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[flac.git] / configure.ac
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1 #  FLAC - Free Lossless Audio Codec
2 #  Copyright (C) 2001,2002,2003,2004,2005,2006,2007,2008,2009  Josh Coalson
4 #  This file is part the FLAC project.  FLAC is comprised of several
5 #  components distributed under different licenses.  The codec libraries
6 #  are distributed under Xiph.Org's BSD-like license (see the file
7 #  COPYING.Xiph in this distribution).  All other programs, libraries, and
8 #  plugins are distributed under the GPL (see COPYING.GPL).  The documentation
9 #  is distributed under the Gnu FDL (see COPYING.FDL).  Each file in the
10 #  FLAC distribution contains at the top the terms under which it may be
11 #  distributed.
13 #  Since this particular file is relevant to all components of FLAC,
14 #  it may be distributed under the Xiph.Org license, which is the least
15 #  restrictive of those mentioned above.  See the file COPYING.Xiph in this
16 #  distribution.
18 # NOTE that for many of the AM_CONDITIONALs we use the prefix FLaC__
19 # instead of FLAC__ since autoconf triggers off 'AC_' in strings
21 AC_PREREQ(2.60)
22 AC_INIT([flac], [1.3.3], [flac-dev@xiph.org], [flac], [https://www.xiph.org/flac/])
23 AC_CONFIG_HEADERS([config.h])
24 AC_CONFIG_SRCDIR([src/flac/main.c])
25 AC_CONFIG_MACRO_DIR([m4])
26 AM_INIT_AUTOMAKE([foreign 1.10 -Wall tar-pax no-dist-gzip dist-xz subdir-objects])
27 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
29 AC_MSG_CHECKING([whether configure should try to set CFLAGS/CXXFLAGS/CPPFLAGS/LDFLAGS])
30 AS_IF([test "x${CFLAGS+set}" = "xset" || test "x${CXXFLAGS+set}" = "xset" || test "x${CPPFLAGS+set}" = "xset" || test "x${LDFLAGS+set}" = "xset"],
31         [enable_flags_setting=no],
32         [enable_flags_setting=yes]
34 AC_MSG_RESULT([${enable_flags_setting}])
35 AX_CHECK_ENABLE_DEBUG
36 user_cflags=$CFLAGS
38 #Prefer whatever the current ISO standard is.
39 AC_PROG_CC_STDC
40 AC_USE_SYSTEM_EXTENSIONS
41 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
42 LT_INIT([win32-dll disable-static pic-only])
43 AM_PROG_AS
44 AC_PROG_CXX
45 XIPH_C_COMPILER_IS_CLANG
46 XIPH_GCC_REALLY_IS_GCC
47 AC_PROG_MAKE_SET
48 AC_PROG_MKDIR_P
50 AC_SYS_LARGEFILE
51 AC_FUNC_FSEEKO
53 AC_CHECK_SIZEOF(off_t,1)        # Fake default value.
54 AC_CHECK_SIZEOF([void*])
55 AC_SEARCH_LIBS([lround],[m], [AC_DEFINE(HAVE_LROUND,1,lround support)])
57 AC_LANG_PUSH([C++])
58 # c++ flavor first
59 AC_C_VARARRAYS
60 if test $ac_cv_c_vararrays = yes; then
61         AC_DEFINE([HAVE_CXX_VARARRAYS], 1, [Define to 1 if C++ supports variable-length arrays.])
63 AC_LANG_POP([C++])
65 # c flavor
66 AC_HEADER_STDC
67 AM_PROG_CC_C_O
68 AC_C_INLINE
69 AC_C_VARARRAYS
70 AC_C_TYPEOF
72 AC_CHECK_HEADERS([stdint.h inttypes.h byteswap.h sys/param.h sys/ioctl.h termios.h x86intrin.h cpuid.h])
74 XIPH_C_BSWAP32
75 XIPH_C_BSWAP16
77 ac_cv_c_big_endian=0
78 ac_cv_c_little_endian=0
79 AC_C_BIGENDIAN([ac_cv_c_big_endian=1], [ac_cv_c_little_endian=1], [
80         AC_MSG_WARN([[*****************************************************************]])
81         AC_MSG_WARN([[*** Not able to determine endian-ness of target processor.       ]])
82         AC_MSG_WARN([[*** The constants CPU_IS_BIG_ENDIAN and CPU_IS_LITTLE_ENDIAN in  ]])
83         AC_MSG_WARN([[*** config.h may need to be hand editied.                        ]])
84         AC_MSG_WARN([[*****************************************************************]])
86 AC_DEFINE_UNQUOTED(CPU_IS_BIG_ENDIAN, ${ac_cv_c_big_endian},
87                                         [Target processor is big endian.])
