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 $CXXFLAGS"
56 # expose required -std option via pkg-config
59 # See if -Wshadow-local and -Wshadow-compatible-local are supported
61 [whether -Wshadow-local and -Wshadow-compatible-local are supported])
62 AC_CACHE_VAL([folly_cv_cxx_shadow_local_support], [
63 folly_save_CXXFLAGS="$CXXFLAGS"
64 CXXFLAGS="$CXXFLAGS -Wshadow-local -Wshadow-compatible-local"
66 [AC_LANG_PROGRAM([[]], [[]])],
67 [folly_cv_cxx_shadow_local_support=yes],
68 [folly_cv_cxx_shadow_local_support=no])
69 CXXFLAGS="$folly_save_CXXFLAGS"])
70 AC_MSG_RESULT([$folly_cv_cxx_shadow_local_support])
71 if test "$folly_cv_cxx_shadow_local_support" = yes; then
72 AC_DEFINE([HAVE_SHADOW_LOCAL_WARNINGS], [1],
73 [Define if both -Wshadow-local and -Wshadow-compatible-local are supported.])
76 # Checks for glog and gflags
77 # There are no symbols with C linkage, so we do a try-run
78 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
79 [Please install google-gflags library])])
81 [for gflags viability],
82 [folly_cv_prog_cc_gflags],
85 #include <gflags/gflags.h>
86 DEFINE_bool(folly_truthy, true, "Sample truthy flag");
87 DEFINE_bool(folly_falsey, false, "Sample falsey flag");
88 int main(int argc, char** argv) {
89 return (FLAGS_folly_truthy && !FLAGS_folly_falsey) ? 0 : 1;
92 [folly_cv_prog_cc_gflags=yes],
93 [folly_cv_prog_cc_gflags=no]
97 if test "$folly_cv_prog_cc_gflags" != "yes"; then
98 AC_MSG_ERROR(["gflags invalid, see config.log for details"])
100 FB_CHECK_PKG_CONFIG([GFLAGS], [gflags])
102 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
103 [Please install google-glog library])])
105 [for glog viability],
106 [folly_cv_prog_cc_glog],
109 #include <glog/logging.h>
110 int main(int argc, char** argv) {
111 google::InitGoogleLogging(argv[0]);
112 google::ShutdownGoogleLogging();
116 [folly_cv_prog_cc_glog=yes],
117 [folly_cv_prog_cc_glog=no]
121 if test "$folly_cv_prog_cc_glog" != "yes"; then
122 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
124 FB_CHECK_PKG_CONFIG([GLOG], [libglog])
127 [test "x$OPENSSL_INCLUDES" = "x"],
129 AX_CHECK_OPENSSL([], [AC_MSG_ERROR(["Error: libssl required"])])
132 # AX_CHECK_OPENSSL doesn't seem to play nice with builds started
133 # via build/bootstrap-osx-homebrew.sh
134 AC_MSG_WARN(["Using existing OpenSSL flags from environment."])
135 PKG_CXXFLAGS="$PKG_CXXFLAGS $OPENSSL_INCLUDES"
138 FB_CHECK_PKG_CONFIG([OPENSSL], [openssl])
140 # check for boost libs
141 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
142 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
144 AX_BOOST_PROGRAM_OPTIONS
151 # Check for python interpreter
154 # Checks for header files.
156 AC_CHECK_HEADERS([features.h malloc.h bits/functexcept.h bits/c++config.h])
158 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
159 [Couldn't find double-conversion.h, please download from \
160 https://github.com/google/double-conversion/])], [])
161 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
162 [Please install double-conversion library])])
164 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
165 FB_CHECK_PKG_CONFIG([EVENT], [libevent])
167 AC_ARG_WITH([jemalloc], [
168 --with-jemalloc Whether to make folly jemalloc aware
170 AC_CHECK_LIB([jemalloc], [xallocx],[
171 AC_DEFINE([USE_JEMALLOC], [1], [Enable jemalloc])
173 AC_MSG_ERROR([--with-jemalloc requested, but jemalloc not found])
177 # Checks for typedefs, structures, and compiler characteristics.
