3 # Process this file with autoconf to produce a configure script.
7 m4_define([folly_version_str], m4_esyscmd_s([cat VERSION]))
9 AC_INIT([folly], m4_translit(folly_version_str, [:], [.]), [folly@fb.com])
11 # We assume all revisions are backwards incompatible.
12 LT_VERSION=folly_version_str:0
13 AC_SUBST([LT_VERSION])
15 #declare pkg-config variables
16 PKG_VERSION=m4_join([.], m4_reverse(m4_translit(folly_version_str, [:], [,])))
17 AC_SUBST([PKG_VERSION])
18 AC_SUBST([PKG_CXXFLAGS])
22 AC_CONFIG_SRCDIR([Likely.h])
23 AC_CONFIG_HEADERS([config.h])
24 AX_PREFIX_CONFIG_H([folly-config.h], [folly], [config.h])
25 AC_CONFIG_AUX_DIR([build-aux])
27 AM_INIT_AUTOMAKE([foreign dist-bzip2 nostdinc subdir-objects])
29 AC_CONFIG_MACRO_DIR([m4])
36 # Checks for programs.
40 AC_CXX_COMPILE_STDCXX_1Y
42 # Be sure to add any -std option to CXXFLAGS before we invoke any
43 # AC_COMPILE_IFELSE() or similar macros. Any such macros that are invoked
44 # before we update CXXFLAGS will not be run with the same options that we use
45 # during the real build.
47 if test "x$ac_cv_cxx_compile_cxx1y_cxx" = xyes; then
50 if test "x$ac_cv_cxx_compile_cxx1y_gxx" = xyes; then
54 CXXFLAGS="$STD $CXXFLAGS"
56 # expose required -std option via pkg-config
59 # See if -Wunknown-warning-option is supported
61 [whether -Wunknown-warning-option is supported])
62 AC_CACHE_VAL([folly_cv_cxx_unknown_warning_option_support], [
63 folly_save_CXXFLAGS="$CXXFLAGS"
64 CXXFLAGS="$CXXFLAGS -Werror=unknown-warning-option"
66 [AC_LANG_PROGRAM([[]], [[]])],
68 # The compiler didn't completely error out on -Werror=unknown-warning-option
69 CXXFLAGS="$CXXFLAGS -Werror=unknown-warning-option -Wthis-is-an-unknown-option-that-should-error"
71 [AC_LANG_PROGRAM([[]], [[]])],
72 [folly_cv_cxx_unknown_warning_option_support=no],
73 [folly_cv_cxx_unknown_warning_option_support=yes])
75 [folly_cv_cxx_unknown_warning_option_support=no])
76 CXXFLAGS="$folly_save_CXXFLAGS"])
77 AC_MSG_RESULT([$folly_cv_cxx_unknown_warning_option_support])
79 # See if -Wshadow-local and -Wshadow-compatible-local are supported
81 [whether -Wshadow-local and -Wshadow-compatible-local are supported])
82 AC_CACHE_VAL([folly_cv_cxx_shadow_local_support], [
83 folly_save_CXXFLAGS="$CXXFLAGS"
84 CXXFLAGS="$CXXFLAGS -Wshadow-local -Wshadow-compatible-local"
85 if test "$folly_cv_cxx_unknown_warning_option_support" = yes; then
86 CXXFLAGS="$CXXFLAGS -Werror=unknown-warning-option"
89 [AC_LANG_PROGRAM([[]], [[]])],
90 [folly_cv_cxx_shadow_local_support=yes],
91 [folly_cv_cxx_shadow_local_support=no])
92 CXXFLAGS="$folly_save_CXXFLAGS"])
93 AC_MSG_RESULT([$folly_cv_cxx_shadow_local_support])
94 if test "$folly_cv_cxx_shadow_local_support" = yes; then
95 AC_DEFINE([HAVE_SHADOW_LOCAL_WARNINGS], [1],
96 [Define if both -Wshadow-local and -Wshadow-compatible-local are supported.])
