3 # Process this file with autoconf to produce a configure script.
6 AC_INIT(folly, 0.1, folly@fb.com)
7 AC_CONFIG_SRCDIR([Likely.h])
8 AC_CONFIG_HEADERS([config.h])
9 AX_PREFIX_CONFIG_H([folly-config.h], [folly], [config.h])
10 AC_CONFIG_AUX_DIR([build-aux])
12 AM_INIT_AUTOMAKE([foreign dist-bzip2 nostdinc])
14 AC_CONFIG_MACRO_DIR([m4])
21 # Checks for programs.
24 AC_CXX_COMPILE_STDCXX_0X
26 # Be sure to add any -std option to CXXFLAGS before we invoke any
27 # AC_COMPILE_IFELSE() or similar macros. Any such macros that are invoked
28 # before we update CXXFLAGS will not be run with the same options that we use
29 # during the real build.
31 if test "x$ac_cv_cxx_compile_cxx0x_cxx" = xyes; then
34 if test "x$ac_cv_cxx_compile_cxx0x_gxx" = xyes; then
38 CXXFLAGS="$STD $CXXFLAGS"
40 # Checks for libraries.
41 AC_CHECK_LIB([glog],[openlog],[],[AC_MSG_ERROR(
42 [Please install google-glog library])])
43 AC_CHECK_LIB([gflags],[getenv],[],[AC_MSG_ERROR(
44 [Please install google-gflags library])])
46 # check for boost libs
47 AX_BOOST_BASE([1.20.0], [], [AC_MSG_ERROR(
48 [Please install boost >= 1.20.0 (thread, regex, and system)])])
54 # Checks for header files.
56 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])
58 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
59 [Couldn't find double-conversion.h, please download from \
60 http://code.google.com/p/double-conversion/])], [])
61 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
62 [Please install double-conversion library])])
64 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
66 # Checks for typedefs, structures, and compiler characteristics.
73 AC_CHECK_TYPE([__int128],
74 [AC_DEFINE([HAVE_INT128_T], [1], [Define if __int128 exists])],
75 [AC_DEFINE([HAVE_INT128_T], [0], [Define if __int128 does not exist])])
76 AC_CHECK_TYPES([ptrdiff_t])
79 #pragma GCC diagnostic error "-Wattributes"
80 extern "C" void (*test_ifunc(void))() { return 0; }
81 void func() __attribute__((ifunc("test_ifunc")));]
83 [AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])],
84 [AC_DEFINE([HAVE_IFUNC], [0], [Define to 0 if the compiler doesn't support ifunc])]
87 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
88 class D : public C { virtual void g() override {} };]],
89 [AC_DEFINE([FINAL], [final],
90 [Define to "final" if the compiler supports C++11 "final"])
91 AC_DEFINE([OVERRIDE], [override],
92 [Define to "override" if the compiler supports C++11 "override"])],
93 [AC_DEFINE([FINAL], [],
94 [Define to "final" if the compiler supports C++11 "final"])
95 AC_DEFINE([OVERRIDE], [],
96 [Define to "override" if the compiler supports C++11 "override"])]
103 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
104 [AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
105 [Define to 1 if std::this_thread::sleep_for() is defined.])])
110 static constexpr int val = strlen("foo");]],
111 [AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
112 [Define to 1 if strlen(3) is constexpr.])])
116 #include <type_traits>
122 [AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we're using libc++.])])
126 #include <type_traits>
127 const bool val = std::is_trivially_copyable<bool>::value;]
129 [AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
130 [Define to 1 if we have a usable std::is_trivially_copyable<T>
133 # Figure out if we support weak symbols. If not, we will link in some null
134 # stubs for functions that would otherwise be weak.
137 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
138 int main(int argc, char** argv) {
139 return configure_link_extern_weak_test == nullptr;
143 ac_have_weak_symbols="yes"
144 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
145 [Define to 1 if the linker supports weak symbols.])])
147 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty])
148 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
149 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
150 [Define to 1 if we have cplus_demangle_v3_callback.])
153 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
154 # want to link with librt if necessary.
155 AC_SEARCH_LIBS([clock_gettime], [rt],
157 [HAVE_CLOCK_GETTIME],
159 [Define to 1 if we support clock_gettime(2).]),
162 # Checks for library functions.
163 AC_CHECK_FUNCS([getdelim \
175 if test "$ac_cv_func_pthread_yield" = "no"; then
176 AC_CHECK_HEADERS([sched.h])
177 AC_CHECK_FUNCS([sched_yield])
180 AC_SUBST(AM_CPPFLAGS, '-I../$(top_srcdir)'" "'-I$(top_srcdir)/io'" "'-I$(top_srcdir)/test'" $BOOST_CPPFLAGS")
181 AC_SUBST(AM_LDFLAGS, "$BOOST_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread")
183 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
184 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
185 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
186 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS], [test "$ac_have_weak_symbols" = "yes"])
187 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept" = "yes"])
190 AC_CONFIG_FILES([Makefile
192 test/function_benchmark/Makefile])