FLAGS_APPEND([with_coverage_cflags], [CFLAGS], [\
    193                         -fprofile-arcs \
    194                         -ftest-coverage])
    195 		])
    196         ])
    197 ])
    198 AM_CONDITIONAL([ENABLE_COVERAGE], [test "x$enable_coverage" = "xyes"])
    199 
    200 m4_ifdef([GTK_DOC_CHECK], [
    201 GTK_DOC_CHECK([1.14],[--flavour no-tmpl-flat])
    202 ], [
    203 AM_CONDITIONAL([ENABLE_GTK_DOC], false)])
    204 
    205 
    206 #####################################################################
    207 # Default CFLAGS and LDFLAGS
    208 #####################################################################
    209 
    210 CC_CHECK_FLAGS_APPEND(with_cflags, [CFLAGS], [\
    211 		       -pipe \
    212 		       -DANOTHER_BRICK_IN_THE \
    213 		       -Wall \
    214 		       -W \
    215 		       -Wextra \
    216 		       -Wno-inline \
    217 		       -Wvla \
    218 		       -Wundef \
    219 		       -Wformat=2 \
    220 		       -Wlogical-op \
    221 		       -Wsign-compare \
    222 		       -Wformat-security \
    223 		       -Wmissing-include-dirs \
    224 		       -Wformat-nonliteral \
    225 		       -Wold-style-definition \
    226 		       -Wpointer-arith \
    227 		       -Winit-self \
    228 		       -Wdeclaration-after-statement \
    229 		       -Wfloat-equal \
    230 		       -Wmissing-prototypes \
    231 		       -Wstrict-prototypes \
    232 		       -Wredundant-decls \
    233 		       -Wmissing-declarations \
    234 		       -Wmissing-noreturn \
    235 		       -Wshadow \
    236 		       -Wendif-labels \
    237 		       -Wstrict-aliasing=3 \
    238 		       -Wwrite-strings \
    239 		       -Wno-long-long \
    240 		       -Wno-overlength-strings \
    241 		       -Wno-unused-parameter \
    242 		       -Wno-missing-field-initializers \
    243 		       -Wno-unused-result \
    244 		       -Wnested-externs \
    245 		       -Wchar-subscripts \
    246 		       -Wtype-limits \
    247 		       -Wuninitialized \
    248 		       -fno-common \
    249 		       -fdiagnostics-show-option \
    250 		       -fvisibility=hidden \
    251 		       -ffunction-sections \
    252 		       -fdata-sections])
    253 AC_SUBST([OUR_CFLAGS], "$with_cflags $with_coverage_cflags")
    254 
    255 
    256 CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [ \
    257 		       -Wl,--as-needed \
    258 		       -Wl,--no-undefined \
    259 		       -Wl,--gc-sections])
    260 AC_SUBST([OUR_LDFLAGS], $with_ldflags)
    261 
    262 AC_DEFINE_UNQUOTED(KMOD_FEATURES, ["$with_features"], [Features in this build])
    263 
    264 #####################################################################
    265 # Generate files from *.in
    266 #####################################################################
    267 
    268 AC_CONFIG_FILES([
    269 	Makefile
    270 	man/Makefile
    271 	libkmod/docs/Makefile
    272 	libkmod/docs/version.xml
    273 ])
    274 
    275 
    276 #####################################################################
    277 
    278 AC_OUTPUT
    279 AC_MSG_RESULT([
    280 	$PACKAGE $VERSION
    281 	=======
    282 
    283 	prefix:			${prefix}
    284 	sysconfdir:		${sysconfdir}
    285 	libdir:			${libdir}
    286 	rootlibdir:		${rootlibdir}
    287 	includedir:		${includedir}
    288 	bindir:			${bindir}
    289 	Bash completions dir:   ${with_bashcompletiondir}
    290 
    291 	compiler:		${CC}
    292 	cflags:			${with_cflags} ${CFLAGS}
    293 	ldflags:		${with_ldflags} ${LDFLAGS}
    294 
    295 	experimental features:  ${enable_experimental}
    296 	tools:			${enable_tools}
    297 	python bindings:	${enable_python}
    298 	logging:		${enable_logging}
    299 	compression:		xz=${with_xz}  zlib=${with_zlib}
    300 	debug:			${enable_debug}
    301 	coverage:		${enable_coverage}
    302 	doc:			${enable_gtk_doc}
    303 	man:			${enable_manpages}
    304 	test-modules:           ${enable_test_modules}
    305 
    306 	features:               ${with_features}
    307 ])
    308