99 # Checks for glog and gflags
100 # There are no symbols with C linkage, so we do a try-run
101 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
102 [Please install google-gflags library])])
104 [for gflags viability],
105 [folly_cv_prog_cc_gflags],
108 #include <gflags/gflags.h>
109 DEFINE_bool(folly_truthy, true, "Sample truthy flag");
110 DEFINE_bool(folly_falsey, false, "Sample falsey flag");
111 int main(int argc, char** argv) {
112 return (FLAGS_folly_truthy && !FLAGS_folly_falsey) ? 0 : 1;
115 [folly_cv_prog_cc_gflags=yes],
116 [folly_cv_prog_cc_gflags=no]
120 if test "$folly_cv_prog_cc_gflags" != "yes"; then
121 AC_MSG_ERROR(["gflags invalid, see config.log for details"])
123 FB_CHECK_PKG_CONFIG([GFLAGS], [gflags])
125 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
126 [Please install google-glog library])])
128 [for glog viability],
129 [folly_cv_prog_cc_glog],
132 #include <glog/logging.h>
133 int main(int argc, char** argv) {
134 google::InitGoogleLogging(argv[0]);
135 google::ShutdownGoogleLogging();
139 [folly_cv_prog_cc_glog=yes],
140 [folly_cv_prog_cc_glog=no]
144 if test "$folly_cv_prog_cc_glog" != "yes"; then
145 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
147 FB_CHECK_PKG_CONFIG([GLOG], [libglog])
150 [test "x$OPENSSL_INCLUDES" = "x"],
152 AX_CHECK_OPENSSL([], [AC_MSG_ERROR(["Error: libssl required"])])
155 # AX_CHECK_OPENSSL doesn't seem to play nice with builds started
156 # via build/bootstrap-osx-homebrew.sh
157 AC_MSG_WARN(["Using existing OpenSSL flags from environment."])
158 PKG_CXXFLAGS="$PKG_CXXFLAGS $OPENSSL_INCLUDES"
161 FB_CHECK_PKG_CONFIG([OPENSSL], [openssl])
163 # check for boost libs
164 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
165 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
167 AX_BOOST_PROGRAM_OPTIONS
174 # Check for python interpreter
177 # Checks for header files.
179 AC_CHECK_HEADERS([features.h malloc.h bits/functexcept.h bits/c++config.h])
181 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
182 [Couldn't find double-conversion.h, please download from \
183 https://github.com/google/double-conversion/])], [])
184 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
185 [Please install double-conversion library])])
187 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
188 FB_CHECK_PKG_CONFIG([EVENT], [libevent])
190 AC_ARG_WITH([jemalloc], [
191 --with-jemalloc Whether to make folly jemalloc aware
193 AC_CHECK_LIB([jemalloc], [xallocx],[
194 AC_DEFINE([USE_JEMALLOC], [1], [Enable jemalloc])
196 AC_MSG_ERROR([--with-jemalloc requested, but jemalloc not found])
200 # Checks for typedefs, structures, and compiler characteristics.
206 AC_CHECK_TYPE([__int128], [folly_cv_prog_cc_int128=yes],
207 [folly_cv_prog_cc_int128=no])
208 if test "$folly_cv_prog_cc_int128" = "yes"; then
209 AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128])
211 [for __int128 type traits],
212 [folly_cv_prog_cc_int128traits],
215 #include <type_traits>
217 ::std::is_same<::std::make_signed<unsigned __int128>::type, __int128>::value,
218 "signed form of \`unsigned __uint128\` must be \`__int128\`.");
220 [folly_cv_prog_cc_int128traits=yes],
221 [folly_cv_prog_cc_int128traits=no])
223 if test "$folly_cv_prog_cc_int128traits" = "no"; then
224 AC_DEFINE([SUPPLY_MISSING_INT128_TRAITS], [1], [Define if we need the standard integer traits defined for the type `__int128'.])
228 AC_CHECK_TYPES([pthread_spinlock_t])
232 [folly_cv_prog_cc_ifunc],
235 #pragma GCC diagnostic error "-Wattributes"
236 extern "C" void (*test_ifunc(void))() { return 0; }
237 void func() __attribute__((ifunc("test_ifunc")));]
239 [folly_cv_prog_cc_ifunc=yes],
240 [folly_cv_prog_cc_ifunc=no])])
242 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
243 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
247 [for final and override support],
248 [folly_cv_c_final_override],
250 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
251 class D : public C { virtual void g() override {} };]],
252 [folly_cv_c_final_override=yes],
253 [folly_cv_c_final_override=no])])
255 if test "$folly_cv_c_final_override" = "yes"; then
257 override_val=override
264 [FINAL], [$final_val],
265 [Define to "final" if the compiler supports C++11 "final"])
267 [OVERRIDE], [$override_val],
268 [Define to "override" if the compiler supports C++11 "override"])
272 [folly_cv_lib_libcpp],
275 #include <type_traits>
281 [folly_cv_lib_libcpp=yes],
282 [folly_cv_lib_libcpp=no])])
284 if test "$folly_cv_lib_libcpp" = yes; then
285 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