88 AC_DEFINE_UNQUOTED(CPU_IS_LITTLE_ENDIAN, ${ac_cv_c_little_endian},
89                                         [Target processor is little endian.])
90 AC_DEFINE_UNQUOTED(WORDS_BIGENDIAN, ${ac_cv_c_big_endian},
91                                         [Target processor is big endian.])
93 AC_ARG_ENABLE(asm-optimizations, AC_HELP_STRING([--disable-asm-optimizations], [Don't use any assembly optimization routines]), asm_opt=no, asm_opt=yes)
94 dnl ' Terminate the damn single quote
95 AM_CONDITIONAL(FLaC__NO_ASM, test "x$asm_opt" = xno)
96 if test "x$asm_opt" = xno ; then
97 AC_DEFINE(FLAC__NO_ASM)
98 AH_TEMPLATE(FLAC__NO_ASM, [define to disable use of assembly code])
101 # For the XMMS plugin.
102 AC_CHECK_TYPES(socklen_t, [], [])
104 dnl check for getopt in standard library
105 dnl AC_CHECK_FUNCS(getopt_long , , [LIBOBJS="$LIBOBJS getopt.o getopt1.o"] )
106 AC_CHECK_FUNCS(getopt_long, [], [])
108 AC_CHECK_SIZEOF(void*,1)
110 asm_optimisation=no
111 case "$host_cpu" in
112         amd64|x86_64)
113                 case "$host" in
114                         *gnux32)
115                                 # x32 user space and 64 bit kernel.
116                                 cpu_x86_64=true
117                                 AC_DEFINE(FLAC__CPU_X86_64)
118                                 AH_TEMPLATE(FLAC__CPU_X86_64, [define if building for x86_64])
119                                 asm_optimisation=$asm_opt
120                                 ;;
121                         *)
122                                 if test $ac_cv_sizeof_voidp = 4 ; then
123                                         # This must be a 32 bit user space running on 64 bit kernel so treat
124                                         # this as ia32.
125                                         cpu_ia32=true
126                                         AC_DEFINE(FLAC__CPU_IA32)
127                                         AH_TEMPLATE(FLAC__CPU_IA32, [define if building for ia32/i386])
128                         else
129                                         # x86_64 user space and kernel.
130                                         cpu_x86_64=true
131                                         AC_DEFINE(FLAC__CPU_X86_64)
132                                         AH_TEMPLATE(FLAC__CPU_X86_64, [define if building for x86_64])
133                                 fi
134                                 asm_optimisation=$asm_opt
135                                 ;;
136                 esac
137                 ;;
138         i*86)
139                 cpu_ia32=true
140                 AC_DEFINE(FLAC__CPU_IA32)
141                 AH_TEMPLATE(FLAC__CPU_IA32, [define if building for ia32/i386])
142                 asm_optimisation=$asm_opt
143                 ;;
144         powerpc64|powerpc64le)
145                 cpu_ppc64=true
146                 cpu_ppc=true
147                 AC_CHECK_HEADER(sys/auxv.h, AC_DEFINE(FLAC__CPU_PPC))
148                 AH_TEMPLATE(FLAC__CPU_PPC, [define if building for PowerPC])
149                 AC_DEFINE(FLAC__CPU_PPC64)
150                 AH_TEMPLATE(FLAC__CPU_PPC64, [define if building for PowerPC64])
151                 asm_optimisation=$asm_opt
152                 ;;
153         powerpc|powerpcle)
154                 cpu_ppc=true
155                 AC_CHECK_HEADER(sys/auxv.h, AC_DEFINE(FLAC__CPU_PPC))
156                 AH_TEMPLATE(FLAC__CPU_PPC, [define if building for PowerPC])
157                 asm_optimisation=$asm_opt
158                 ;;
159         sparc)
160                 cpu_sparc=true
161                 AC_DEFINE(FLAC__CPU_SPARC)
162                 AH_TEMPLATE(FLAC__CPU_SPARC, [define if building for SPARC])
163                 asm_optimisation=$asm_opt
164                 ;;
