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 $CXXFLAGS"
55 # Checks for libraries.
56 AC_CHECK_LIB([glog],[openlog],[],[AC_MSG_ERROR(
57 [Please install google-glog library])])
58 AC_CHECK_LIB([gflags],[getenv],[],[AC_MSG_ERROR(
59 [Please install google-gflags library])])
64 [AC_MSG_ERROR(["Error: libssl required"])])
66 # check for boost libs
67 AX_BOOST_BASE([1.20.0], [], [AC_MSG_ERROR(
68 [Please install boost >= 1.20.0 (thread, regex, and system)])])
74 # Checks for header files.
76 AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h emmintrin.h byteswap.h bits/functexcept.h bits/c++config.h])
78 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
79 [Couldn't find double-conversion.h, please download from \
80 https://github.com/floitsch/double-conversion/])], [])
81 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
82 [Please install double-conversion library])])
84 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
86 AC_CHECK_LIB([jemalloc], [xallocx])
88 # Checks for typedefs, structures, and compiler characteristics.
95 AC_CHECK_TYPE([__int128], AC_DEFINE([HAVE_INT128_T], [1], [Define if we have __int128]))
96 AC_CHECK_TYPES([ptrdiff_t, pthread_spinlock_t])
100 [folly_cv_prog_cc_ifunc],
103 #pragma GCC diagnostic error "-Wattributes"
104 extern "C" void (*test_ifunc(void))() { return 0; }
105 void func() __attribute__((ifunc("test_ifunc")));]
107 [folly_cv_prog_cc_ifunc=yes],
108 [folly_cv_prog_cc_ifunc=no])])
110 if test "$folly_cv_prog_cc_ifunc" = "yes"; then
111 AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])
115 [for final and override support],
116 [folly_cv_c_final_override],
118 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
119 class D : public C { virtual void g() override {} };]],
120 [folly_cv_c_final_override=yes],
121 [folly_cv_c_final_override=no])])
123 if test "$folly_cv_c_final_override" = "yes"; then
125 override_val=override
132 [FINAL], [$final_val],
133 [Define to "final" if the compiler supports C++11 "final"])
135 [OVERRIDE], [$override_val],
136 [Define to "override" if the compiler supports C++11 "override"])
139 [for std::this_thread::sleep_for],
140 [folly_cv_func_this_thread_sleep_for],
145 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
146 [folly_cv_func_this_thread_sleep_for=yes],
147 [folly_cv_func_this_thread_sleep_for=no])])
149 if test "$folly_cv_func_this_thread_sleep_for" = yes; then
150 AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
151 [Define to 1 if std::this_thread::sleep_for() is defined.])
155 [for constexpr strlen],
156 [folly_cv_func_constexpr_strlen],
160 static constexpr int val = strlen("foo");]],
161 [folly_cv_func_constexpr_strlen=yes],
162 [folly_cv_func_constexpr_strlen=no])])
164 if test "$folly_cv_func_constexpr_strlen" = yes; then
165 AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
166 [Define to 1 if strlen(3) is constexpr.])
171 [folly_cv_lib_libcpp],
174 #include <type_traits>
180 [folly_cv_lib_libcpp=yes],
181 [folly_cv_lib_libcpp=no])])
183 if test "$folly_cv_lib_libcpp" = yes; then
184 AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we're using libc++.])
188 [for usable std::is_trivially_copyable],
189 [folly_cv_decl_std_is_trivially_copyable],
192 #include <type_traits>
193 const bool val = std::is_trivially_copyable<bool>::value;]
195 [folly_cv_decl_std_is_trivially_copyable=yes],
196 [folly_cv_decl_std_is_trivially_copyable=no])])
198 if test "$folly_cv_decl_std_is_trivially_copyable" = yes; then
199 AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
200 [Define to 1 if we have a usable std::is_trivially_copyable<T>
206 [folly_cv_decl_gflags_namespace],
209 #include <gflags/gflags.h>
210 void foo() { gflags::GetArgv(); }]
212 [folly_cv_decl_gflags_namespace=gflags],
215 #include <gflags/gflags.h>
216 void foo() { google::GetArgv(); }]
218 [folly_cv_decl_gflags_namespace=google],
219 [folly_cv_decl_gflags_namespace=error])])])
221 if test "$folly_cv_decl_gflags_namespace" = error; then
222 AC_MSG_ERROR([Cannot determine gflags namespace])
225 [GFLAGS_NAMESPACE], [$folly_cv_decl_gflags_namespace],
226 [Define to gflags namespace (usually "google" or "gflags")])
227 if test "$folly_cv_decl_gflags_namespace" != gflags; then
228 AC_DEFINE([UNUSUAL_GFLAGS_NAMESPACE], [1],
229 [Define to 1 if the gflags namespace is not "gflags"])
233 # Figure out if we support weak symbols. If not, we will link in some null
234 # stubs for functions that would otherwise be weak.
236 [for weak symbol support],
237 [folly_cv_prog_cc_weak_symbols],
240 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
241 int main(int argc, char** argv) {
242 return configure_link_extern_weak_test == nullptr;
244 [folly_cv_prog_cc_weak_symbols="yes"],
245 [folly_cv_prog_cc_weak_symbols="no"])])
247 if test "$folly_cv_prog_cc_weak_symbols" = yes; then
248 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
249 [Define to 1 if the linker supports weak symbols.])
252 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty_pic iberty])
253 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
254 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
255 [Define to 1 if we have cplus_demangle_v3_callback.])
258 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
259 # want to link with librt if necessary.
260 AC_SEARCH_LIBS([clock_gettime], [rt],
262 [HAVE_CLOCK_GETTIME],
264 [Define to 1 if we support clock_gettime(2).]),
267 # Check for pthread_atfork(3). This is not in an AC_CHECK_FUNCS() because we
268 # want to include pthread.h if necessary.
270 [for pthread_atfork support],
271 [folly_cv_prog_cc_pthread_atfork],
275 void func() {pthread_atfork(NULL, NULL, NULL);}]
277 [folly_cv_prog_cc_pthread_atfork=yes],
278 [folly_cv_prog_cc_pthread_atfork=no])])
280 if test "$folly_cv_prog_cc_pthread_atfork" = "yes"; then
281 AC_DEFINE([HAVE_PTHREAD_ATFORK], [1], [Define to 1 if the compiler supports pthread_atfork])
284 # Checks for library functions.
285 AC_CHECK_FUNCS([getdelim \
297 if test "$ac_cv_func_pthread_yield" = "no"; then
298 AC_CHECK_HEADERS([sched.h])
299 AC_CHECK_FUNCS([sched_yield])
302 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
303 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
304 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
305 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
307 # Include directory that contains "folly" so #include <folly/Foo.h> works
308 AM_CPPFLAGS='-I$(top_srcdir)/..'
309 AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
310 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
311 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
313 AC_SUBST([AM_CPPFLAGS])
314 AC_SUBST([AM_LDFLAGS])
316 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
317 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
318 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
319 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
320 [test "$folly_cv_prog_cc_weak_symbols" = "yes"])
321 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
324 AC_CONFIG_FILES([Makefile
326 test/function_benchmark/Makefile])