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])
57 AC_CHECK_HEADER(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_pic],[ceil],[],[AC_MSG_ERROR(
61 [Please install double-conversion library])])
63 # Checks for typedefs, structures, and compiler characteristics.
70 AC_CHECK_TYPE([__int128],
71 [AC_DEFINE([HAVE_INT128_T], [1], [Define if __int128 exists])],
72 [AC_DEFINE([HAVE_INT128_T], [0], [Define if __int128 does not exist])])
73 AC_CHECK_TYPES([ptrdiff_t])
76 #pragma GCC diagnostic error "-Wattributes"
77 extern "C" void (*test_ifunc(void))() { return 0; }
78 void func() __attribute__((ifunc("test_ifunc")));]
80 [AC_DEFINE([HAVE_IFUNC], [1], [Define to 1 if the compiler supports ifunc])],
81 [AC_DEFINE([HAVE_IFUNC], [0], [Define to 0 if the compiler doesn't support ifunc])]
84 [AC_LANG_SOURCE[class C { virtual void f() final {} virtual void g() {} };
85 class D : public C { virtual void g() override {} };]],
86 [AC_DEFINE([FINAL], [final],
87 [Define to "final" if the compiler supports C++11 "final"])
88 AC_DEFINE([OVERRIDE], [override],
89 [Define to "override" if the compiler supports C++11 "override"])],
90 [AC_DEFINE([FINAL], [],
91 [Define to "final" if the compiler supports C++11 "final"])
92 AC_DEFINE([OVERRIDE], [],
93 [Define to "override" if the compiler supports C++11 "override"])]
100 void func() { std::this_thread::sleep_for(std::chrono::seconds(1)); }]],
101 [AC_DEFINE([HAVE_STD__THIS_THREAD__SLEEP_FOR], [1],
102 [Define to 1 if std::this_thread::sleep_for() is defined.])])
107 static constexpr int val = strlen("foo");]],
108 [AC_DEFINE([HAVE_CONSTEXPR_STRLEN], [1],
109 [Define to 1 if strlen(3) is constexpr.])])
113 #include <type_traits>
119 [AC_DEFINE([USE_LIBCPP], [1], [Define to 1 if we're using libc++.])])
123 #include <type_traits>
124 const bool val = std::is_trivially_copyable<bool>::value;]
126 [AC_DEFINE([HAVE_STD__IS_TRIVIALLY_COPYABLE], [1],
127 [Define to 1 if we have a usable std::is_trivially_copyable<T>
130 # Figure out if we support weak symbols. If not, we will link in some null
131 # stubs for functions that would otherwise be weak.
134 extern "C" void configure_link_extern_weak_test() __attribute__((weak));
135 int main(int argc, char** argv) {
136 return configure_link_extern_weak_test == nullptr;
140 ac_have_weak_symbols="yes"
141 AC_DEFINE([HAVE_WEAK_SYMBOLS], [1],
142 [Define to 1 if the linker supports weak symbols.])])
144 # Check for clock_gettime(2). This is not in an AC_CHECK_FUNCS() because we
145 # want to link with librt if necessary.
146 AC_SEARCH_LIBS([clock_gettime], [rt],
148 [HAVE_CLOCK_GETTIME],
150 [Define to 1 if we support clock_gettime(2).]),
153 # Checks for library functions.
154 AC_CHECK_FUNCS([getdelim \
166 if test "$ac_cv_func_pthread_yield" = "no"; then
167 AC_CHECK_HEADERS([sched.h])
168 AC_CHECK_FUNCS([sched_yield])
171 AC_SUBST(AM_CPPFLAGS, '-I../$(top_srcdir)'" "'-I$(top_srcdir)/io'" "'-I$(top_srcdir)/test'" $BOOST_CPPFLAGS")
172 AC_SUBST(AM_LDFLAGS, "$BOOST_LDFLAGS $BOOST_THREAD_LIB $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread")
174 AM_CONDITIONAL([HAVE_STD_THREAD], [test "$ac_cv_header_features" = "yes"])
175 AM_CONDITIONAL([HAVE_X86_64], [test "$build_cpu" = "x86_64"])
176 AM_CONDITIONAL([HAVE_LINUX], [test "$build_os" == "linux-gnu"])
177 AM_CONDITIONAL([HAVE_WEAK_SYMBOLS], [test "$ac_have_weak_symbols" = "yes"])
180 AC_CONFIG_FILES([Makefile
182 test/function_benchmark/Makefile])