183 AC_CHECK_TYPE([__int128], [folly_cv_prog_cc_int128=yes],
184 [folly_cv_prog_cc_int128=no])
185 if test "$folly_cv_prog_cc_int128" = "yes"; then
186 AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128])
188 [for __int128 type traits],
189 [folly_cv_prog_cc_int128traits],
192 #include <type_traits>
194 ::std::is_same<::std::make_signed<unsigned __int128>::type, __int128>::value,
195 "signed form of \`unsigned __uint128\` must be \`__int128\`.");
197 [folly_cv_prog_cc_int128traits=yes],
198 [folly_cv_prog_cc_int128traits=no])
200 if test "$folly_cv_prog_cc_int128traits" = "no"; then
201 AC_DEFINE([SUPPLY_MISSING_INT128_TRAITS], [1], [Define if we need the standard integer traits defined for the type `__int128'.])
205 AC_CHECK_TYPES([pthread_spinlock_t])
209 [folly_cv_prog_cc_ifunc],
212 #pragma GCC diagnostic error "-Wattributes"
213 extern "C" void (*test_ifunc(void))() { return 0; }
214 void func() __attribute__((ifunc("test_ifunc")));]
216 [folly_cv_prog_cc_ifunc=yes],
217 [folly_cv_prog_cc_ifunc=no])])
219 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
220 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
224 [for final and override support],
225 [folly_cv_c_final_override],
227 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
228 class D : public C { virtual void g() override {} };]],
229 [folly_cv_c_final_override=yes],
230 [folly_cv_c_final_override=no])])
232 if test "$folly_cv_c_final_override" = "yes"; then
234 override_val=override
241 [FINAL], [$final_val],
242 [Define to "final" if the compiler supports C++11 "final"])
244 [OVERRIDE], [$override_val],
245 [Define to "override" if the compiler supports C++11 "override"])
249 [folly_cv_lib_libcpp],
252 #include <type_traits>
258 [folly_cv_lib_libcpp=yes],
259 [folly_cv_lib_libcpp=no])])
261 if test "$folly_cv_lib_libcpp" = yes; then
262 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
266 [for c++11 atomic support without GNU Atomic library],
267 [folly_cv_lib_libatomic],
272 struct Test { int val; };
277 [folly_cv_lib_libatomic=yes],
278 [folly_cv_lib_libatomic=no])])
280 if test "$folly_cv_lib_libatomic" = no; then
281 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
282 [Please install the GNU Atomic library])])
285 if test "$build_os" = "linux-gnu"; then
286 AC_HAVE_LIBRARY([dl],[],[AC_MSG_ERROR(
287 [Folly depends on libdl])])
291 [for liblinux-vdso support],
292 [folly_cv_lib_liblinux_vdso],
297 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
305 [folly_cv_lib_liblinux_vdso=yes],
306 [folly_cv_lib_liblinux_vdso=no])])
308 if test "$folly_cv_lib_liblinux_vdso" = yes; then
309 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
312 AC_DEFINE([HAVE_PTHREAD], [1], [Define to 1 if pthread is avaliable])
315 [for usable std::is_trivially_copyable],
316 [folly_cv_decl_std_is_trivially_copyable],
319 #include <type_traits>
320 const bool val = std::is_trivially_copyable<bool>::value;]
322 [folly_cv_decl_std_is_trivially_copyable=yes],
323 [folly_cv_decl_std_is_trivially_copyable=no])])
325 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
326 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
327 [Define to 1 if we have a usable std::is_trivially_copyable<T>
333 [folly_cv_decl_gflags_namespace],
336 #include <gflags/gflags.h>
337 void foo() { gflags::GetArgv(); }]
339 [folly_cv_decl_gflags_namespace=gflags],
342 #include <gflags/gflags.h>
343 void foo() { google::GetArgv(); }]
345 [folly_cv_decl_gflags_namespace=google],
346 [folly_cv_decl_gflags_namespace=error])])])
348 if test "$folly_cv_decl_gflags_namespace" = error; then
349 AC_MSG_ERROR([Cannot determine gflags namespace])
352 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
353 [Define to gflags namespace (usually "google" or "gflags")])
354 if test "$folly_cv_decl_gflags_namespace" != gflags; then
355 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
356 [Define to 1 if the gflags namespace is not "gflags"])
360 # Figure out if we support weak symbols. If not, we will link in some null
361 # stubs for functions that would otherwise be weak.
