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])
31 AX_CONFIG_FEATURE_DEFAULT_DISABLED
34 [supports deprecated associative containers (hash_map/hash_set)],
35 [HAVE_DEPRECATED_ASSOC],
36 [Define if you want to support deprecated associative containers])
43 # Checks for programs.
47 AC_CXX_COMPILE_STDCXX_1Y
49 # Be sure to add any -std option to CXXFLAGS before we invoke any
50 # AC_COMPILE_IFELSE() or similar macros. Any such macros that are invoked
51 # before we update CXXFLAGS will not be run with the same options that we use
52 # during the real build.
54 if test "x$ac_cv_cxx_compile_cxx1y_cxx" = xyes; then
57 if test "x$ac_cv_cxx_compile_cxx1y_gxx" = xyes; then
61 CXXFLAGS="$STD $CXXFLAGS"
63 # expose required -std option via pkg-config
66 # See if -Wshadow-local and -Wshadow-compatible-local are supported
68 [whether -Wshadow-local and -Wshadow-compatible-local are supported])
69 AC_CACHE_VAL([folly_cv_cxx_shadow_local_support], [
70 folly_save_CXXFLAGS="$CXXFLAGS"
71 CXXFLAGS="$CXXFLAGS -Wshadow-local -Wshadow-compatible-local"
73 [AC_LANG_PROGRAM([[]], [[]])],
74 [folly_cv_cxx_shadow_local_support=yes],
75 [folly_cv_cxx_shadow_local_support=no])
76 CXXFLAGS="$folly_save_CXXFLAGS"])
77 AC_MSG_RESULT([$folly_cv_cxx_shadow_local_support])
78 if test "$folly_cv_cxx_shadow_local_support" = yes; then
79 AC_DEFINE([HAVE_SHADOW_LOCAL_WARNINGS], [1],
80 [Define if both -Wshadow-local and -Wshadow-compatible-local are supported.])
83 # Checks for glog and gflags
84 # There are no symbols with C linkage, so we do a try-run
85 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
86 [Please install google-gflags library])])
88 [for gflags viability],
89 [folly_cv_prog_cc_gflags],
92 #include <gflags/gflags.h>
93 DEFINE_bool(folly_truthy, true, "Sample truthy flag");
94 DEFINE_bool(folly_falsey, false, "Sample falsey flag");
95 int main(int argc, char** argv) {
96 return (FLAGS_folly_truthy && !FLAGS_folly_falsey) ? 0 : 1;
99 [folly_cv_prog_cc_gflags=yes],
100 [folly_cv_prog_cc_gflags=no]
104 if test "$folly_cv_prog_cc_gflags" != "yes"; then
105 AC_MSG_ERROR(["libgflags invalid, see config.log for details"])
107 FB_CHECK_PKG_CONFIG([GFLAGS], [libgflags])
109 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
110 [Please install google-glog library])])
112 [for glog viability],
113 [folly_cv_prog_cc_glog],
116 #include <glog/logging.h>
117 int main(int argc, char** argv) {
118 google::InitGoogleLogging(argv[0]);
119 google::ShutdownGoogleLogging();
123 [folly_cv_prog_cc_glog=yes],
124 [folly_cv_prog_cc_glog=no]
128 if test "$folly_cv_prog_cc_glog" != "yes"; then
129 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
131 FB_CHECK_PKG_CONFIG([GLOG], [libglog])
134 [AC_MSG_ERROR(["Error: libssl required"])])
135 FB_CHECK_PKG_CONFIG([OPENSSL], [openssl])
137 # check for boost libs
138 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
139 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
141 AX_BOOST_PROGRAM_OPTIONS
148 # Check for python interpreter
151 # Checks for header files.
153 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h sched.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h byteswap.h bits/functexcept.h bits/c++config.h])
155 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
156 [Couldn't find double-conversion.h, please download from \
157 https://github.com/google/double-conversion/])], [])
158 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
159 [Please install double-conversion library])])
161 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
162 FB_CHECK_PKG_CONFIG([EVENT], [libevent])
164 AC_CHECK_LIB([jemalloc], [xallocx])
166 # Checks for typedefs, structures, and compiler characteristics.
173 AC_CHECK_TYPE([__int128], [folly_cv_prog_cc_int128=yes],
174 [folly_cv_prog_cc_int128=no])
175 if test "$folly_cv_prog_cc_int128" = "yes"; then
176 AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128])
178 [for __int128 type traits],
179 [folly_cv_prog_cc_int128traits],
182 #include <type_traits>
184 ::std::is_same<::std::make_signed<unsigned __int128>::type, __int128>::value,
185 "signed form of `unsigned __uint128` must be `__int128`.");
187 [folly_cv_prog_cc_int128traits=yes],
188 [folly_cv_prog_cc_int128traits=no])
190 if test "$folly_cv_prog_cc_int128traits" = "no"; then
191 AC_DEFINE([SUPPLY_MISSING_INT128_TRAITS], [1], [Define if we need the standard integer traits defined for the type `__int128'.])
