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 "$folly_cv_prog_cc_gflags" != "yes"; then
105 AC_MSG_ERROR(["gflags invalid, see config.log for details"])
107 FB_CHECK_PKG_CONFIG([GFLAGS], [gflags])
109 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
110 [Please install google-glog library])])
112 [for glog viability],
113 [folly_cv_prog_cc_glog],
116 #include <glog/logging.h>
117 int main(int argc, char** argv) {
118 google::InitGoogleLogging(argv[0]);
119 google::ShutdownGoogleLogging();
123 [folly_cv_prog_cc_glog=yes],
124 [folly_cv_prog_cc_glog=no]
128 if test "$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 [test "x$OPENSSL_INCLUDES" = "x"],
136 AX_CHECK_OPENSSL([], [AC_MSG_ERROR(["Error: libssl required"])])
139 # AX_CHECK_OPENSSL doesn't seem to play nice with builds started
140 # via build/bootstrap-osx-homebrew.sh
141 AC_MSG_WARN(["Using existing OpenSSL flags from environment."])
142 PKG_CXXFLAGS="$PKG_CXXFLAGS $OPENSSL_INCLUDES"
145 FB_CHECK_PKG_CONFIG([OPENSSL], [openssl])
147 # check for boost libs
148 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
149 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
151 AX_BOOST_PROGRAM_OPTIONS
158 # Check for python interpreter
161 # Checks for header files.
163 AC_CHECK_HEADERS([features.h malloc.h bits/functexcept.h bits/c++config.h])
165 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
166 [Couldn't find double-conversion.h, please download from \
167 https://github.com/google/double-conversion/])], [])
168 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
169 [Please install double-conversion library])])
171 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
172 FB_CHECK_PKG_CONFIG([EVENT], [libevent])
174 AC_ARG_WITH([jemalloc], [
175 --with-jemalloc Whether to make folly jemalloc aware
177 AC_CHECK_LIB([jemalloc], [xallocx],[
178 AC_DEFINE([USE_JEMALLOC], [1], [Enable jemalloc])
180 AC_MSG_ERROR([--with-jemalloc requested, but jemalloc not found])
184 # Checks for typedefs, structures, and compiler characteristics.
190 AC_CHECK_TYPE([__int128], [folly_cv_prog_cc_int128=yes],
191 [folly_cv_prog_cc_int128=no])
192 if test "$folly_cv_prog_cc_int128" = "yes"; then
193 AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128])
195 [for __int128 type traits],
196 [folly_cv_prog_cc_int128traits],
199 #include <type_traits>
201 ::std::is_same<::std::make_signed<unsigned __int128>::type, __int128>::value,
202 "signed form of \`unsigned __uint128\` must be \`__int128\`.");
204 [folly_cv_prog_cc_int128traits=yes],
205 [folly_cv_prog_cc_int128traits=no])
207 if test "$folly_cv_prog_cc_int128traits" = "no"; then
208 AC_DEFINE([SUPPLY_MISSING_INT128_TRAITS], [1], [Define if we need the standard integer traits defined for the type `__int128'.])
