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 $CXXFLAGS"
63 # expose required -std option via pkg-config
66 # Checks for glog and gflags
67 # There are no symbols with C linkage, so we do a try-run
68 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
69 [Please install google-gflags library])])
71 [for gflags viability],
72 [folly_cv_prog_cc_gflags],
75 #include <gflags/gflags.h>
76 DEFINE_bool(folly_truthy, true, "Sample truthy flag");
77 DEFINE_bool(folly_falsey, false, "Sample falsey flag");
78 int main(int argc, char** argv) {
79 return (FLAGS_folly_truthy && !FLAGS_folly_falsey) ? 0 : 1;
82 [folly_cv_prog_cc_gflags=yes],
83 [folly_cv_prog_cc_gflags=no]
87 if test "$folly_cv_prog_cc_gflags" != "yes"; then
88 AC_MSG_ERROR(["libgflags invalid, see config.log for details"])
90 FB_CHECK_PKG_CONFIG([GFLAGS], [libgflags])
92 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
93 [Please install google-glog library])])
96 [folly_cv_prog_cc_glog],
99 #include <glog/logging.h>
100 int main(int argc, char** argv) {
101 google::InitGoogleLogging(argv[0]);
102 google::ShutdownGoogleLogging();
106 [folly_cv_prog_cc_glog=yes],
107 [folly_cv_prog_cc_glog=no]
111 if test "$folly_cv_prog_cc_glog" != "yes"; then
112 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
114 FB_CHECK_PKG_CONFIG([GLOG], [libglog])
117 [AC_MSG_ERROR(["Error: libssl required"])])
118 FB_CHECK_PKG_CONFIG([OPENSSL], [openssl])
120 # check for boost libs
121 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
122 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
124 AX_BOOST_PROGRAM_OPTIONS
131 # Check for python interpreter
134 # Checks for header files.
136 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h sched.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h byteswap.h bits/functexcept.h bits/c++config.h])
138 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
139 [Couldn't find double-conversion.h, please download from \
140 https://github.com/google/double-conversion/])], [])
141 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
142 [Please install double-conversion library])])
144 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
145 FB_CHECK_PKG_CONFIG([EVENT], [libevent])
147 AC_CHECK_LIB([jemalloc], [xallocx])
149 # Checks for typedefs, structures, and compiler characteristics.
156 AC_CHECK_TYPE([__int128], [folly_cv_prog_cc_int128=yes],
157 [folly_cv_prog_cc_int128=no])
158 if test "$folly_cv_prog_cc_int128" = "yes"; then
159 AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128])
161 [for __int128 type traits],
162 [folly_cv_prog_cc_int128traits],
165 #include <type_traits>
167 ::std::is_same<::std::make_signed<unsigned __int128>::type, __int128>::value,
168 "signed form of `unsigned __uint128` must be `__int128`.");
170 [folly_cv_prog_cc_int128traits=yes],
171 [folly_cv_prog_cc_int128traits=no])
173 if test "$folly_cv_prog_cc_int128traits" = "no"; then
174 AC_DEFINE([SUPPLY_MISSING_INT128_TRAITS], [1], [Define if we need the standard integer traits defined for the type `__int128'.])
178 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
182 [folly_cv_prog_cc_ifunc],
185 #pragma GCC diagnostic error "-Wattributes"
186 extern "C" void (*test_ifunc(void))() { return 0; }
187 void func() __attribute__((ifunc("test_ifunc")));]
189 [folly_cv_prog_cc_ifunc=yes],
190 [folly_cv_prog_cc_ifunc=no])])
192 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
193 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
197 [for final and override support],
198 [folly_cv_c_final_override],
200 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
201 class D : public C { virtual void g() override {} };]],
202 [folly_cv_c_final_override=yes],
203 [folly_cv_c_final_override=no])])
205 if test "$folly_cv_c_final_override" = "yes"; then
207 override_val=override
214 [FINAL], [$final_val],
215 [Define to "final" if the compiler supports C++11 "final"])
217 [OVERRIDE], [$override_val],
218 [Define to "override" if the compiler supports C++11 "override"])
221 [for std::this_thread::sleep_for],
222 [folly_cv_func_this_thread_sleep_for],
227 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
228 [folly_cv_func_this_thread_sleep_for=yes],
229 [folly_cv_func_this_thread_sleep_for=no])])
231 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
232 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
233 [Define to 1 if std::this_thread::sleep_for() is defined.])