363 [for weak symbol support],
364 [folly_cv_prog_cc_weak_symbols],
367 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
368 int main(int argc, char** argv) {
369 return configure_link_extern_weak_test == nullptr;
371 [folly_cv_prog_cc_weak_symbols="yes"],
372 [folly_cv_prog_cc_weak_symbols="no"])])
374 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
375 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
376 [Define to 1 if the linker supports weak symbols.])
380 # Figure out if we support wchar well
383 [folly_cv_prog_cc_wchar_support],
389 int main(int argc, char** argv) {
390 return wcstol(L"01", nullptr, 10) == 1 ? 0 : 1;
393 [folly_cv_prog_cc_wchar_support=yes],
394 [folly_cv_prog_cc_wchar_support=no])])
396 if test "$folly_cv_prog_cc_wchar_support" = "yes"; then
397 AC_DEFINE([HAVE_WCHAR_SUPPORT], [1], [Define to 1 if the libc supports wchar well])
400 # Figure out whether the architecture supports unaligned accesses
402 [for unaligned access support],
403 [folly_cv_prog_cc_unaligned_access],
406 int main(int argc, char** argv) {
408 unsigned long *ptr = (unsigned long *)(buf + 1);
410 return (*ptr & 0xff) == 0xef ? 0 : 1;
413 [folly_cv_prog_cc_unaligned_access=yes],
414 [folly_cv_prog_cc_unaligned_access=no])])
416 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
417 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
421 [for vsnprintf reporting bad format strings],
422 [folly_cv_prog_vsnprintf_bad_format],
427 int main(int argc, char** argv) {
429 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
431 [folly_cv_prog_vsnprintf_bad_format="yes"],
432 [folly_cv_prog_vsnprintf_bad_format="no"])])
434 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
435 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
436 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
439 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
440 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
441 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
442 [Define to 1 if we have cplus_demangle_v3_callback.])
445 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
446 # want to link with librt if necessary.
447 AC_SEARCH_LIBS([clock_gettime], [rt],
449 [HAVE_CLOCK_GETTIME],
451 [Define to 1 if we support clock_gettime(2).]),
454 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
455 # want to include pthread.h if necessary.
457 [for pthread_atfork support],
458 [folly_cv_prog_cc_pthread_atfork],
462 void func() {pthread_atfork(NULL, NULL, NULL);}]
464 [folly_cv_prog_cc_pthread_atfork=yes],
465 [folly_cv_prog_cc_pthread_atfork=no])])
467 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
468 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
471 # Check for XSI-compatible strerror_r as default implementation
473 [for XSI style strerror_r support],
474 [folly_cv_prog_cc_xsi_strerror_r],
479 int main(int argc, char** argv) {
482 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
486 [folly_cv_prog_cc_xsi_strerror_r=yes],
487 [folly_cv_prog_cc_xsi_strerror_r=no])])
489 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
490 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
494 [for ext/random and __gnu_cxx::sfmt19937],
495 [folly_cv_prog_cc_have_extrandom_sfmt19937],
498 #include <ext/random>
499 int main(int argc, char** argv) {
500 __gnu_cxx::sfmt19937 rng;
504 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
505 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
508 [for VLA (variable-length array) support],
509 [folly_cv_prog_cc_have_vla],
512 int main(int argc, char** argv) {
513 unsigned size = argc;
518 [folly_cv_prog_cc_have_vla=yes],
519 [folly_cv_prog_cc_have_vla=no])])
521 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
525 [Define to 1 if the compiler has VLA (variable-length array) support,
526 otherwise define to 0])
529 [for variable template support],
530 [folly_cv_prog_cc_have_variable_templates],
533 template <class> constexpr bool g = true;
536 [folly_cv_prog_cc_have_variable_templates=yes],
537 [folly_cv_prog_cc_have_variable_templates=no])])
540 [HAVE_VARIABLE_TEMPLATES],
541 [test "x${folly_cv_prog_cc_have_variable_templates}" = "xyes"],
542 [Define to 1 if the compiler supports variable templates])
544 # Checks for library functions.