289 [for c++11 atomic support without GNU Atomic library],
290 [folly_cv_lib_libatomic],
295 struct Test { int val; };
300 [folly_cv_lib_libatomic=yes],
301 [folly_cv_lib_libatomic=no])])
303 if test "$folly_cv_lib_libatomic" = no; then
304 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
305 [Please install the GNU Atomic library])])
308 if test "$build_os" = "linux-gnu"; then
309 AC_HAVE_LIBRARY([dl],[],[AC_MSG_ERROR(
310 [Folly depends on libdl])])
314 [for liblinux-vdso support],
315 [folly_cv_lib_liblinux_vdso],
320 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
328 [folly_cv_lib_liblinux_vdso=yes],
329 [folly_cv_lib_liblinux_vdso=no])])
331 if test "$folly_cv_lib_liblinux_vdso" = yes; then
332 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
335 AC_DEFINE([HAVE_PTHREAD], [1], [Define to 1 if pthread is avaliable])
338 [for usable std::is_trivially_copyable],
339 [folly_cv_decl_std_is_trivially_copyable],
342 #include <type_traits>
343 const bool val = std::is_trivially_copyable<bool>::value;]
345 [folly_cv_decl_std_is_trivially_copyable=yes],
346 [folly_cv_decl_std_is_trivially_copyable=no])])
348 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
349 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
350 [Define to 1 if we have a usable std::is_trivially_copyable<T>
356 [folly_cv_decl_gflags_namespace],
359 #include <gflags/gflags.h>
360 void foo() { gflags::GetArgv(); }]
362 [folly_cv_decl_gflags_namespace=gflags],
365 #include <gflags/gflags.h>
366 void foo() { google::GetArgv(); }]
368 [folly_cv_decl_gflags_namespace=google],
369 [folly_cv_decl_gflags_namespace=error])])])
371 if test "$folly_cv_decl_gflags_namespace" = error; then
372 AC_MSG_ERROR([Cannot determine gflags namespace])
375 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
376 [Define to gflags namespace (usually "google" or "gflags")])
377 if test "$folly_cv_decl_gflags_namespace" != gflags; then
378 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
379 [Define to 1 if the gflags namespace is not "gflags"])
383 # Figure out if we support weak symbols. If not, we will link in some null
384 # stubs for functions that would otherwise be weak.
386 [for weak symbol support],
387 [folly_cv_prog_cc_weak_symbols],
390 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
391 int main(int argc, char** argv) {
392 return configure_link_extern_weak_test == nullptr;
394 [folly_cv_prog_cc_weak_symbols="yes"],
395 [folly_cv_prog_cc_weak_symbols="no"])])
397 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
398 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
399 [Define to 1 if the linker supports weak symbols.])
403 # Figure out if we support wchar well
406 [folly_cv_prog_cc_wchar_support],
412 int main(int argc, char** argv) {
413 return wcstol(L"01", nullptr, 10) == 1 ? 0 : 1;
416 [folly_cv_prog_cc_wchar_support=yes],
417 [folly_cv_prog_cc_wchar_support=no])])
419 if test "$folly_cv_prog_cc_wchar_support" = "yes"; then
420 AC_DEFINE([HAVE_WCHAR_SUPPORT], [1], [Define to 1 if the libc supports wchar well])
423 # Figure out whether the architecture supports unaligned accesses
425 [for unaligned access support],
426 [folly_cv_prog_cc_unaligned_access],
429 int main(int argc, char** argv) {
431 unsigned long *ptr = (unsigned long *)(buf + 1);
433 return (*ptr & 0xff) == 0xef ? 0 : 1;
436 [folly_cv_prog_cc_unaligned_access=yes],
437 [folly_cv_prog_cc_unaligned_access=no])])
439 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
440 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
444 [for vsnprintf reporting bad format strings],
445 [folly_cv_prog_vsnprintf_bad_format],
450 int main(int argc, char** argv) {
452 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
454 [folly_cv_prog_vsnprintf_bad_format="yes"],
455 [folly_cv_prog_vsnprintf_bad_format="no"])])
457 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
458 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
459 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
462 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
463 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
464 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
465 [Define to 1 if we have cplus_demangle_v3_callback.])
468 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
469 # want to link with librt if necessary.
470 AC_SEARCH_LIBS([clock_gettime], [rt],
472 [HAVE_CLOCK_GETTIME],
474 [Define to 1 if we support clock_gettime(2).]),
477 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
478 # want to include pthread.h if necessary.
