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 AC_CONFIG_SRCDIR([Likely.h])
16 AC_CONFIG_HEADERS([config.h])
17 AX_PREFIX_CONFIG_H([folly-config.h], [folly], [config.h])
18 AC_CONFIG_AUX_DIR([build-aux])
20 AM_INIT_AUTOMAKE([foreign dist-bzip2 nostdinc subdir-objects])
22 AC_CONFIG_MACRO_DIR([m4])
24 AX_CONFIG_FEATURE_DEFAULT_DISABLED
27 [supports deprecated associative containers (hash_map/hash_set)],
28 [HAVE_DEPRECATED_ASSOC],
29 [Define if you want to support deprecated associative containers])
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 $CXXFLAGS"
56 # Checks for glog and gflags
57 # There are no symbols with C linkage, so we do a try-run
58 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
59 [Please install google-gflags library])])
61 [for gflags viability],
62 [folly_cv_prog_cc_gflags],
65 #include <gflags/gflags.h>
66 DEFINE_bool(folly_truthy, true, "Sample truthy flag");
67 DEFINE_bool(folly_falsey, false, "Sample falsey flag");
68 int main(int argc, char** argv) {
69 return (FLAGS_folly_truthy && !FLAGS_folly_falsey) ? 0 : 1;
72 [folly_cv_prog_cc_gflags=yes],
73 [folly_cv_prog_cc_gflags=no]
77 if test "$folly_cv_prog_cc_gflags" != "yes"; then
78 AC_MSG_ERROR(["libgflags invalid, see config.log for details"])
81 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
82 [Please install google-glog library])])
85 [folly_cv_prog_cc_glog],
88 #include <glog/logging.h>
89 int main(int argc, char** argv) {
90 google::InitGoogleLogging(argv[0]);
91 google::ShutdownGoogleLogging();
95 [folly_cv_prog_cc_glog=yes],
96 [folly_cv_prog_cc_glog=no]
100 if test "$folly_cv_prog_cc_glog" != "yes"; then
101 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
107 [AC_MSG_ERROR(["Error: libssl required"])])
109 # check for boost libs
110 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
111 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
113 AX_BOOST_PROGRAM_OPTIONS
120 # Check for python interpreter
123 # Checks for header files.
125 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h sched.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h byteswap.h bits/functexcept.h bits/c++config.h])
127 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
128 [Couldn't find double-conversion.h, please download from \
129 https://github.com/google/double-conversion/])], [])
130 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
131 [Please install double-conversion library])])
133 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
135 AC_CHECK_LIB([jemalloc], [xallocx])
137 # Checks for typedefs, structures, and compiler characteristics.
144 AC_CHECK_TYPE([__int128], AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128]))
145 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
149 [folly_cv_prog_cc_ifunc],
152 #pragma GCC diagnostic error "-Wattributes"
153 extern "C" void (*test_ifunc(void))() { return 0; }
154 void func() __attribute__((ifunc("test_ifunc")));]
156 [folly_cv_prog_cc_ifunc=yes],
157 [folly_cv_prog_cc_ifunc=no])])
159 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
160 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
164 [for final and override support],
165 [folly_cv_c_final_override],
167 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
168 class D : public C { virtual void g() override {} };]],
169 [folly_cv_c_final_override=yes],
170 [folly_cv_c_final_override=no])])
172 if test "$folly_cv_c_final_override" = "yes"; then
174 override_val=override
181 [FINAL], [$final_val],
182 [Define to "final" if the compiler supports C++11 "final"])
184 [OVERRIDE], [$override_val],
185 [Define to "override" if the compiler supports C++11 "override"])
188 [for std::this_thread::sleep_for],
189 [folly_cv_func_this_thread_sleep_for],
194 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
195 [folly_cv_func_this_thread_sleep_for=yes],
196 [folly_cv_func_this_thread_sleep_for=no])])
198 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
199 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
200 [Define to 1 if std::this_thread::sleep_for() is defined.])