195 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
199 [folly_cv_prog_cc_ifunc],
202 #pragma GCC diagnostic error "-Wattributes"
203 extern "C" void (*test_ifunc(void))() { return 0; }
204 void func() __attribute__((ifunc("test_ifunc")));]
206 [folly_cv_prog_cc_ifunc=yes],
207 [folly_cv_prog_cc_ifunc=no])])
209 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
210 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
214 [for final and override support],
215 [folly_cv_c_final_override],
217 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
218 class D : public C { virtual void g() override {} };]],
219 [folly_cv_c_final_override=yes],
220 [folly_cv_c_final_override=no])])
222 if test "$folly_cv_c_final_override" = "yes"; then
224 override_val=override
231 [FINAL], [$final_val],
232 [Define to "final" if the compiler supports C++11 "final"])
234 [OVERRIDE], [$override_val],
235 [Define to "override" if the compiler supports C++11 "override"])
238 [for std::this_thread::sleep_for],
239 [folly_cv_func_this_thread_sleep_for],
244 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
245 [folly_cv_func_this_thread_sleep_for=yes],
246 [folly_cv_func_this_thread_sleep_for=no])])
248 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
249 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
250 [Define to 1 if std::this_thread::sleep_for() is defined.])
254 [for constexpr strlen],
255 [folly_cv_func_constexpr_strlen],
259 static constexpr int val = strlen("foo");]],
260 [folly_cv_func_constexpr_strlen=yes],
261 [folly_cv_func_constexpr_strlen=no])])
263 if test "$folly_cv_func_constexpr_strlen" = yes; then
264 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
265 [Define to 1 if strlen(3) is constexpr.])
270 [folly_cv_lib_libcpp],
273 #include <type_traits>
279 [folly_cv_lib_libcpp=yes],
280 [folly_cv_lib_libcpp=no])])
282 if test "$folly_cv_lib_libcpp" = yes; then
283 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
287 [for c++11 atomic support without GNU Atomic library],
288 [folly_cv_lib_libatomic],
293 struct Test { int val; };
298 [folly_cv_lib_libatomic=yes],
299 [folly_cv_lib_libatomic=no])])
301 if test "$folly_cv_lib_libatomic" = no; then
302 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
303 [Please install the GNU Atomic library])])
307 [for liblinux-vdso support],
308 [folly_cv_lib_liblinux_vdso],
313 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
321 [folly_cv_lib_liblinux_vdso=yes],
322 [folly_cv_lib_liblinux_vdso=no])])
324 if test "$folly_cv_lib_liblinux_vdso" = yes; then
325 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
329 [for usable std::is_trivially_copyable],
330 [folly_cv_decl_std_is_trivially_copyable],
333 #include <type_traits>
334 const bool val = std::is_trivially_copyable<bool>::value;]
336 [folly_cv_decl_std_is_trivially_copyable=yes],
337 [folly_cv_decl_std_is_trivially_copyable=no])])
339 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
340 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
341 [Define to 1 if we have a usable std::is_trivially_copyable<T>
347 [folly_cv_decl_gflags_namespace],
350 #include <gflags/gflags.h>
351 void foo() { gflags::GetArgv(); }]
353 [folly_cv_decl_gflags_namespace=gflags],
356 #include <gflags/gflags.h>
357 void foo() { google::GetArgv(); }]
359 [folly_cv_decl_gflags_namespace=google],
360 [folly_cv_decl_gflags_namespace=error])])])
362 if test "$folly_cv_decl_gflags_namespace" = error; then
363 AC_MSG_ERROR([Cannot determine gflags namespace])
366 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
367 [Define to gflags namespace (usually "google" or "gflags")])
368 if test "$folly_cv_decl_gflags_namespace" != gflags; then
369 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
370 [Define to 1 if the gflags namespace is not "gflags"])
374 # Figure out if we support weak symbols. If not, we will link in some null
375 # stubs for functions that would otherwise be weak.
377 [for weak symbol support],
378 [folly_cv_prog_cc_weak_symbols],
381 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
382 int main(int argc, char** argv) {
383 return configure_link_extern_weak_test == nullptr;
385 [folly_cv_prog_cc_weak_symbols="yes"],
386 [folly_cv_prog_cc_weak_symbols="no"])])
388 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
389 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
390 [Define to 1 if the linker supports weak symbols.])
394 # Figure out if we support wchar well
397 [folly_cv_prog_cc_wchar_support],
403 int main(int argc, char** argv) {
404 return wcstol(L"01", nullptr, 10) == 1 ? 0 : 1;
407 [folly_cv_prog_cc_wchar_support=yes],
408 [folly_cv_prog_cc_wchar_support=no])])
410 if test "$folly_cv_prog_cc_wchar_support" = "yes"; then
411 AC_DEFINE([HAVE_WCHAR_SUPPORT], [1], [Define to 1 if the libc supports wchar well])
414 # Figure out whether the architecture supports unaligned accesses
416 [for unaligned access support],
417 [folly_cv_prog_cc_unaligned_access],
420 int main(int argc, char** argv) {
422 unsigned long *ptr = (unsigned long *)(buf + 1);
424 return (*ptr & 0xff) == 0xef ? 0 : 1;
427 [folly_cv_prog_cc_unaligned_access=yes],
428 [folly_cv_prog_cc_unaligned_access=no])])
430 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
431 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
435 [for vsnprintf reporting bad format strings],
436 [folly_cv_prog_vsnprintf_bad_format],
441 int main(int argc, char** argv) {
443 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
445 [folly_cv_prog_vsnprintf_bad_format="yes"],
446 [folly_cv_prog_vsnprintf_bad_format="no"])])
448 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
449 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
450 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
453 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
454 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
455 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
456 [Define to 1 if we have cplus_demangle_v3_callback.])
