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)])])
53 # Checks for header files.
55 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])
57 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
58 [Couldn't find double-conversion.h, please download from \
59 http://code.google.com/p/double-conversion/])], [])
60 AC_CHECK_LIB([double-conversion],[ceil],[],[AC_MSG_ERROR(
61 [Please install double-conversion library])])
63 AC_CHECK_LIB([event], [event_set], [], [AC_MSG_ERROR([Unable to find libevent])])
65 # Checks for typedefs, structures, and compiler characteristics.
72 AC_CHECK_TYPE([__int128],
73 [AC_DEFINE([HAVE_INT128_T], [1], [Define if __int128 exists])],
74 [AC_DEFINE([HAVE_INT128_T], [0], [Define if __int128 does not exist])])
75 AC_CHECK_TYPES([ptrdiff_t])
78 #pragma GCC diagnostic error "-Wattributes"
79 extern "C" void (*test_ifunc(void))() { return 0; }
80 void func() __attribute__((ifunc("test_ifunc")));]
82 [AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])],
83 [AC_DEFINE([HAVE_IFUNC], [0], [Define to 0 if the compiler doesn't support ifunc])]
86 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
87 class D : public C { virtual void g() override {} };]],
88 [AC_DEFINE([FINAL], [final],
89 [Define to "final" if the compiler supports C++11 "final"])
90 AC_DEFINE([OVERRIDE], [override],
91 [Define to "override" if the compiler supports C++11 "override"])],
92 [AC_DEFINE([FINAL], [],
93 [Define to "final" if the compiler supports C++11 "final"])
94 AC_DEFINE([OVERRIDE], [],
95 [Define to "override" if the compiler supports C++11 "override"])]
102 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
103 [AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
104 [Define to 1 if std::this_thread::sleep_for() is defined.])])
109 static constexpr int val = strlen("foo");]],
110 [AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
111 [Define to 1 if strlen(3) is constexpr.])])
115 #include <type_traits>
121 [AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we're using libc++.])])
125 #include <type_traits>
126 const bool val = std::is_trivially_copyable<bool>::value;]
128 [AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
129 [Define to 1 if we have a usable std::is_trivially_copyable<T>
132 # Figure out if we support weak symbols. If not, we will link in some null
133 # stubs for functions that would otherwise be weak.
136 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
137 int main(int argc, char** argv) {
138 return configure_link_extern_weak_test == nullptr;
142 ac_have_weak_symbols="yes"
143 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
144 [Define to 1 if the linker supports weak symbols.])])
146 AC_SEARCH_LIBS([cplus_demangle_v3_callback], [iberty])
147 if test "$ac_cv_search_cplus_demangle_v3_callback" != "no" ; then
148 AC_DEFINE([HAVE_CPLUS_DEMANGLE_V3_CALLBACK], [1],
149 [Define to 1 if we have cplus_demangle_v3_callback.])
152 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
153 # want to link with librt if necessary.
154 AC_SEARCH_LIBS([clock_gettime], [rt],
156 [HAVE_CLOCK_GETTIME],
158 [Define to 1 if we support clock_gettime(2).]),
161 # Checks for library functions.
162 AC_CHECK_FUNCS([getdelim \
174 if test "$ac_cv_func_pthread_yield" = "no"; then
175 AC_CHECK_HEADERS([sched.h])
176 AC_CHECK_FUNCS([sched_yield])
179 AC_SUBST(AM_CPPFLAGS, '-I../$(top_srcdir)'" "'-I$(top_srcdir)/io'" "'-I$(top_srcdir)/test'" $BOOST_CPPFLAGS")
180 AC_SUBST(AM_LDFLAGS, "$BOOST_LDFLAGS $BOOST_THREAD_LIB $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread")
182 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
183 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
184 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
185 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS], [test "$ac_have_weak_symbols" = "yes"])
186 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept" = "yes"])
189 AC_CONFIG_FILES([Makefile
191 test/function_benchmark/Makefile])