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.
39 AC_CXX_COMPILE_STDCXX_0X
41 # Be sure to add any -std option to CXXFLAGS before we invoke any
42 # AC_COMPILE_IFELSE() or similar macros. Any such macros that are invoked
43 # before we update CXXFLAGS will not be run with the same options that we use
44 # during the real build.
46 if test "x$ac_cv_cxx_compile_cxx0x_cxx" = xyes; then
49 if test "x$ac_cv_cxx_compile_cxx0x_gxx" = xyes; then
53 CXXFLAGS="$STD $CXXFLAGS"
55 # Checks for glog and gflags
56 # There are no symbols with C linkage, so we do a try-run
57 AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
58 [Please install google-glog library])])
61 [folly_cv_prog_cc_glog],
64 #include <glog/logging.h>
65 int main(int argc, char** argv) {
66 google::InitGoogleLogging(argv[0]);
67 google::ShutdownGoogleLogging();
71 [folly_cv_prog_cc_glog=yes],
72 [folly_cv_prog_cc_glog=no]
76 if test "$folly_cv_prog_cc_glog" != "yes"; then
77 AC_MSG_ERROR(["libglog invalid, see config.log for details"])
80 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
81 [Please install google-gflags library])])
83 [for gflags viability],
84 [folly_cv_prog_cc_gflags],
87 #include <gflags/gflags.h>
88 DEFINE_bool(folly_truthy, true, "Sample truthy flag");
89 DEFINE_bool(folly_falsey, false, "Sample falsey flag");
90 int main(int argc, char** argv) {
91 return (FLAGS_folly_truthy && !FLAGS_folly_falsey) ? 0 : 1;
94 [folly_cv_prog_cc_gflags=yes],
95 [folly_cv_prog_cc_gflags=no]
99 if test "$folly_cv_prog_cc_gflags" != "yes"; then
100 AC_MSG_ERROR(["libgflags invalid, see config.log for details"])
106 [AC_MSG_ERROR(["Error: libssl required"])])
108 # check for boost libs
109 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
110 [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
112 AX_BOOST_PROGRAM_OPTIONS
119 # Check for python interpreter
122 # Checks for header files.
124 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h byteswap.h bits/functexcept.h bits/c++config.h])
126 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
127 [Couldn't find double-conversion.h, please download from \
128 https://github.com/google/double-conversion/])], [])
129 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
130 [Please install double-conversion library])])
132 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
134 AC_CHECK_LIB([jemalloc], [xallocx])
136 # Checks for typedefs, structures, and compiler characteristics.
143 AC_CHECK_TYPE([__int128], AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128]))
144 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
148 [folly_cv_prog_cc_ifunc],
151 #pragma GCC diagnostic error "-Wattributes"
152 extern "C" void (*test_ifunc(void))() { return 0; }
153 void func() __attribute__((ifunc("test_ifunc")));]
155 [folly_cv_prog_cc_ifunc=yes],
156 [folly_cv_prog_cc_ifunc=no])])
158 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
159 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
163 [for final and override support],
164 [folly_cv_c_final_override],
166 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
167 class D : public C { virtual void g() override {} };]],
168 [folly_cv_c_final_override=yes],
169 [folly_cv_c_final_override=no])])
171 if test "$folly_cv_c_final_override" = "yes"; then
173 override_val=override
180 [FINAL], [$final_val],
181 [Define to "final" if the compiler supports C++11 "final"])
183 [OVERRIDE], [$override_val],
184 [Define to "override" if the compiler supports C++11 "override"])
187 [for std::this_thread::sleep_for],
188 [folly_cv_func_this_thread_sleep_for],
193 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
194 [folly_cv_func_this_thread_sleep_for=yes],
195 [folly_cv_func_this_thread_sleep_for=no])])
197 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
198 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
199 [Define to 1 if std::this_thread::sleep_for() is defined.])
203 [for constexpr strlen],
204 [folly_cv_func_constexpr_strlen],
208 static constexpr int val = strlen("foo");]],
209 [folly_cv_func_constexpr_strlen=yes],
210 [folly_cv_func_constexpr_strlen=no])])
212 if test "$folly_cv_func_constexpr_strlen" = yes; then
213 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
214 [Define to 1 if strlen(3) is constexpr.])
219 [folly_cv_lib_libcpp],
222 #include <type_traits>
228 [folly_cv_lib_libcpp=yes],
229 [folly_cv_lib_libcpp=no])])
231 if test "$folly_cv_lib_libcpp" = yes; then
232 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we are using libc++.])
236 [for c++11 atomic support without GNU Atomic library],
237 [folly_cv_lib_libatomic],
242 struct Test { int val; };
247 [folly_cv_lib_libatomic=yes],
248 [folly_cv_lib_libatomic=no])])
250 if test "$folly_cv_lib_libatomic" = no; then
251 AC_HAVE_LIBRARY([atomic],[],[AC_MSG_ERROR(
252 [Please install the GNU Atomic library])])
256 [for usable std::is_trivially_copyable],
257 [folly_cv_decl_std_is_trivially_copyable],
260 #include <type_traits>
261 const bool val = std::is_trivially_copyable<bool>::value;]
263 [folly_cv_decl_std_is_trivially_copyable=yes],
264 [folly_cv_decl_std_is_trivially_copyable=no])])
266 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
267 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
268 [Define to 1 if we have a usable std::is_trivially_copyable<T>
274 [folly_cv_decl_gflags_namespace],
277 #include <gflags/gflags.h>
278 void foo() { gflags::GetArgv(); }]
280 [folly_cv_decl_gflags_namespace=gflags],
283 #include <gflags/gflags.h>
284 void foo() { google::GetArgv(); }]
286 [folly_cv_decl_gflags_namespace=google],
287 [folly_cv_decl_gflags_namespace=error])])])
289 if test "$folly_cv_decl_gflags_namespace" = error; then
290 AC_MSG_ERROR([Cannot determine gflags namespace])
293 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
294 [Define to gflags namespace (usually "google" or "gflags")])
295 if test "$folly_cv_decl_gflags_namespace" != gflags; then
296 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
297 [Define to 1 if the gflags namespace is not "gflags"])
301 # Figure out if we support weak symbols. If not, we will link in some null
302 # stubs for functions that would otherwise be weak.