237 [for constexpr strlen],
238 [folly_cv_func_constexpr_strlen],
242 static constexpr int val = strlen("foo");]],
243 [folly_cv_func_constexpr_strlen=yes],
244 [folly_cv_func_constexpr_strlen=no])])
246 if test "$folly_cv_func_constexpr_strlen" = yes; then
247 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
248 [Define to 1 if strlen(3) is constexpr.])
253 [folly_cv_lib_libcpp],
256 #include <type_traits>
262 [folly_cv_lib_libcpp=yes],
263 [folly_cv_lib_libcpp=no])])
265 if test "$folly_cv_lib_libcpp" = yes; then
266 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
270 [for c++11 atomic support without GNU Atomic library],
271 [folly_cv_lib_libatomic],
276 struct Test { int val; };
281 [folly_cv_lib_libatomic=yes],
282 [folly_cv_lib_libatomic=no])])
284 if test "$folly_cv_lib_libatomic" = no; then
285 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
286 [Please install the GNU Atomic library])])
290 [for liblinux-vdso support],
291 [folly_cv_lib_liblinux_vdso],
296 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
304 [folly_cv_lib_liblinux_vdso=yes],
305 [folly_cv_lib_liblinux_vdso=no])])
307 if test "$folly_cv_lib_liblinux_vdso" = yes; then
308 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
312 [for usable std::is_trivially_copyable],
313 [folly_cv_decl_std_is_trivially_copyable],
316 #include <type_traits>
317 const bool val = std::is_trivially_copyable<bool>::value;]
319 [folly_cv_decl_std_is_trivially_copyable=yes],
320 [folly_cv_decl_std_is_trivially_copyable=no])])
322 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
323 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
324 [Define to 1 if we have a usable std::is_trivially_copyable<T>
330 [folly_cv_decl_gflags_namespace],
333 #include <gflags/gflags.h>
334 void foo() { gflags::GetArgv(); }]
336 [folly_cv_decl_gflags_namespace=gflags],
339 #include <gflags/gflags.h>
340 void foo() { google::GetArgv(); }]
342 [folly_cv_decl_gflags_namespace=google],
343 [folly_cv_decl_gflags_namespace=error])])])
345 if test "$folly_cv_decl_gflags_namespace" = error; then
346 AC_MSG_ERROR([Cannot determine gflags namespace])
349 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
350 [Define to gflags namespace (usually "google" or "gflags")])
351 if test "$folly_cv_decl_gflags_namespace" != gflags; then
352 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
353 [Define to 1 if the gflags namespace is not "gflags"])
357 # Figure out if we support weak symbols. If not, we will link in some null
358 # stubs for functions that would otherwise be weak.
360 [for weak symbol support],
361 [folly_cv_prog_cc_weak_symbols],
364 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
365 int main(int argc, char** argv) {
366 return configure_link_extern_weak_test == nullptr;
368 [folly_cv_prog_cc_weak_symbols="yes"],
369 [folly_cv_prog_cc_weak_symbols="no"])])
371 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
372 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
373 [Define to 1 if the linker supports weak symbols.])
377 # Figure out if we support wchar well
380 [folly_cv_prog_cc_wchar_support],
386 int main(int argc, char** argv) {
387 return wcstol(L"01", nullptr, 10) == 1 ? 0 : 1;
390 [folly_cv_prog_cc_wchar_support=yes],
391 [folly_cv_prog_cc_wchar_support=no])])
393 if test "$folly_cv_prog_cc_wchar_support" = "yes"; then
394 AC_DEFINE([HAVE_WCHAR_SUPPORT], [1], [Define to 1 if the libc supports wchar well])
397 # Figure out whether the architecture supports unaligned accesses
399 [for unaligned access support],
400 [folly_cv_prog_cc_unaligned_access],
403 int main(int argc, char** argv) {
405 unsigned long *ptr = (unsigned long *)(buf + 1);
407 return (*ptr & 0xff) == 0xef ? 0 : 1;
410 [folly_cv_prog_cc_unaligned_access=yes],
411 [folly_cv_prog_cc_unaligned_access=no])])
413 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
414 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
418 [for vsnprintf reporting bad format strings],
419 [folly_cv_prog_vsnprintf_bad_format],
424 int main(int argc, char** argv) {
426 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
428 [folly_cv_prog_vsnprintf_bad_format="yes"],
429 [folly_cv_prog_vsnprintf_bad_format="no"])])
431 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
432 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
433 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
436 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
437 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
438 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
439 [Define to 1 if we have cplus_demangle_v3_callback.])
442 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
443 # want to link with librt if necessary.
444 AC_SEARCH_LIBS([clock_gettime], [rt],
446 [HAVE_CLOCK_GETTIME],
448 [Define to 1 if we support clock_gettime(2).]),
451 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
452 # want to include pthread.h if necessary.