165 esac
166 AM_CONDITIONAL(FLAC__CPU_X86_64, test "x$cpu_x86_64" = xtrue)
167 AM_CONDITIONAL(FLaC__CPU_IA32, test "x$cpu_ia32" = xtrue)
168 AM_CONDITIONAL(FLaC__CPU_PPC, test "x$cpu_ppc" = xtrue)
169 AM_CONDITIONAL(FLaC__CPU_PPC64, test "x$cpu_ppc64" = xtrue)
170 AM_CONDITIONAL(FLaC__CPU_SPARC, test "x$cpu_sparc" = xtrue)
172 if test "x$ac_cv_header_x86intrin_h" = xyes; then
173 AC_DEFINE([FLAC__HAS_X86INTRIN], 1, [Set to 1 if <x86intrin.h> is available.])
174 else
175 AC_DEFINE([FLAC__HAS_X86INTRIN], 0)
178 if test x"$cpu_ppc64" = xtrue ; then
180 AC_C_ATTRIBUTE([target("cpu=power8")],
181   [have_cpu_power8=yes],
182   [have_cpu_power8=no])
183 if test x"$have_cpu_power8" = xyes ; then
184   AC_DEFINE(FLAC__HAS_TARGET_POWER8)
185   AH_TEMPLATE(FLAC__HAS_TARGET_POWER8, [define if compiler has __attribute__((target("cpu=power8"))) support])
188 AC_C_ATTRIBUTE([target("cpu=power9")],
189   [have_cpu_power9=yes],
190   [have_cpu_power9=no])
191 if test x"$have_cpu_power9" = xyes ; then
192   AC_DEFINE(FLAC__HAS_TARGET_POWER9)
193   AH_TEMPLATE(FLAC__HAS_TARGET_POWER9, [define if compiler has __attribute__((target("cpu=power9"))) support])
198 case "$host" in
199         i386-*-openbsd3.[[0-3]]) OBJ_FORMAT=aoutb ;;
200         *-*-cygwin|*mingw*) OBJ_FORMAT=win32 ;;
201         *-*-darwin*) OBJ_FORMAT=macho ;;
202         *emx*) OBJ_FORMAT=aout ;;
203         *djgpp) OBJ_FORMAT=coff ;;
204         *) OBJ_FORMAT=elf ;;
205 esac
206 AC_SUBST(OBJ_FORMAT)
208 os_is_windows=no
209 case "$host" in
210         *mingw*)
211                 CPPFLAGS="-D__MSVCRT_VERSION__=0x0601 $CPPFLAGS"
212                 os_is_windows=yes
213                 ;;
214 esac
216 AM_CONDITIONAL(OS_IS_WINDOWS, test "x$os_is_windows" = xyes)
218 case "$host" in
219         *-linux-*)
220                 sys_linux=true
221                 AC_DEFINE(FLAC__SYS_LINUX)
222                 AH_TEMPLATE(FLAC__SYS_LINUX, [define if building for Linux])
223                 ;;
224         *-*-darwin*)
225                 sys_darwin=true
226                 AC_DEFINE(FLAC__SYS_DARWIN)
227                 AH_TEMPLATE(FLAC__SYS_DARWIN, [define if building for Darwin / MacOS X])
228                 ;;
229 esac
230 AM_CONDITIONAL(FLaC__SYS_DARWIN, test "x$sys_darwin" = xtrue)
231 AM_CONDITIONAL(FLaC__SYS_LINUX, test "x$sys_linux" = xtrue)
233 if test "x$cpu_ia32" = xtrue || test "x$cpu_x86_64" = xtrue ; then
234 AC_DEFINE(FLAC__ALIGN_MALLOC_DATA)
235 AH_TEMPLATE(FLAC__ALIGN_MALLOC_DATA, [define to align allocated memory on 32-byte boundaries])
238 AM_CONDITIONAL([DEBUG], [test "x${ax_enable_debug}" = "xyes" || test "x${ax_enable_debug}" = "xinfo"])
240 AC_ARG_ENABLE(sse,
241 AC_HELP_STRING([--disable-sse], [Disable passing of -msse2 to the compiler]),
242 [case "${enableval}" in
243         yes) sse_os=yes ;;
244         no)  sse_os=no ;;
245         *) AC_MSG_ERROR(bad value ${enableval} for --enable-sse) ;;
246 esac],[sse_os=yes])
248 AC_ARG_ENABLE(altivec,
249 AC_HELP_STRING([--disable-altivec], [Disable Altivec optimizations]),
