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 "$folly_cv_prog_cc_glog" != "yes"; then
112 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
114 FB_CHECK_PKG_CONFIG([GLOG], [libglog])
119 [AC_MSG_ERROR(["Error: libssl required"])])
120 FB_CHECK_PKG_CONFIG([OPENSSL], [openssl])
122 # check for boost libs
123 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
124 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
126 AX_BOOST_PROGRAM_OPTIONS
133 # Check for python interpreter
136 # Checks for header files.
138 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h sched.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h byteswap.h bits/functexcept.h bits/c++config.h])
140 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
141 [Couldn't find double-conversion.h, please download from \
142 https://github.com/google/double-conversion/])], [])
143 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
144 [Please install double-conversion library])])
146 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
147 FB_CHECK_PKG_CONFIG([EVENT], [libevent])
149 AC_CHECK_LIB([jemalloc], [xallocx])
151 # Checks for typedefs, structures, and compiler characteristics.
158 AC_CHECK_TYPE([__int128], AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128]))
159 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
163 [folly_cv_prog_cc_ifunc],
166 #pragma GCC diagnostic error "-Wattributes"
167 extern "C" void (*test_ifunc(void))() { return 0; }
168 void func() __attribute__((ifunc("test_ifunc")));]
170 [folly_cv_prog_cc_ifunc=yes],
171 [folly_cv_prog_cc_ifunc=no])])
173 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
174 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
178 [for final and override support],
179 [folly_cv_c_final_override],
181 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
182 class D : public C { virtual void g() override {} };]],
183 [folly_cv_c_final_override=yes],
184 [folly_cv_c_final_override=no])])
186 if test "$folly_cv_c_final_override" = "yes"; then
188 override_val=override
195 [FINAL], [$final_val],
196 [Define to "final" if the compiler supports C++11 "final"])
198 [OVERRIDE], [$override_val],
199 [Define to "override" if the compiler supports C++11 "override"])
202 [for std::this_thread::sleep_for],
203 [folly_cv_func_this_thread_sleep_for],
208 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
209 [folly_cv_func_this_thread_sleep_for=yes],
210 [folly_cv_func_this_thread_sleep_for=no])])
212 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
213 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
214 [Define to 1 if std::this_thread::sleep_for() is defined.])
218 [for constexpr strlen],
219 [folly_cv_func_constexpr_strlen],
223 static constexpr int val = strlen("foo");]],
224 [folly_cv_func_constexpr_strlen=yes],
225 [folly_cv_func_constexpr_strlen=no])])
227 if test "$folly_cv_func_constexpr_strlen" = yes; then
228 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
229 [Define to 1 if strlen(3) is constexpr.])
234 [folly_cv_lib_libcpp],
237 #include <type_traits>
243 [folly_cv_lib_libcpp=yes],
244 [folly_cv_lib_libcpp=no])])
246 if test "$folly_cv_lib_libcpp" = yes; then
247 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
251 [for c++11 atomic support without GNU Atomic library],
252 [folly_cv_lib_libatomic],
257 struct Test { int val; };
262 [folly_cv_lib_libatomic=yes],
263 [folly_cv_lib_libatomic=no])])
265 if test "$folly_cv_lib_libatomic" = no; then
266 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
267 [Please install the GNU Atomic library])])
271 [for liblinux-vdso support],
272 [folly_cv_lib_liblinux_vdso],
277 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
285 [folly_cv_lib_liblinux_vdso=yes],
286 [folly_cv_lib_liblinux_vdso=no])])
288 if test "$folly_cv_lib_liblinux_vdso" = yes; then
289 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
293 [for usable std::is_trivially_copyable],
294 [folly_cv_decl_std_is_trivially_copyable],
297 #include <type_traits>
298 const bool val = std::is_trivially_copyable<bool>::value;]
300 [folly_cv_decl_std_is_trivially_copyable=yes],
301 [folly_cv_decl_std_is_trivially_copyable=no])])
303 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
304 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
305 [Define to 1 if we have a usable std::is_trivially_copyable<T>
311 [folly_cv_decl_gflags_namespace],
314 #include <gflags/gflags.h>
315 void foo() { gflags::GetArgv(); }]
317 [folly_cv_decl_gflags_namespace=gflags],
320 #include <gflags/gflags.h>
321 void foo() { google::GetArgv(); }]
323 [folly_cv_decl_gflags_namespace=google],
324 [folly_cv_decl_gflags_namespace=error])])])
326 if test "$folly_cv_decl_gflags_namespace" = error; then
327 AC_MSG_ERROR([Cannot determine gflags namespace])
330 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
331 [Define to gflags namespace (usually "google" or "gflags")])
332 if test "$folly_cv_decl_gflags_namespace" != gflags; then
333 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
334 [Define to 1 if the gflags namespace is not "gflags"])
338 # Figure out if we support weak symbols. If not, we will link in some null
339 # stubs for functions that would otherwise be weak.
341 [for weak symbol support],
342 [folly_cv_prog_cc_weak_symbols],
345 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
346 int main(int argc, char** argv) {
347 return configure_link_extern_weak_test == nullptr;
349 [folly_cv_prog_cc_weak_symbols="yes"],
350 [folly_cv_prog_cc_weak_symbols="no"])])
352 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
353 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
354 [Define to 1 if the linker supports weak symbols.])