480 [for pthread_atfork support],
481 [folly_cv_prog_cc_pthread_atfork],
485 void func() {pthread_atfork(NULL, NULL, NULL);}]
487 [folly_cv_prog_cc_pthread_atfork=yes],
488 [folly_cv_prog_cc_pthread_atfork=no])])
490 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
491 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
494 # Check for XSI-compatible strerror_r as default implementation
496 [for XSI style strerror_r support],
497 [folly_cv_prog_cc_xsi_strerror_r],
502 int main(int argc, char** argv) {
505 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
509 [folly_cv_prog_cc_xsi_strerror_r=yes],
510 [folly_cv_prog_cc_xsi_strerror_r=no])])
512 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
513 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
517 [for ext/random and __gnu_cxx::sfmt19937],
518 [folly_cv_prog_cc_have_extrandom_sfmt19937],
521 #include <ext/random>
522 int main(int argc, char** argv) {
523 __gnu_cxx::sfmt19937 rng;
527 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
528 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
531 [for VLA (variable-length array) support],
532 [folly_cv_prog_cc_have_vla],
535 int main(int argc, char** argv) {
536 unsigned size = argc;
541 [folly_cv_prog_cc_have_vla=yes],
542 [folly_cv_prog_cc_have_vla=no])])
544 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
548 [Define to 1 if the compiler has VLA (variable-length array) support,
549 otherwise define to 0])
552 [for variable template support],
553 [folly_cv_prog_cc_have_variable_templates],
556 template <class> constexpr bool g = true;
559 [folly_cv_prog_cc_have_variable_templates=yes],
560 [folly_cv_prog_cc_have_variable_templates=no])])
563 [HAVE_VARIABLE_TEMPLATES],
564 [test "x${folly_cv_prog_cc_have_variable_templates}" = "xyes"],
565 [Define to 1 if the compiler supports variable templates])
567 # Checks for library functions.
568 AC_CHECK_FUNCS([malloc_size \
576 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
577 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
578 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
579 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
580 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [ZSTD_compressStream]))
581 AC_CHECK_HEADER([bzlib.h], AC_CHECK_LIB([bz2], [main]))
582 AC_CHECK_HEADER([linux/membarrier.h], AC_DEFINE([HAVE_LINUX_MEMBARRIER_H], [1], [Define to 1 if membarrier.h is available]))
584 AC_ARG_ENABLE([follytestmain],
585 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
586 [use_follytestmain=${enableval}], [use_follytestmain=yes])
588 # libdwarf used to install in /usr/include, now installs in /usr/include/libdwarf.
590 AC_CHECK_HEADERS([libdwarf/dwarf.h dwarf.h], [have_libdwarf=yes])
592 AC_ARG_ENABLE([mobile],
593 AS_HELP_STRING([--enable-mobile],
594 [enables using main function from folly for tests]),
595 [mobile=${enableval}], [mobile=no])
596 AS_IF([test "x${mobile}" = "xyes"], [
597 AC_DEFINE([MOBILE], [1],
598 [Define to 1 for compiler guards for mobile targets.])
601 AC_ARG_ENABLE([exception-tracer],
602 AS_HELP_STRING([--enable-exception-tracer], [enables building exception tracer]),
603 [build_exception_tracer=${enableval}], [build_exception_tracer=no])
605 AC_ARG_ENABLE([symbolizer],
606 AS_HELP_STRING([--enable-symbolizer], [try to build symbolizer if possible]),
607 [folly_try_use_symbolizer=${enableval}], [folly_try_use_symbolizer=yes])
609 folly_use_symbolizer=no
610 if test "$folly_try_use_symbolizer" = yes; then
611 if test "$build_os" = "linux-gnu" && test "$have_libdwarf" = yes; then
614 AC_CHECK_LIB([unwind], [backtrace], [folly_use_symbolizer=yes]),
618 if test "$folly_use_symbolizer" = yes; then
619 AC_DEFINE([USE_SYMBOLIZER], [1], [Define to 1 if we should use the symbolizer in init])
623 # Include directory that contains "folly" so #include <folly/Foo.h> works
624 AM_CPPFLAGS='-I$(top_srcdir)/..'
625 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS $OPENSSL_INCLUDES"
626 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
627 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
628 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
629 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
631 AM_LDFLAGS="$AM_LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LIBS"
633 AC_SUBST([AM_CPPFLAGS])
634 AC_SUBST([AM_LDFLAGS])
636 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
637 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
638 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
639 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
640 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
641 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
642 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
643 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
644 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
645 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
646 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
647 AM_CONDITIONAL([HAVE_LIBDWARF], [test "x${have_libdwarf}" = "xyes"])
648 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
649 AM_CONDITIONAL([EXCEPTION_TRACER], [test "x${build_exception_tracer}" = "xyes"])
650 AM_CONDITIONAL([USE_SYMBOLIZER], [test "x${folly_use_symbolizer}" = "xyes"])
652 # remove pkg-config deps from dependent libraries
653 # (at least for pkg-config file purposes)
654 FB_FILTER_PKG_LIBS([$AM_LDFLAGS $LIBS])
657 AC_CONFIG_FILES([Makefile
662 test/function_benchmark/Makefile
663 experimental/Makefile
664 experimental/io/test/Makefile
665 experimental/logging/Makefile
666 experimental/logging/example/Makefile
667 experimental/symbolizer/Makefile
669 stats/test/Makefile])
671 AM_COND_IF([EXCEPTION_TRACER],
672 [AC_CONFIG_FILES([experimental/exception_tracer/Makefile])])