250 [case "${enableval}" in
251         yes) use_altivec=true ;;
252         no)  use_altivec=false ;;
253         *) AC_MSG_ERROR(bad value ${enableval} for --enable-altivec) ;;
254 esac],[use_altivec=true])
255 AM_CONDITIONAL(FLaC__USE_ALTIVEC, test "x$use_altivec" = xtrue)
256 if test "x$use_altivec" = xtrue ; then
257 AC_DEFINE(FLAC__USE_ALTIVEC)
258 AH_TEMPLATE(FLAC__USE_ALTIVEC, [define to enable use of Altivec instructions])
261 AC_ARG_ENABLE(vsx,
262 AC_HELP_STRING([--disable-vsx], [Disable VSX optimizations]),
263 [case "${enableval}" in
264         yes) use_vsx=true ;;
265         no)  use_vsx=false ;;
266         *) AC_MSG_ERROR(bad value ${enableval} for --enable-vsx) ;;
267 esac],[use_vsx=true])
268 AM_CONDITIONAL(FLaC__USE_VSX, test "x$use_vsx" = xtrue)
269 if test "x$use_vsx" = xtrue ; then
270 AC_DEFINE(FLAC__USE_VSX)
271 AH_TEMPLATE(FLAC__USE_VSX, [define to enable use of VSX instructions])
274 AC_ARG_ENABLE(avx,
275 AC_HELP_STRING([--disable-avx], [Disable AVX, AVX2 optimizations]),
276 [case "${enableval}" in
277         yes) use_avx=true ;;
278         no)  use_avx=false ;;
279         *) AC_MSG_ERROR(bad value ${enableval} for --enable-avx) ;;
280 esac],[use_avx=true])
281 AM_CONDITIONAL(FLaC__USE_AVX, test "x$use_avx" = xtrue)
282 if test "x$use_avx" = xtrue ; then
283 AC_DEFINE(FLAC__USE_AVX)
284 AH_TEMPLATE(FLAC__USE_AVX, [define to enable use of AVX instructions])
287 AC_ARG_ENABLE(thorough-tests,
288 AC_HELP_STRING([--disable-thorough-tests], [Disable thorough (long) testing, do only basic tests]),
289 [case "${enableval}" in
290         yes) thorough_tests=true ;;
291         no)  thorough_tests=false ;;
292         *) AC_MSG_ERROR(bad value ${enableval} for --enable-thorough-tests) ;;
293 esac],[thorough_tests=true])
294 AC_ARG_ENABLE(exhaustive-tests,
295 AC_HELP_STRING([--enable-exhaustive-tests], [Enable exhaustive testing (VERY long)]),
296 [case "${enableval}" in
297         yes) exhaustive_tests=true ;;
298         no)  exhaustive_tests=false ;;
299         *) AC_MSG_ERROR(bad value ${enableval} for --enable-exhaustive-tests) ;;
300 esac],[exhaustive_tests=false])
301 if test "x$thorough_tests" = xfalse ; then
302 FLAC__TEST_LEVEL=0
303 elif test "x$exhaustive_tests" = xfalse ; then
304 FLAC__TEST_LEVEL=1
305 else
306 FLAC__TEST_LEVEL=2
308 AC_SUBST(FLAC__TEST_LEVEL)
310 AC_ARG_ENABLE(werror,
311         AC_HELP_STRING([--enable-werror], [Enable -Werror in all Makefiles]))
313 AC_ARG_ENABLE([stack-smash-protection],
314     [AS_HELP_STRING([--disable-stack-smash-protection],[Disable GNU GCC stack smash protection])],,
315     [AS_IF([test "$ac_cv_c_compiler_gnu" = "yes" && test "$os_is_windows" = "no"],
316         [enable_stack_smash_protection=yes],[enable_stack_smash_protection=no])])
318 AC_ARG_ENABLE(64-bit-words,
319         AC_HELP_STRING([--enable-64-bit-words], [Set FLAC__BYTES_PER_WORD to 8 (4 is the default)]))
320 if test "x$enable_64_bit_words" = xyes ; then
321         AC_DEFINE_UNQUOTED([ENABLE_64_BIT_WORDS],1,[Set FLAC__BYTES_PER_WORD to 8 (4 is the default)])