212 AC_CHECK_TYPES([pthread_spinlock_t])
216 [folly_cv_prog_cc_ifunc],
219 #pragma GCC diagnostic error "-Wattributes"
220 extern "C" void (*test_ifunc(void))() { return 0; }
221 void func() __attribute__((ifunc("test_ifunc")));]
223 [folly_cv_prog_cc_ifunc=yes],
224 [folly_cv_prog_cc_ifunc=no])])
226 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
227 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
231 [for final and override support],
232 [folly_cv_c_final_override],
234 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
235 class D : public C { virtual void g() override {} };]],
236 [folly_cv_c_final_override=yes],
237 [folly_cv_c_final_override=no])])
239 if test "$folly_cv_c_final_override" = "yes"; then
241 override_val=override
248 [FINAL], [$final_val],
249 [Define to "final" if the compiler supports C++11 "final"])
251 [OVERRIDE], [$override_val],
252 [Define to "override" if the compiler supports C++11 "override"])
256 [folly_cv_lib_libcpp],
259 #include <type_traits>
265 [folly_cv_lib_libcpp=yes],
266 [folly_cv_lib_libcpp=no])])
268 if test "$folly_cv_lib_libcpp" = yes; then
269 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
273 [for c++11 atomic support without GNU Atomic library],
274 [folly_cv_lib_libatomic],
279 struct Test { int val; };
284 [folly_cv_lib_libatomic=yes],
285 [folly_cv_lib_libatomic=no])])
287 if test "$folly_cv_lib_libatomic" = no; then
288 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
289 [Please install the GNU Atomic library])])
293 [for liblinux-vdso support],
294 [folly_cv_lib_liblinux_vdso],
299 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
307 [folly_cv_lib_liblinux_vdso=yes],
308 [folly_cv_lib_liblinux_vdso=no])])
310 if test "$folly_cv_lib_liblinux_vdso" = yes; then
311 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
314 AC_DEFINE([HAVE_PTHREAD], [1], [Define to 1 if pthread is avaliable])
317 [for usable std::is_trivially_copyable],
318 [folly_cv_decl_std_is_trivially_copyable],
321 #include <type_traits>
322 const bool val = std::is_trivially_copyable<bool>::value;]
324 [folly_cv_decl_std_is_trivially_copyable=yes],
325 [folly_cv_decl_std_is_trivially_copyable=no])])
327 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
328 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
329 [Define to 1 if we have a usable std::is_trivially_copyable<T>
335 [folly_cv_decl_gflags_namespace],
338 #include <gflags/gflags.h>
339 void foo() { gflags::GetArgv(); }]
341 [folly_cv_decl_gflags_namespace=gflags],
344 #include <gflags/gflags.h>
345 void foo() { google::GetArgv(); }]
347 [folly_cv_decl_gflags_namespace=google],
348 [folly_cv_decl_gflags_namespace=error])])])
350 if test "$folly_cv_decl_gflags_namespace" = error; then
351 AC_MSG_ERROR([Cannot determine gflags namespace])
354 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
355 [Define to gflags namespace (usually "google" or "gflags")])
356 if test "$folly_cv_decl_gflags_namespace" != gflags; then
357 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
358 [Define to 1 if the gflags namespace is not "gflags"])
362 # Figure out if we support weak symbols. If not, we will link in some null
363 # stubs for functions that would otherwise be weak.
365 [for weak symbol support],
366 [folly_cv_prog_cc_weak_symbols],
369 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
370 int main(int argc, char** argv) {
371 return configure_link_extern_weak_test == nullptr;
373 [folly_cv_prog_cc_weak_symbols="yes"],
374 [folly_cv_prog_cc_weak_symbols="no"])])
376 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
377 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
378 [Define to 1 if the linker supports weak symbols.])
382 # Figure out if we support wchar well
385 [folly_cv_prog_cc_wchar_support],
391 int main(int argc, char** argv) {
392 return wcstol(L"01", nullptr, 10) == 1 ? 0 : 1;
395 [folly_cv_prog_cc_wchar_support=yes],
396 [folly_cv_prog_cc_wchar_support=no])])
398 if test "$folly_cv_prog_cc_wchar_support" = "yes"; then
399 AC_DEFINE([HAVE_WCHAR_SUPPORT], [1], [Define to 1 if the libc supports wchar well])
402 # Figure out whether the architecture supports unaligned accesses
404 [for unaligned access support],
405 [folly_cv_prog_cc_unaligned_access],
408 int main(int argc, char** argv) {
410 unsigned long *ptr = (unsigned long *)(buf + 1);
412 return (*ptr & 0xff) == 0xef ? 0 : 1;
415 [folly_cv_prog_cc_unaligned_access=yes],
416 [folly_cv_prog_cc_unaligned_access=no])])
418 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
419 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
423 [for vsnprintf reporting bad format strings],
424 [folly_cv_prog_vsnprintf_bad_format],
429 int main(int argc, char** argv) {
431 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
433 [folly_cv_prog_vsnprintf_bad_format="yes"],
434 [folly_cv_prog_vsnprintf_bad_format="no"])])
436 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
437 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
438 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
441 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
442 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
443 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
444 [Define to 1 if we have cplus_demangle_v3_callback.])
447 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
448 # want to link with librt if necessary.
449 AC_SEARCH_LIBS([clock_gettime], [rt],
451 [HAVE_CLOCK_GETTIME],
453 [Define to 1 if we support clock_gettime(2).]),
456 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
457 # want to include pthread.h if necessary.