204 [for constexpr strlen],
205 [folly_cv_func_constexpr_strlen],
209 static constexpr int val = strlen("foo");]],
210 [folly_cv_func_constexpr_strlen=yes],
211 [folly_cv_func_constexpr_strlen=no])])
213 if test "$folly_cv_func_constexpr_strlen" = yes; then
214 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
215 [Define to 1 if strlen(3) is constexpr.])
220 [folly_cv_lib_libcpp],
223 #include <type_traits>
229 [folly_cv_lib_libcpp=yes],
230 [folly_cv_lib_libcpp=no])])
232 if test "$folly_cv_lib_libcpp" = yes; then
233 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
237 [for c++11 atomic support without GNU Atomic library],
238 [folly_cv_lib_libatomic],
243 struct Test { int val; };
248 [folly_cv_lib_libatomic=yes],
249 [folly_cv_lib_libatomic=no])])
251 if test "$folly_cv_lib_libatomic" = no; then
252 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
253 [Please install the GNU Atomic library])])
257 [for liblinux-vdso support],
258 [folly_cv_lib_liblinux_vdso],
263 void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
271 [folly_cv_lib_liblinux_vdso=yes],
272 [folly_cv_lib_liblinux_vdso=no])])
274 if test "$folly_cv_lib_liblinux_vdso" = yes; then
275 AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
279 [for usable std::is_trivially_copyable],
280 [folly_cv_decl_std_is_trivially_copyable],
283 #include <type_traits>
284 const bool val = std::is_trivially_copyable<bool>::value;]
286 [folly_cv_decl_std_is_trivially_copyable=yes],
287 [folly_cv_decl_std_is_trivially_copyable=no])])
289 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
290 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
291 [Define to 1 if we have a usable std::is_trivially_copyable<T>
297 [folly_cv_decl_gflags_namespace],
300 #include <gflags/gflags.h>
301 void foo() { gflags::GetArgv(); }]
303 [folly_cv_decl_gflags_namespace=gflags],
306 #include <gflags/gflags.h>
307 void foo() { google::GetArgv(); }]
309 [folly_cv_decl_gflags_namespace=google],
310 [folly_cv_decl_gflags_namespace=error])])])
312 if test "$folly_cv_decl_gflags_namespace" = error; then
313 AC_MSG_ERROR([Cannot determine gflags namespace])
316 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
317 [Define to gflags namespace (usually "google" or "gflags")])
318 if test "$folly_cv_decl_gflags_namespace" != gflags; then
319 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
320 [Define to 1 if the gflags namespace is not "gflags"])
324 # Figure out if we support weak symbols. If not, we will link in some null
325 # stubs for functions that would otherwise be weak.
327 [for weak symbol support],
328 [folly_cv_prog_cc_weak_symbols],
331 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
332 int main(int argc, char** argv) {
333 return configure_link_extern_weak_test == nullptr;
335 [folly_cv_prog_cc_weak_symbols="yes"],
336 [folly_cv_prog_cc_weak_symbols="no"])])
338 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
339 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
340 [Define to 1 if the linker supports weak symbols.])
343 # Figure out whether the architecture supports unaligned accesses
345 [for unaligned access support],
346 [folly_cv_prog_cc_unaligned_access],
349 int main(int argc, char** argv) {
351 unsigned long *ptr = (unsigned long *)(buf + 1);
353 return (*ptr & 0xff) == 0xef ? 0 : 1;
356 [folly_cv_prog_cc_unaligned_access=yes],
357 [folly_cv_prog_cc_unaligned_access=no])])
359 if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
360 AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
364 [for vsnprintf reporting bad format strings],
365 [folly_cv_prog_vsnprintf_bad_format],
370 int main(int argc, char** argv) {
372 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
374 [folly_cv_prog_vsnprintf_bad_format="yes"],
375 [folly_cv_prog_vsnprintf_bad_format="no"])])
377 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
378 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
379 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
382 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
383 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
384 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
385 [Define to 1 if we have cplus_demangle_v3_callback.])