322 else
323         AC_DEFINE_UNQUOTED([ENABLE_64_BIT_WORDS],0)
324         fi
325 AC_SUBST(ENABLE_64_BIT_WORDS)
327 AC_ARG_ENABLE(valgrind-testing,
328 AC_HELP_STRING([--enable-valgrind-testing], [Run all tests inside Valgrind]),
329 [case "${enableval}" in
330         yes) FLAC__TEST_WITH_VALGRIND=yes ;;
331         no)  FLAC__TEST_WITH_VALGRIND=no ;;
332         *) AC_MSG_ERROR(bad value ${enableval} for --enable-valgrind-testing) ;;
333 esac],[FLAC__TEST_WITH_VALGRIND=no])
334 AC_SUBST(FLAC__TEST_WITH_VALGRIND)
336 AC_ARG_ENABLE(doxygen-docs,
337 AC_HELP_STRING([--disable-doxygen-docs], [Disable API documentation building via Doxygen]),
338 [case "${enableval}" in
339         yes) enable_doxygen_docs=true ;;
340         no)  enable_doxygen_docs=false ;;
341         *) AC_MSG_ERROR(bad value ${enableval} for --enable-doxygen-docs) ;;
342 esac],[enable_doxygen_docs=true])
343 if test "x$enable_doxygen_docs" != xfalse ; then
344         AC_CHECK_PROGS(DOXYGEN, doxygen)
346 AM_CONDITIONAL(FLaC__HAS_DOXYGEN, test -n "$DOXYGEN")
348 AC_ARG_ENABLE(local-xmms-plugin,
349 AC_HELP_STRING([--enable-local-xmms-plugin], [Install XMMS plugin to ~/.xmms/Plugins instead of system location]),
350 [case "${enableval}" in
351         yes) install_xmms_plugin_locally=true ;;
352         no)  install_xmms_plugin_locally=false ;;
353         *) AC_MSG_ERROR(bad value ${enableval} for --enable-local-xmms-plugin) ;;
354 esac],[install_xmms_plugin_locally=false])
355 AM_CONDITIONAL(FLaC__INSTALL_XMMS_PLUGIN_LOCALLY, test "x$install_xmms_plugin_locally" = xtrue)
357 AC_ARG_ENABLE(xmms-plugin,
358 AC_HELP_STRING([--disable-xmms-plugin], [Do not build XMMS plugin]),
359 [case "${enableval}" in
360         yes) enable_xmms_plugin=true ;;
361         no)  enable_xmms_plugin=false ;;
362         *) AC_MSG_ERROR(bad value ${enableval} for --enable-xmms-plugin) ;;
363 esac],[enable_xmms_plugin=true])
364 if test "x$enable_xmms_plugin" != xfalse ; then
365         AM_PATH_XMMS(0.9.5.1, , AC_MSG_WARN([*** XMMS >= 0.9.5.1 not installed - XMMS support will not be built]))
367 AM_CONDITIONAL(FLaC__HAS_XMMS, test -n "$XMMS_INPUT_PLUGIN_DIR")
369 dnl build FLAC++ or not
370 AC_ARG_ENABLE([cpplibs],
371 AC_HELP_STRING([--disable-cpplibs], [Do not build libFLAC++]),
372 [case "${enableval}" in
373         yes) disable_cpplibs=false ;;
374         no)  disable_cpplibs=true ;;
375         *)   AC_MSG_ERROR(bad value ${enableval} for --enable-cpplibs) ;;
376 esac], [disable_cpplibs=false])
377 AM_CONDITIONAL(FLaC__WITH_CPPLIBS, [test "x$disable_cpplibs" != xtrue])
379 AC_ARG_ENABLE([oss-fuzzers],
380   [AS_HELP_STRING([--enable-oss-fuzzers],
381     [Whether to generate the fuzzers for OSS-Fuzz (Clang only)])],
382   [have_oss_fuzzers=yes], [have_oss_fuzzers=no])
384 if test "x$have_oss_fuzzers" = "xyes"; then
385   if test "x$xiph_cv_c_compiler_clang" = "xyes" ; then
386     AM_CONDITIONAL([USE_OSSFUZZERS], [test "x$have_oss_fuzzers" = "xyes"])
387     if test "x$LIB_FUZZING_ENGINE" = "x" ; then
388       # Only set this if it is empty.
