Revert "Changed AC_LANG from PROGRAM to SOURCE to prevent double definition of main"
[folly.git] / folly / configure.ac
index bcfe9c9402e1df4c95fb98a01388f9cf91e7b967..6e031f13436c6fd8687f597e128cdc4321994534 100644 (file)
@@ -54,29 +54,6 @@ CXXFLAGS="$STD $CXXFLAGS"
 
 # Checks for glog and gflags
 # There are no symbols with C linkage, so we do a try-run
-AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
-                [Please install google-glog library])])
-AC_CACHE_CHECK(
-  [for glog viability],
-  [folly_cv_prog_cc_glog],
-  [AC_RUN_IFELSE(
-    [AC_LANG_SOURCE[
-      #include <glog/logging.h>
-      int main(int argc, char** argv) {
-        google::InitGoogleLogging(argv[0]);
-        google::ShutdownGoogleLogging();
-        return 0;
-      }
-    ]],
-    [folly_cv_prog_cc_glog=yes],
-    [folly_cv_prog_cc_glog=no]
-  )]
-)
-
-if test "$folly_cv_prog_cc_glog" != "yes"; then
-  AC_MSG_ERROR(["libglog invalid, see config.log for details"])
-fi
-
 AC_HAVE_LIBRARY([gflags],[],[AC_MSG_ERROR(
                 [Please install google-gflags library])])
 AC_CACHE_CHECK(
@@ -100,6 +77,29 @@ if test "$folly_cv_prog_cc_gflags" != "yes"; then
   AC_MSG_ERROR(["libgflags invalid, see config.log for details"])
 fi
 
+AC_HAVE_LIBRARY([glog],[],[AC_MSG_ERROR(
+                [Please install google-glog library])])
+AC_CACHE_CHECK(
+  [for glog viability],
+  [folly_cv_prog_cc_glog],
+  [AC_RUN_IFELSE(
+    [AC_LANG_SOURCE[
+      #include <glog/logging.h>
+      int main(int argc, char** argv) {
+        google::InitGoogleLogging(argv[0]);
+        google::ShutdownGoogleLogging();
+        return 0;
+      }
+    ]],
+    [folly_cv_prog_cc_glog=yes],
+    [folly_cv_prog_cc_glog=no]
+  )]
+)
+
+if test "$folly_cv_prog_cc_glog" != "yes"; then
+  AC_MSG_ERROR(["libglog invalid, see config.log for details"])
+fi
+
 AC_CHECK_LIB(ssl,
         SSL_ctrl,
         [],
@@ -107,20 +107,21 @@ AC_CHECK_LIB(ssl,
 
 # check for boost libs
 AX_BOOST_BASE([1.51.0], [], [AC_MSG_ERROR(
-              [Please install boost >= 1.51.0 (context, thread, program_options, regex, and system)])])
+              [Please install boost >= 1.51.0 (context, thread, program_options, regex, system and chrono)])])
 AX_BOOST_CONTEXT
 AX_BOOST_PROGRAM_OPTIONS
 AX_BOOST_THREAD
 AX_BOOST_REGEX
 AX_BOOST_SYSTEM
 AX_BOOST_FILESYSTEM
+AX_BOOST_CHRONO
 
 # Check for python interpreter
 AM_PATH_PYTHON
 
 # Checks for header files.
 AC_HEADER_STDC
-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 byteswap.h bits/functexcept.h bits/c++config.h])
+AC_CHECK_HEADERS([fcntl.h features.h inttypes.h limits.h sched.h stdint.h stdlib.h string.h sys/time.h unistd.h mutex.h malloc.h byteswap.h bits/functexcept.h bits/c++config.h])
 
 AC_CHECK_HEADER(double-conversion/double-conversion.h, [], [AC_MSG_ERROR(
                 [Couldn't find double-conversion.h, please download from \
@@ -235,7 +236,7 @@ AC_CACHE_CHECK(
   [for c++11 atomic support without GNU Atomic library],
   [folly_cv_lib_libatomic],
   [AC_LINK_IFELSE(
-    [AC_LANG_SOURCE[
+    [AC_LANG_PROGRAM[
       #include <atomic>
       int main() {
         struct Test { int val; };
@@ -251,6 +252,28 @@ if test "$folly_cv_lib_libatomic" = no; then
                   [Please install the GNU Atomic library])])
 fi
 