304 [for weak symbol support],
305 [folly_cv_prog_cc_weak_symbols],
308 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
309 int main(int argc, char** argv) {
310 return configure_link_extern_weak_test == nullptr;
312 [folly_cv_prog_cc_weak_symbols="yes"],
313 [folly_cv_prog_cc_weak_symbols="no"])])
315 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
316 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
317 [Define to 1 if the linker supports weak symbols.])
320 # Figure out whether the architecture supports unaligned reads
322 [for unaligned reads support],
323 [folly_cv_prog_cc_unaligned_reads],
326 int main(int argc, char** argv) {
328 unsigned long *ptr = (unsigned long *)(buf + 1);
330 return (*ptr & 0xff) == 0xef ? 0 : 1;
333 [folly_cv_prog_cc_unaligned_reads=yes],
334 [folly_cv_prog_cc_unaligned_reads=no])])
336 if test "$folly_cv_prog_cc_unaligned_reads" = "yes"; then
337 AC_DEFINE([HAVE_UNALIGNED_READS], [1], [Define to 1 if the architecture allows unaligned reads])
341 [for vsnprintf reporting bad format strings],
342 [folly_cv_prog_vsnprintf_bad_format],
347 int main(int argc, char** argv) {
349 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
351 [folly_cv_prog_vsnprintf_bad_format="yes"],
352 [folly_cv_prog_vsnprintf_bad_format="no"])])
354 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
355 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
356 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
359 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
360 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
361 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
362 [Define to 1 if we have cplus_demangle_v3_callback.])
365 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
366 # want to link with librt if necessary.
367 AC_SEARCH_LIBS([clock_gettime], [rt],
369 [HAVE_CLOCK_GETTIME],
371 [Define to 1 if we support clock_gettime(2).]),
374 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
375 # want to include pthread.h if necessary.
377 [for pthread_atfork support],
378 [folly_cv_prog_cc_pthread_atfork],
382 void func() {pthread_atfork(NULL, NULL, NULL);}]
384 [folly_cv_prog_cc_pthread_atfork=yes],
385 [folly_cv_prog_cc_pthread_atfork=no])])
387 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
388 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
391 # Check for XSI-compatible strerror_r as default implementation
393 [for XSI style strerror_r support],
394 [folly_cv_prog_cc_xsi_strerror_r],
399 int main(int argc, char** argv) {
402 int ret = strerror_r(ENOMEM, buf, sizeof(buf));
406 [folly_cv_prog_cc_xsi_strerror_r=yes],
407 [folly_cv_prog_cc_xsi_strerror_r=no])])
409 if test "$folly_cv_prog_cc_xsi_strerror_r" = "yes"; then
410 AC_DEFINE([HAVE_XSI_STRERROR_R], [1], [Define to 1 if the runtime supports XSI-style strerror_r])
414 [for ext/random and __gnu_cxx::sfmt19937],
415 [folly_cv_prog_cc_have_extrandom_sfmt19937],
418 #include <ext/random>
419 int main(int argc, char** argv) {
420 __gnu_cxx::sfmt19937 rng;
424 [folly_cv_prog_cc_have_extrandom_sfmt19937=yes],
425 [folly_cv_prog_cc_have_extrandom_sfmt19937=no])])
428 [for VLA (variable-length array) support],
429 [folly_cv_prog_cc_have_vla],
432 int main(int argc, char** argv) {
433 unsigned size = argc;
438 [folly_cv_prog_cc_have_vla=yes],
439 [folly_cv_prog_cc_have_vla=no])])
441 test "$folly_cv_prog_cc_have_vla" = yes && have_vla=1 || have_vla=0
445 [Define to 1 if the compiler has VLA (variable-length array) support,
446 otherwise define to 0])
448 # Checks for library functions.
449 AC_CHECK_FUNCS([getdelim \
461 if test "$ac_cv_func_pthread_yield" = "no"; then
462 AC_CHECK_HEADERS([sched.h])
463 AC_CHECK_FUNCS([sched_yield])
466 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
467 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
468 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
469 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
470 AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [main]))
472 # Include directory that contains "folly" so #include <folly/Foo.h> works
473 AM_CPPFLAGS='-I$(top_srcdir)/..'
474 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
475 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
476 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
477 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
478 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
480 AC_SUBST([AM_CPPFLAGS])
481 AC_SUBST([AM_LDFLAGS])
483 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
484 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
485 AM_CONDITIONAL([HAVE_PPC64], [test "$build_cpu" = "powerpc64le"])
486 AM_CONDITIONAL([RUN_ARCH_SPECIFIC_TESTS], [test "$build_cpu" = "x86_64" || test "$build_cpu" = "powerpc64le"])
487 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
488 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
489 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
490 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
491 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
492 [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
495 AC_CONFIG_FILES([Makefile
497 test/function_benchmark/Makefile])