389           LIB_FUZZING_ENGINE=-fsanitize=fuzzer
390     fi
391   else
392     AM_CONDITIONAL([USE_OSSFUZZERS], [test "false" = "true"])
393     # Disable fuzzer if the compiler is not Clang.
394     AC_MSG_WARN([*** Ozz-Fuzz is disabled because that requres the  Clang compiler.])
395     have_oss_fuzzers="no (compiler is GCC)"
396   fi
397 else
398   AM_CONDITIONAL([USE_OSSFUZZERS], [test "false" = "true"])
401 AM_CONDITIONAL([USE_OSSFUZZ_FLAG], [test "x$LIB_FUZZING_ENGINE" = "x-fsanitize=fuzzer"])
402 AM_CONDITIONAL([USE_OSSFUZZ_STATIC], [test -f "$LIB_FUZZING_ENGINE"])
403 AC_SUBST([LIB_FUZZING_ENGINE])
405 dnl check for ogg library
406 AC_ARG_ENABLE([ogg],
407         AC_HELP_STRING([--disable-ogg], [Disable ogg support (default: test for libogg)]),
408         [ want_ogg=$enableval ], [ want_ogg=yes ] )
410 if test "x$want_ogg" != "xno"; then
411         XIPH_PATH_OGG(have_ogg=yes, AC_MSG_WARN([*** Ogg development environment not installed - Ogg support will not be built]))
414 FLAC__HAS_OGG=0
415 AM_CONDITIONAL(FLaC__HAS_OGG, [test "x$have_ogg" = xyes])
416 if test "x$have_ogg" = xyes ; then
417         FLAC__HAS_OGG=1
418         OGG_PACKAGE="ogg"
419 else
420         have_ogg=no
422 AC_DEFINE_UNQUOTED([FLAC__HAS_OGG],$FLAC__HAS_OGG,[define if you have the ogg library])
423 AC_SUBST(FLAC__HAS_OGG)
424 AC_SUBST(OGG_PACKAGE)
426 dnl Build examples?