454 [for pthread_atfork support],
455 [folly_cv_prog_cc_pthread_atfork],
459 void func() {pthread_atfork(NULL, NULL, NULL);}]
461 [folly_cv_prog_cc_pthread_atfork=yes],
462 [folly_cv_prog_cc_pthread_atfork=no])])
464 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
465 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
468 # Check for XSI-compatible strerror_r as default implementation
470 [for XSI style strerror_r support],
471 [folly_cv_prog_cc_xsi_strerror_r],
476 int main(int argc, char** argv) {
479 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
483 [folly_cv_prog_cc_xsi_strerror_r=yes],
484 [folly_cv_prog_cc_xsi_strerror_r=no])])
486 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
487 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
491 [for ext/random and __gnu_cxx::sfmt19937],
492 [folly_cv_prog_cc_have_extrandom_sfmt19937],
495 #include <ext/random>
496 int main(int argc, char** argv) {
497 __gnu_cxx::sfmt19937 rng;
501 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
502 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
505 [for VLA (variable-length array) support],
506 [folly_cv_prog_cc_have_vla],
509 int main(int argc, char** argv) {
510 unsigned size = argc;
515 [folly_cv_prog_cc_have_vla=yes],
516 [folly_cv_prog_cc_have_vla=no])])
518 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
522 [Define to 1 if the compiler has VLA (variable-length array) support,
523 otherwise define to 0])
525 # Checks for library functions.
526 AC_CHECK_FUNCS([getdelim \
541 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
542 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
543 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
544 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
545 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [main]))
546 AC_CHECK_HEADER([linux/membarrier.h], AC_DEFINE([HAVE_LINUX_MEMBARRIER_H], [1], [Define to 1 if membarrier.h is available]))
548 AC_ARG_ENABLE([follytestmain],
549 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
550 [follytestmain=${enableval}], [follytestmain=no])
552 use_follytestmain=yes
553 # libdwarf used to install in /usr/include, now installs in /usr/include/libdwarf.
554 AC_SEARCH_LIBS([dwarf_init], [dwarf])
555 AC_CHECK_HEADERS([libdwarf/dwarf.h dwarf.h], [break])
556 # Check whether we have both the library and the header
558 AS_IF([test "x${ac_cv_search_dwarf_init}" != xno && test "x${ac_cv_header_libdwarf_dwarf_h}" = xyes], [have_libdwarf=yes])
559 AS_IF([test "x${ac_cv_search_dwarf_init}" != xno && test "x${ac_cv_header_dwarf_h}" = xyes], [have_libdwarf=yes])
560 if test "x${follytestmain}" = "xyes"; then
561 AS_IF([test "x${have_libdwarf}" = xno], [AC_MSG_ERROR([Please install libdwarf development library and headers])])
562 AC_CHECK_HEADERS([elf.h],, AC_MSG_ERROR([Please install libelf development package]))
563 AC_CHECK_HEADERS([libunwind.h],, AC_MSG_ERROR([Please install libunwind development package]))
565 AS_IF([test "x${have_libdwarf}" = xno],, [use_follytestmain=no])
566 AC_CHECK_HEADERS([elf.h],, [use_follytestmain=no])
567 AC_CHECK_HEADERS([libunwind.h],, [use_follytestmain=no])
570 AC_ARG_ENABLE([mobile],
571 AS_HELP_STRING([--enable-mobile],
572 [enables using main function from folly for tests]),
573 [mobile=${enableval}], [mobile=no])
574 AS_IF([test "x${mobile}" = "xyes"], [
575 AC_DEFINE([MOBILE], [1],
576 [Define to 1 for compiler guards for mobile targets.])
579 # Include directory that contains "folly" so #include <folly/Foo.h> works
580 AM_CPPFLAGS='-I$(top_srcdir)/..'
581 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
582 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
583 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
584 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
585 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
587 AM_LDFLAGS="$AM_LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LIBS"
589 AC_SUBST([AM_CPPFLAGS])
590 AC_SUBST([AM_LDFLAGS])
592 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
593 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
594 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
595 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
596 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
597 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
598 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
599 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
600 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
601 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
602 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
603 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
605 # remove pkg-config deps from dependent libraries
606 # (at least for pkg-config file purposes)
607 FB_FILTER_PKG_LIBS([$AM_LDFLAGS $LIBS])
610 AC_CONFIG_FILES([Makefile
613 test/function_benchmark/Makefile
614 experimental/Makefile
615 experimental/symbolizer/Makefile