388 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
389 # want to link with librt if necessary.
390 AC_SEARCH_LIBS([clock_gettime], [rt],
392 [HAVE_CLOCK_GETTIME],
394 [Define to 1 if we support clock_gettime(2).]),
397 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
398 # want to include pthread.h if necessary.
400 [for pthread_atfork support],
401 [folly_cv_prog_cc_pthread_atfork],
405 void func() {pthread_atfork(NULL, NULL, NULL);}]
407 [folly_cv_prog_cc_pthread_atfork=yes],
408 [folly_cv_prog_cc_pthread_atfork=no])])
410 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
411 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
414 # Check for XSI-compatible strerror_r as default implementation
416 [for XSI style strerror_r support],
417 [folly_cv_prog_cc_xsi_strerror_r],
422 int main(int argc, char** argv) {
425 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
429 [folly_cv_prog_cc_xsi_strerror_r=yes],
430 [folly_cv_prog_cc_xsi_strerror_r=no])])
432 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
433 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
437 [for ext/random and __gnu_cxx::sfmt19937],
438 [folly_cv_prog_cc_have_extrandom_sfmt19937],
441 #include <ext/random>
442 int main(int argc, char** argv) {
443 __gnu_cxx::sfmt19937 rng;
447 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
448 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
451 [for VLA (variable-length array) support],
452 [folly_cv_prog_cc_have_vla],
455 int main(int argc, char** argv) {
456 unsigned size = argc;
461 [folly_cv_prog_cc_have_vla=yes],
462 [folly_cv_prog_cc_have_vla=no])])
464 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
468 [Define to 1 if the compiler has VLA (variable-length array) support,
469 otherwise define to 0])
471 # Checks for library functions.
472 AC_CHECK_FUNCS([getdelim \
487 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
488 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
489 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
490 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
491 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [main]))
493 AC_ARG_ENABLE([follytestmain],
494 AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
495 [follytestmain=${enableval}], [follytestmain=no])
497 use_follytestmain=yes
498 if test "x${follytestmain}" = "xyes"; then
499 AC_CHECK_HEADERS([libdwarf.h dwarf.h],, AC_MSG_ERROR([Please install libdwarf development package]))
500 AC_CHECK_HEADERS([libelf.h elf.h],, AC_MSG_ERROR([Please install libelf development package]))
501 AC_CHECK_HEADERS([libunwind.h],, AC_MSG_ERROR([Please install libinwind development package]))
503 AC_CHECK_HEADERS([libdwarf.h dwarf.h],, [use_follytestmain=no])
504 AC_CHECK_HEADERS([libelf.h elf.h],, [use_follytestmain=no])
505 AC_CHECK_HEADERS([libunwind.h],, [use_follytestmain=no])
508 AC_ARG_ENABLE([mobile],
509 AS_HELP_STRING([--enable-mobile],
510 [enables using main function from folly for tests]),
511 [mobile=${enableval}], [mobile=no])
512 AS_IF([test "x${mobile}" = "xyes"], [
513 AC_DEFINE([MOBILE], [1],
514 [Define to 1 for compiler guards for mobile targets.])
517 # Include directory that contains "folly" so #include <folly/Foo.h> works
518 AM_CPPFLAGS='-I$(top_srcdir)/..'
519 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
520 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
521 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
522 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
523 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
525 AC_SUBST([AM_CPPFLAGS])
526 AC_SUBST([AM_LDFLAGS])
528 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
529 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
530 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
531 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
532 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
533 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
534 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
535 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT_H], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
536 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
537 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
538 AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
539 AM_CONDITIONAL([HAVE_BOOST_CONTEXT], [test "x${ax_cv_boost_context}" = "xyes"])
542 AC_CONFIG_FILES([Makefile
544 test/function_benchmark/Makefile
545 experimental/Makefile
546 experimental/symbolizer/Makefile