427 AC_ARG_ENABLE([examples],
428         AS_HELP_STRING([--disable-examples], [Don't build and install examples]))
429 AM_CONDITIONAL([EXAMPLES], [test "x$enable_examples" != "xno"])
431 dnl check for i18n(internationalization); these are from libiconv/gettext
432 AM_ICONV
433 AM_LANGINFO_CODESET
435 AC_CHECK_PROGS(DOCBOOK_TO_MAN, docbook-to-man docbook2man)
436 AM_CONDITIONAL(FLaC__HAS_DOCBOOK_TO_MAN, test -n "$DOCBOOK_TO_MAN")
437 if test -n "$DOCBOOK_TO_MAN" ; then
438 AC_DEFINE(FLAC__HAS_DOCBOOK_TO_MAN)
439 AH_TEMPLATE(FLAC__HAS_DOCBOOK_TO_MAN, [define if you have docbook-to-man or docbook2man])
442 AC_CHECK_LIB(rt, clock_gettime,
443         LIB_CLOCK_GETTIME=-lrt
444         AC_DEFINE(HAVE_CLOCK_GETTIME)
445         AH_TEMPLATE(HAVE_CLOCK_GETTIME, [define if you have clock_gettime]))
446 AC_SUBST(LIB_CLOCK_GETTIME)
448 # only matters for x86
449 AC_CHECK_PROGS(NASM, nasm)
450 AM_CONDITIONAL(FLaC__HAS_NASM, test -n "$NASM")
451 if test -n "$NASM" ; then
452 AC_DEFINE(FLAC__HAS_NASM)
453 AH_TEMPLATE(FLAC__HAS_NASM, [define if you are compiling for x86 and have the NASM assembler])
456 dnl If debugging is disabled AND no CFLAGS/CXXFLAGS/CPPFLAGS/LDFLAGS
457 dnl are provided, we can set defaults to our liking
458 AS_IF([test "x${ax_enable_debug}" = "xno" && test "x${enable_flags_setting}" = "xyes"], [
459         CFLAGS="-O3 -funroll-loops"
460         CXXFLAGS="-O3"
463 XIPH_GCC_VERSION dnl Sets a non-zero GCC_XXX_VERSION for gcc, not clang. checks below rely on that..
465 if test x$ac_cv_c_compiler_gnu = xyes -o x$xiph_cv_c_compiler_clang = xyes ; then
466         CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Waggregate-return -Wcast-align -Wnested-externs -Wshadow -Wundef -Wmissing-declarations -Winline " # -Wcast-qual -Wbad-function-cast -Wwrite-strings -Wconversion
467         CXXFLAGS="$CXXFLAGS -Wall -Wextra -Wcast-align -Wshadow -Wwrite-strings -Wctor-dtor-privacy -Wnon-virtual-dtor -Wreorder -Wsign-promo -Wundef " # -Wcast-qual -Wbad-function-cast -Wwrite-strings -Woverloaded-virtual -Wmissing-declarations
469         XIPH_ADD_CFLAGS([-Wdeclaration-after-statement])
471         dnl some distributions (such as Gentoo) have _FORTIFY_SOURCE always
472         dnl enabled. We test for this situation in order to prevent polluting
473         dnl the console with messages of macro redefinitions.
474         AX_ADD_FORTIFY_SOURCE
476         AC_LANG_PUSH([C++])
477         XIPH_ADD_CXXFLAGS([-Weffc++])
478         AC_LANG_POP([C++])
480         if test x$xiph_cv_c_compiler_clang = xyes -a "$OBJ_FORMAT" = elf; then
481                 CPPFLAGS="$CPPFLAGS -DFLAC__USE_VISIBILITY_ATTR"
482                 CFLAGS="$CFLAGS -fvisibility=hidden"
483                 CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
484         elif test "$GCC_MAJOR_VERSION" -ge 4 && test "$OBJ_FORMAT" = elf; then
485                 CPPFLAGS="$CPPFLAGS -DFLAC__USE_VISIBILITY_ATTR"
486                 CFLAGS="$CFLAGS -fvisibility=hidden"
487                 CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
488                 fi
491         if test x$xiph_cv_c_compiler_clang = xyes -a "$OBJ_FORMAT" = macho; then
492                 CPPFLAGS="$CPPFLAGS -DFLAC__USE_VISIBILITY_ATTR"
493                 CFLAGS="$CFLAGS -fvisibility=hidden"
494                 CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
495         elif test "$GCC_MAJOR_VERSION" -ge 4 && test "$OBJ_FORMAT" = macho; then
496                 CPPFLAGS="$CPPFLAGS -DFLAC__USE_VISIBILITY_ATTR"
497                 CFLAGS="$CFLAGS -fvisibility=hidden"
498                 CXXFLAGS="$CXXFLAGS -fvisibility=hidden"
499                 fi
501         if test "x$GCC_MAJOR_VERSION$GCC_MINOR_VERSION" = "x42" ; then
502                 XIPH_ADD_CFLAGS([-fgnu89-inline])
503                 fi
505         if test "x$GCC_MAJOR_VERSION$GCC_MINOR_VERSION" = "x47" ; then
506                 XIPH_ADD_CFLAGS([-fno-inline-small-functions])
507                 fi
509         if test "x$asm_optimisation$sse_os" = "xyesyes" ; then
510                 XIPH_ADD_CFLAGS([-msse2])
511                 fi
513         fi
515 case "$host_os" in
516         "mingw32"|"os2")
517         if test "$host_cpu" = "i686"; then