459 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
460 # want to link with librt if necessary.
461 AC_SEARCH_LIBS([clock_gettime], [rt],
463 [HAVE_CLOCK_GETTIME],
465 [Define to 1 if we support clock_gettime(2).]),
468 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
469 # want to include pthread.h if necessary.
471 [for pthread_atfork support],
472 [folly_cv_prog_cc_pthread_atfork],
476 void func() {pthread_atfork(NULL, NULL, NULL);}]
478 [folly_cv_prog_cc_pthread_atfork=yes],
479 [folly_cv_prog_cc_pthread_atfork=no])])
481 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
482 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
485 # Check for XSI-compatible strerror_r as default implementation
487 [for XSI style strerror_r support],
488 [folly_cv_prog_cc_xsi_strerror_r],
493 int main(int argc, char** argv) {
496 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
500 [folly_cv_prog_cc_xsi_strerror_r=yes],
501 [folly_cv_prog_cc_xsi_strerror_r=no])])
503 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
504 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
508 [for ext/random and __gnu_cxx::sfmt19937],
509 [folly_cv_prog_cc_have_extrandom_sfmt19937],
512 #include <ext/random>
513 int main(int argc, char** argv) {
514 __gnu_cxx::sfmt19937 rng;
518 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
519 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
522 [for VLA (variable-length array) support],
523 [folly_cv_prog_cc_have_vla],
526 int main(int argc, char** argv) {
527 unsigned size = argc;
532 [folly_cv_prog_cc_have_vla=yes],
533 [folly_cv_prog_cc_have_vla=no])])
535 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
539 [Define to 1 if the compiler has VLA (variable-length array) support,
540 otherwise define to 0])
542 # Checks for library functions.
543 AC_CHECK_FUNCS([getdelim \
558 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
559 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
560 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
561 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
562 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [main]))
563 AC_CHECK_HEADER([linux/membarrier.h], AC_DEFINE([HAVE_LINUX_MEMBARRIER_H], [1], [Define to 1 if membarrier.h is available]))
565 AC_ARG_ENABLE([follytestmain],
566 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
567 [follytestmain=${enableval}], [follytestmain=no])
569 use_follytestmain=yes
570 # libdwarf used to install in /usr/include, now installs in /usr/include/libdwarf.
571 AC_CHECK_HEADERS([libdwarf/dwarf.h dwarf.h], [break])
572 # Check whether we have both the library and the header
574 AS_IF([test "x${ac_cv_header_libdwarf_dwarf_h}" = xyes], [have_libdwarf=yes])
575 AS_IF([test "x${ac_cv_header_dwarf_h}" = xyes], [have_libdwarf=yes])
576 if test "x${follytestmain}" = "xyes"; then
577 AS_IF([test "x${have_libdwarf}" = xno], [AC_MSG_ERROR([Please install libdwarf development library and headers])])
578 AC_CHECK_HEADERS([elf.h],, AC_MSG_ERROR([Please install libelf development package]))
579 AC_CHECK_HEADERS([libunwind.h],, AC_MSG_ERROR([Please install libunwind development package]))
581 AS_IF([test "x${have_libdwarf}" = xno],, [use_follytestmain=no])
582 AC_CHECK_HEADERS([elf.h],, [use_follytestmain=no])
583 AC_CHECK_HEADERS([libunwind.h],, [use_follytestmain=no])
586 AC_ARG_ENABLE([mobile],
587 AS_HELP_STRING([--enable-mobile],
588 [enables using main function from folly for tests]),
589 [mobile=${enableval}], [mobile=no])
590 AS_IF([test "x${mobile}" = "xyes"], [
591 AC_DEFINE([MOBILE], [1],
592 [Define to 1 for compiler guards for mobile targets.])
595 # Include directory that contains "folly" so #include <folly/Foo.h> works
596 AM_CPPFLAGS='-I$(top_srcdir)/..'
597 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
598 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
599 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
600 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
601 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
603 AM_LDFLAGS="$AM_LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LIBS"
605 AC_SUBST([AM_CPPFLAGS])
606 AC_SUBST([AM_LDFLAGS])
608 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
609 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
610 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
611 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
612 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
613 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
614 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
615 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
616 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
617 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
618 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
619 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
621 # remove pkg-config deps from dependent libraries
622 # (at least for pkg-config file purposes)
623 FB_FILTER_PKG_LIBS([$AM_LDFLAGS $LIBS])
626 AC_CONFIG_FILES([Makefile
629 test/function_benchmark/Makefile
630 experimental/Makefile
631 experimental/symbolizer/Makefile