545 AC_CHECK_FUNCS([malloc_size \
553 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
554 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
555 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
556 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
557 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [ZSTD_compressStream]))
558 AC_CHECK_HEADER([bzlib.h], AC_CHECK_LIB([bz2], [main]))
559 AC_CHECK_HEADER([linux/membarrier.h], AC_DEFINE([HAVE_LINUX_MEMBARRIER_H], [1], [Define to 1 if membarrier.h is available]))
561 AC_ARG_ENABLE([follytestmain],
562 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
563 [use_follytestmain=${enableval}], [use_follytestmain=yes])
565 # libdwarf used to install in /usr/include, now installs in /usr/include/libdwarf.
567 AC_CHECK_HEADERS([libdwarf/dwarf.h dwarf.h], [have_libdwarf=yes])
569 AC_ARG_ENABLE([mobile],
570 AS_HELP_STRING([--enable-mobile],
571 [enables using main function from folly for tests]),
572 [mobile=${enableval}], [mobile=no])
573 AS_IF([test "x${mobile}" = "xyes"], [
574 AC_DEFINE([MOBILE], [1],
575 [Define to 1 for compiler guards for mobile targets.])
578 AC_ARG_ENABLE([exception-tracer],
579 AS_HELP_STRING([--enable-exception-tracer], [enables building exception tracer]),
580 [build_exception_tracer=${enableval}], [build_exception_tracer=no])
582 AC_ARG_ENABLE([symbolizer],
583 AS_HELP_STRING([--enable-symbolizer], [try to build symbolizer if possible]),
584 [folly_try_use_symbolizer=${enableval}], [folly_try_use_symbolizer=yes])
586 folly_use_symbolizer=no
587 if test "$folly_try_use_symbolizer" = yes; then
588 if test "$build_os" = "linux-gnu" && test "$have_libdwarf" = yes; then
591 AC_CHECK_LIB([unwind], [backtrace], [folly_use_symbolizer=yes]),
595 if test "$folly_use_symbolizer" = yes; then
596 AC_DEFINE([USE_SYMBOLIZER], [1], [Define to 1 if we should use the symbolizer in init])
600 # Include directory that contains "folly" so #include <folly/Foo.h> works
601 AM_CPPFLAGS='-I$(top_srcdir)/..'
602 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS $OPENSSL_INCLUDES"
603 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
604 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
605 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
606 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
608 AM_LDFLAGS="$AM_LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LIBS"
610 AC_SUBST([AM_CPPFLAGS])
611 AC_SUBST([AM_LDFLAGS])
613 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
614 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
615 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
616 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
617 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
618 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
619 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
620 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
621 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
622 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
623 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
624 AM_CONDITIONAL([HAVE_LIBDWARF], [test "x${have_libdwarf}" = "xyes"])
625 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
626 AM_CONDITIONAL([EXCEPTION_TRACER], [test "x${build_exception_tracer}" = "xyes"])
627 AM_CONDITIONAL([USE_SYMBOLIZER], [test "x${folly_use_symbolizer}" = "xyes"])
629 # remove pkg-config deps from dependent libraries
630 # (at least for pkg-config file purposes)
631 FB_FILTER_PKG_LIBS([$AM_LDFLAGS $LIBS])
634 AC_CONFIG_FILES([Makefile
638 test/function_benchmark/Makefile
639 experimental/Makefile
640 experimental/io/test/Makefile
641 experimental/logging/Makefile
642 experimental/logging/example/Makefile
643 experimental/symbolizer/Makefile
645 stats/test/Makefile])
647 AM_COND_IF([EXCEPTION_TRACER],
648 [AC_CONFIG_FILES([experimental/exception_tracer/Makefile])])