518                 XIPH_ADD_CFLAGS([-mstackrealign])
519                 fi
520         esac
522 if test x$enable_werror = "xyes" ; then
523         XIPH_ADD_CFLAGS([-Werror])
524         AC_LANG_PUSH([C++])
525         XIPH_ADD_CXXFLAGS([-Werror])
526         AC_LANG_POP([C++])
527         fi
529 if test x$enable_stack_smash_protection = "xyes" ; then
530         XIPH_GCC_STACK_PROTECTOR
531         XIPH_GXX_STACK_PROTECTOR
532         fi
534 AH_VERBATIM([FLAC_API_EXPORTS],
535 [/* libtool defines DLL_EXPORT for windows dll builds,
536    but flac code relies on FLAC_API_EXPORTS instead. */
537 #ifdef DLL_EXPORT
538 #ifdef __cplusplus
539 # define FLACPP_API_EXPORTS
540 #else
541 # define FLAC_API_EXPORTS
542 #endif
543 #endif])
545 if test x$enable_shared != "xyes" ; then
546 dnl for correct FLAC_API
547         CPPFLAGS="-DFLAC__NO_DLL $CPPFLAGS"
548         fi
550 AC_CONFIG_FILES([ \
551         Makefile \
552         src/Makefile \
553         src/libFLAC/Makefile \
554         src/libFLAC/flac.pc \
555         src/libFLAC/ia32/Makefile \
556         src/libFLAC/include/Makefile \
557         src/libFLAC/include/private/Makefile \
558         src/libFLAC/include/protected/Makefile \
559         src/libFLAC++/Makefile \
560         src/libFLAC++/flac++.pc \
561         src/flac/Makefile \
562         src/metaflac/Makefile \
563         src/plugin_common/Makefile \
564         src/plugin_xmms/Makefile \
565         src/share/Makefile \
566         src/test_grabbag/Makefile \
567         src/test_grabbag/cuesheet/Makefile \
568         src/test_grabbag/picture/Makefile \
569         src/test_libs_common/Makefile \
570         src/test_libFLAC/Makefile \
571         src/test_libFLAC++/Makefile \
572         src/test_seeking/Makefile \
573         src/test_streams/Makefile \
574         src/utils/Makefile \
575         src/utils/flacdiff/Makefile \
576         src/utils/flactimer/Makefile \
577         examples/Makefile \
578         examples/c/Makefile \
579         examples/c/decode/Makefile \
580         examples/c/decode/file/Makefile \
581         examples/c/encode/Makefile \
582         examples/c/encode/file/Makefile \
583         examples/cpp/Makefile \
584         examples/cpp/decode/Makefile \
585         examples/cpp/decode/file/Makefile \
586         examples/cpp/encode/Makefile \
587         examples/cpp/encode/file/Makefile \
588         include/Makefile \
589         include/FLAC/Makefile \
590         include/FLAC++/Makefile \
591         include/share/Makefile \
592         include/share/grabbag/Makefile \
593         include/test_libs_common/Makefile \
594         doc/Doxyfile \
595         doc/Makefile \
596         doc/html/Makefile \
597         doc/html/images/Makefile \
598         m4/Makefile \
599         man/Makefile \
600         test/common.sh \
601         test/Makefile \
602         test/cuesheets/Makefile \
603         test/flac-to-flac-metadata-test-files/Makefile \
604         test/metaflac-test-files/Makefile \
605         test/pictures/Makefile \
606         build/Makefile \
607         microbench/Makefile \
608         oss-fuzz/Makefile
610 AC_OUTPUT
612 AC_MSG_RESULT([
613 -=-=-=-=-=-=-=-=-=-= Configuration Complete =-=-=-=-=-=-=-=-=-=-
615   Configuration summary :
617     FLAC version : ............................ ${VERSION}
619     Host CPU : ................................ ${host_cpu}
620     Host Vendor : ............................. ${host_vendor}
621     Host OS : ................................. ${host_os}
624         echo "    Compiler is GCC : ......................... ${ac_cv_c_compiler_gnu}"
625 if test x$ac_cv_c_compiler_gnu = xyes ; then
626         echo "    GCC version : ............................. ${GCC_VERSION}"
628         echo "    Compiler is Clang : ....................... ${xiph_cv_c_compiler_clang}"
629         echo "    SSE optimizations : ....................... ${sse_os}"
630         echo "    Asm optimizations : ....................... ${asm_optimisation}"
631         echo "    Ogg/FLAC support : ........................ ${have_ogg}"
632         echo "    Stack protector  : ........................ ${enable_stack_smash_protection}"
633         echo "    Fuzzing support (Clang only) : ............ ${have_oss_fuzzers}"
634 echo