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 "$folly_cv_prog_cc_gflags" != "yes"; then
100 AC_MSG_ERROR(["libgflags invalid, see config.log for details"])
106 [AC_MSG_ERROR(["Error: libssl required"])])
108 # check for boost libs
109 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
110 [Please install boost >= 1.51.0 (context, thread, regex, and system)])])
117 # Check for python interpreter
120 # Checks for header files.
122 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h emmintrin.h byteswap.h bits/functexcept.h bits/c++config.h])
124 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
125 [Couldn't find double-conversion.h, please download from \
126 https://github.com/google/double-conversion/])], [])
127 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
128 [Please install double-conversion library])])
130 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
132 AC_CHECK_LIB([jemalloc], [xallocx])
134 # Checks for typedefs, structures, and compiler characteristics.
141 AC_CHECK_TYPE([__int128], AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128]))
142 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
146 [folly_cv_prog_cc_ifunc],
149 #pragma GCC diagnostic error "-Wattributes"
150 extern "C" void (*test_ifunc(void))() { return 0; }
151 void func() __attribute__((ifunc("test_ifunc")));]
153 [folly_cv_prog_cc_ifunc=yes],
154 [folly_cv_prog_cc_ifunc=no])])
156 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
157 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
161 [for final and override support],
162 [folly_cv_c_final_override],
164 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
165 class D : public C { virtual void g() override {} };]],
166 [folly_cv_c_final_override=yes],
167 [folly_cv_c_final_override=no])])
169 if test "$folly_cv_c_final_override" = "yes"; then
171 override_val=override
178 [FINAL], [$final_val],
179 [Define to "final" if the compiler supports C++11 "final"])
181 [OVERRIDE], [$override_val],
182 [Define to "override" if the compiler supports C++11 "override"])
185 [for std::this_thread::sleep_for],
186 [folly_cv_func_this_thread_sleep_for],
191 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
192 [folly_cv_func_this_thread_sleep_for=yes],
193 [folly_cv_func_this_thread_sleep_for=no])])
195 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
196 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
197 [Define to 1 if std::this_thread::sleep_for() is defined.])
201 [for constexpr strlen],
202 [folly_cv_func_constexpr_strlen],
206 static constexpr int val = strlen("foo");]],
207 [folly_cv_func_constexpr_strlen=yes],
208 [folly_cv_func_constexpr_strlen=no])])
210 if test "$folly_cv_func_constexpr_strlen" = yes; then
211 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
212 [Define to 1 if strlen(3) is constexpr.])
217 [folly_cv_lib_libcpp],
220 #include <type_traits>
226 [folly_cv_lib_libcpp=yes],
227 [folly_cv_lib_libcpp=no])])
229 if test "$folly_cv_lib_libcpp" = yes; then
230 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we're using libc++.])
234 [for usable std::is_trivially_copyable],
235 [folly_cv_decl_std_is_trivially_copyable],
238 #include <type_traits>
239 const bool val = std::is_trivially_copyable<bool>::value;]
241 [folly_cv_decl_std_is_trivially_copyable=yes],
242 [folly_cv_decl_std_is_trivially_copyable=no])])
244 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
245 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
246 [Define to 1 if we have a usable std::is_trivially_copyable<T>
252 [folly_cv_decl_gflags_namespace],
255 #include <gflags/gflags.h>
256 void foo() { gflags::GetArgv(); }]
258 [folly_cv_decl_gflags_namespace=gflags],
261 #include <gflags/gflags.h>
262 void foo() { google::GetArgv(); }]
264 [folly_cv_decl_gflags_namespace=google],
265 [folly_cv_decl_gflags_namespace=error])])])
267 if test "$folly_cv_decl_gflags_namespace" = error; then
268 AC_MSG_ERROR([Cannot determine gflags namespace])
271 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
272 [Define to gflags namespace (usually "google" or "gflags")])
273 if test "$folly_cv_decl_gflags_namespace" != gflags; then
274 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
275 [Define to 1 if the gflags namespace is not "gflags"])
279 # Figure out if we support weak symbols. If not, we will link in some null
280 # stubs for functions that would otherwise be weak.
282 [for weak symbol support],
283 [folly_cv_prog_cc_weak_symbols],
286 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
287 int main(int argc, char** argv) {
288 return configure_link_extern_weak_test == nullptr;
290 [folly_cv_prog_cc_weak_symbols="yes"],
291 [folly_cv_prog_cc_weak_symbols="no"])])
293 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
294 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
295 [Define to 1 if the linker supports weak symbols.])
299 [for vsnprintf reporting bad format strings],
300 [folly_cv_prog_vsnprintf_bad_format],
305 int main(int argc, char** argv) {
307 return vsnprintf(buf, sizeof(buf), "%", 1) < 0 ? 0 : 1;
309 [folly_cv_prog_vsnprintf_bad_format="yes"],
310 [folly_cv_prog_vsnprintf_bad_format="no"])])
312 if test "$folly_cv_prog_vsnprintf_bad_format" = yes; then
313 AC_DEFINE([HAVE_VSNPRINTF_ERRORS], [1],
314 [Define to 1 if the vsnprintf supports returning errors on bad format strings.])
317 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
318 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
319 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
320 [Define to 1 if we have cplus_demangle_v3_callback.])
323 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
324 # want to link with librt if necessary.
325 AC_SEARCH_LIBS([clock_gettime], [rt],
327 [HAVE_CLOCK_GETTIME],
329 [Define to 1 if we support clock_gettime(2).]),
332 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
333 # want to include pthread.h if necessary.
335 [for pthread_atfork support],
336 [folly_cv_prog_cc_pthread_atfork],
340 void func() {pthread_atfork(NULL, NULL, NULL);}]
342 [folly_cv_prog_cc_pthread_atfork=yes],
343 [folly_cv_prog_cc_pthread_atfork=no])])
345 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
346 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
349 # Checks for library functions.
350 AC_CHECK_FUNCS([getdelim \
362 if test "$ac_cv_func_pthread_yield" = "no"; then
363 AC_CHECK_HEADERS([sched.h])
364 AC_CHECK_FUNCS([sched_yield])
367 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
368 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
369 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
370 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
372 # Include directory that contains "folly" so #include <folly/Foo.h> works
373 AM_CPPFLAGS='-I$(top_srcdir)/..'
374 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
375 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
376 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
378 AC_SUBST([AM_CPPFLAGS])
379 AC_SUBST([AM_LDFLAGS])
381 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
382 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
383 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
384 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
385 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
386 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
389 AC_CONFIG_FILES([Makefile
391 test/function_benchmark/Makefile])