358 # Figure out if we support wchar well
361 [folly_cv_prog_cc_wchar_support],
367 int main(int argc, char** argv) {
368 return wcstol(L"01", nullptr, 10) == 1 ? 0 : 1;
371 [folly_cv_prog_cc_wchar_support=yes],
372 [folly_cv_prog_cc_wchar_support=no])])
374 if test "$folly_cv_prog_cc_wchar_support" = "yes"; then
375 AC_DEFINE([HAVE_WCHAR_SUPPORT], [1], [Define to 1 if the libc supports wchar well])
378 # Figure out whether the architecture supports unaligned accesses
380 [for unaligned access support],
381 [folly_cv_prog_cc_unaligned_access],
384 int main(int argc, char** argv) {
386 unsigned long *ptr = (unsigned long *)(buf + 1);
388 return (*ptr & 0xff) == 0xef ? 0 : 1;
391 [folly_cv_prog_cc_unaligned_access=yes],
392 [folly_cv_prog_cc_unaligned_access=no])])
394 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
395 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
399 [for vsnprintf reporting bad format strings],
400 [folly_cv_prog_vsnprintf_bad_format],
405 int main(int argc, char** argv) {
407 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
409 [folly_cv_prog_vsnprintf_bad_format="yes"],
410 [folly_cv_prog_vsnprintf_bad_format="no"])])
412 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
413 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
414 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
417 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
418 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
419 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
420 [Define to 1 if we have cplus_demangle_v3_callback.])
423 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
424 # want to link with librt if necessary.
425 AC_SEARCH_LIBS([clock_gettime], [rt],
427 [HAVE_CLOCK_GETTIME],
429 [Define to 1 if we support clock_gettime(2).]),
432 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
433 # want to include pthread.h if necessary.
435 [for pthread_atfork support],
436 [folly_cv_prog_cc_pthread_atfork],
440 void func() {pthread_atfork(NULL, NULL, NULL);}]
442 [folly_cv_prog_cc_pthread_atfork=yes],
443 [folly_cv_prog_cc_pthread_atfork=no])])
445 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
446 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
449 # Check for XSI-compatible strerror_r as default implementation
451 [for XSI style strerror_r support],
452 [folly_cv_prog_cc_xsi_strerror_r],
457 int main(int argc, char** argv) {
460 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
464 [folly_cv_prog_cc_xsi_strerror_r=yes],
465 [folly_cv_prog_cc_xsi_strerror_r=no])])
467 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
468 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
472 [for ext/random and __gnu_cxx::sfmt19937],
473 [folly_cv_prog_cc_have_extrandom_sfmt19937],
476 #include <ext/random>
477 int main(int argc, char** argv) {
478 __gnu_cxx::sfmt19937 rng;
482 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
483 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
486 [for VLA (variable-length array) support],
487 [folly_cv_prog_cc_have_vla],
490 int main(int argc, char** argv) {
491 unsigned size = argc;
496 [folly_cv_prog_cc_have_vla=yes],
497 [folly_cv_prog_cc_have_vla=no])])
499 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
503 [Define to 1 if the compiler has VLA (variable-length array) support,
504 otherwise define to 0])
506 # Checks for library functions.
507 AC_CHECK_FUNCS([getdelim \
522 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
523 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
524 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
525 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
526 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [main]))
528 AC_ARG_ENABLE([follytestmain],
529 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
530 [follytestmain=${enableval}], [follytestmain=no])
532 use_follytestmain=yes
533 if test "x${follytestmain}" = "xyes"; then
534 AC_CHECK_HEADERS([libdwarf.h dwarf.h],, AC_MSG_ERROR([Please install libdwarf development package]))
535 AC_CHECK_HEADERS([libelf.h elf.h],, AC_MSG_ERROR([Please install libelf development package]))
536 AC_CHECK_HEADERS([libunwind.h],, AC_MSG_ERROR([Please install libinwind development package]))
538 AC_CHECK_HEADERS([libdwarf.h dwarf.h],, [use_follytestmain=no])
539 AC_CHECK_HEADERS([libelf.h elf.h],, [use_follytestmain=no])
540 AC_CHECK_HEADERS([libunwind.h],, [use_follytestmain=no])
543 AC_ARG_ENABLE([mobile],
544 AS_HELP_STRING([--enable-mobile],
545 [enables using main function from folly for tests]),
546 [mobile=${enableval}], [mobile=no])
547 AS_IF([test "x${mobile}" = "xyes"], [
548 AC_DEFINE([MOBILE], [1],
549 [Define to 1 for compiler guards for mobile targets.])
552 # Include directory that contains "folly" so #include <folly/Foo.h> works
553 AM_CPPFLAGS='-I$(top_srcdir)/..'
554 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
555 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
556 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
557 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
558 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
560 AC_SUBST([AM_CPPFLAGS])
561 AC_SUBST([AM_LDFLAGS])
563 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
564 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
565 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
566 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
567 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
568 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
569 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
570 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
571 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
572 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
573 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
574 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
576 # remove pkg-config deps from dependent libraries
577 # (at least for pkg-config file purposes)
578 FB_FILTER_PKG_LIBS([$AM_LDFLAGS $LIBS])
581 AC_CONFIG_FILES([Makefile
584 test/function_benchmark/Makefile
585 experimental/Makefile
586 experimental/symbolizer/Makefile