459 [for pthread_atfork support],
460 [folly_cv_prog_cc_pthread_atfork],
464 void func() {pthread_atfork(NULL, NULL, NULL);}]
466 [folly_cv_prog_cc_pthread_atfork=yes],
467 [folly_cv_prog_cc_pthread_atfork=no])])
469 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
470 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
473 # Check for XSI-compatible strerror_r as default implementation
475 [for XSI style strerror_r support],
476 [folly_cv_prog_cc_xsi_strerror_r],
481 int main(int argc, char** argv) {
484 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
488 [folly_cv_prog_cc_xsi_strerror_r=yes],
489 [folly_cv_prog_cc_xsi_strerror_r=no])])
491 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
492 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
496 [for ext/random and __gnu_cxx::sfmt19937],
497 [folly_cv_prog_cc_have_extrandom_sfmt19937],
500 #include <ext/random>
501 int main(int argc, char** argv) {
502 __gnu_cxx::sfmt19937 rng;
506 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
507 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
510 [for VLA (variable-length array) support],
511 [folly_cv_prog_cc_have_vla],
514 int main(int argc, char** argv) {
515 unsigned size = argc;
520 [folly_cv_prog_cc_have_vla=yes],
521 [folly_cv_prog_cc_have_vla=no])])
523 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
527 [Define to 1 if the compiler has VLA (variable-length array) support,
528 otherwise define to 0])
530 # Checks for library functions.
531 AC_CHECK_FUNCS([malloc_size \
539 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
540 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
541 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
542 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
543 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [ZSTD_compressStream]))
544 AC_CHECK_HEADER([bzlib.h], AC_CHECK_LIB([bz2], [main]))
545 AC_CHECK_HEADER([linux/membarrier.h], AC_DEFINE([HAVE_LINUX_MEMBARRIER_H], [1], [Define to 1 if membarrier.h is available]))
547 AC_ARG_ENABLE([follytestmain],
548 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
549 [use_follytestmain=${enableval}], [use_follytestmain=yes])
551 # libdwarf used to install in /usr/include, now installs in /usr/include/libdwarf.
552 AC_CHECK_HEADERS([libdwarf/dwarf.h dwarf.h], [break])
553 # Check whether we have both the library and the header
555 AS_IF([test "x${ac_cv_header_libdwarf_dwarf_h}" = xyes], [have_libdwarf=yes])
556 AS_IF([test "x${ac_cv_header_dwarf_h}" = xyes], [have_libdwarf=yes])
559 AC_ARG_ENABLE([mobile],
560 AS_HELP_STRING([--enable-mobile],
561 [enables using main function from folly for tests]),
562 [mobile=${enableval}], [mobile=no])
563 AS_IF([test "x${mobile}" = "xyes"], [
564 AC_DEFINE([MOBILE], [1],
565 [Define to 1 for compiler guards for mobile targets.])
568 AC_ARG_ENABLE([exception-tracer],
569 AS_HELP_STRING([--enable-exception-tracer], [enables building exception tracer]),
570 [build_exception_tracer=${enableval}], [build_exception_tracer=no])
572 # Include directory that contains "folly" so #include <folly/Foo.h> works
573 AM_CPPFLAGS='-I$(top_srcdir)/..'
574 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS $OPENSSL_INCLUDES"
575 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
576 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
577 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
578 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
580 AM_LDFLAGS="$AM_LDFLAGS $OPENSSL_LDFLAGS $OPENSSL_LIBS"
582 AC_SUBST([AM_CPPFLAGS])
583 AC_SUBST([AM_LDFLAGS])
585 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
586 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
587 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
588 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
589 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
590 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
591 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
592 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
593 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
594 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
595 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
596 AM_CONDITIONAL([HAVE_LIBDWARF], [test "x${have_libdwarf}" = "xyes"])
597 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
598 AM_CONDITIONAL([EXCEPTION_TRACER], [test "x${build_exception_tracer}" = "xyes"])
600 # remove pkg-config deps from dependent libraries
601 # (at least for pkg-config file purposes)
602 FB_FILTER_PKG_LIBS([$AM_LDFLAGS $LIBS])
605 AC_CONFIG_FILES([Makefile
609 test/function_benchmark/Makefile
610 experimental/Makefile
611 experimental/io/test/Makefile
612 experimental/symbolizer/Makefile
615 AM_COND_IF([EXCEPTION_TRACER],
616 [AC_CONFIG_FILES([experimental/exception_tracer/Makefile])])