+AC_CACHE_CHECK(
+  [for liblinux-vdso support],
+  [folly_cv_lib_liblinux_vdso],
+  [AC_RUN_IFELSE(
+    [AC_LANG_PROGRAM[
+      #include <dlfcn.h>
+      int main() {
+        void *h = dlopen("linux-vdso.so.1", RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD);
+        if (h == nullptr) {
+          return -1;
+        }
+        dlclose(h);
+        return 0;
+      }
+    ]],
+    [folly_cv_lib_liblinux_vdso=yes],
+    [folly_cv_lib_liblinux_vdso=no])])
+
+if test "$folly_cv_lib_liblinux_vdso" = yes; then
+  AC_DEFINE([HAVE_LINUX_VDSO], [1], [Define to 1 if liblinux-vdso is available])
+fi
+
 AC_CACHE_CHECK(
   [for usable std::is_trivially_copyable],
   [folly_cv_decl_std_is_trivially_copyable],
@@ -316,6 +339,26 @@ if test "$folly_cv_prog_cc_weak_symbols" = yes; then
             [Define to 1 if the linker supports weak symbols.])
 fi
 
+# Figure out whether the architecture supports unaligned accesses
+AC_CACHE_CHECK(
+  [for unaligned access support],
+  [folly_cv_prog_cc_unaligned_access],
+  [AC_RUN_IFELSE(
+    [AC_LANG_SOURCE[
+      int main(int argc, char** argv) {
+        char buf[64] = {0};
+        unsigned long *ptr = (unsigned long *)(buf + 1);
+        *ptr = 0xdeadbeef;
+        return (*ptr & 0xff) == 0xef ? 0 : 1;
+      }
+    ]],
+    [folly_cv_prog_cc_unaligned_access=yes],
+    [folly_cv_prog_cc_unaligned_access=no])])
+
+if test "$folly_cv_prog_cc_unaligned_access" = "yes"; then
+  AC_DEFINE([HAVE_UNALIGNED_ACCESS], [1], [Define to 1 if the architecture allows unaligned accesses])
+fi
+
 AC_CACHE_CHECK(
   [for vsnprintf reporting bad format strings],
   [folly_cv_prog_vsnprintf_bad_format],
@@ -431,21 +474,32 @@ AC_CHECK_FUNCS([getdelim \
                 memset \
                 pow \
                 strerror \
-                pthread_yield \
+                sched_yield \
                 malloc_size \
                 malloc_usable_size \
                 memrchr \
                 pipe2])
 
-if test "$ac_cv_func_pthread_yield" = "no"; then
-   AC_CHECK_HEADERS([sched.h])
-   AC_CHECK_FUNCS([sched_yield])
-fi
-
 AC_CHECK_HEADER([lz4.h], AC_CHECK_LIB([lz4], [LZ4_decompress_safe]))
 AC_CHECK_HEADER([snappy.h], AC_CHECK_LIB([snappy], [main]))
 AC_CHECK_HEADER([zlib.h], AC_CHECK_LIB([z], [main]))
 AC_CHECK_HEADER([lzma.h], AC_CHECK_LIB([lzma], [main]))
+AC_CHECK_HEADER([zstd.h], AC_CHECK_LIB([zstd], [main]))
+
+AC_ARG_ENABLE([follytestmain],
+   AS_HELP_STRING([--enable-follytestmain], [enables using main function from folly for tests]),
+   [follytestmain=${enableval}], [follytestmain=no])
+
+use_follytestmain=yes
+if test "x${follytestmain}" = "xyes"; then
+   AC_CHECK_HEADERS([libdwarf.h dwarf.h],, AC_MSG_ERROR([Please install libdwarf development package]))
+   AC_CHECK_HEADERS([libelf.h elf.h],, AC_MSG_ERROR([Please install libelf development package]))
+   AC_CHECK_HEADERS([libunwind.h],, AC_MSG_ERROR([Please install libinwind development package]))
+else
+   AC_CHECK_HEADERS([libdwarf.h dwarf.h],, [use_follytestmain=no])
+   AC_CHECK_HEADERS([libelf.h elf.h],, [use_follytestmain=no])
+   AC_CHECK_HEADERS([libunwind.h],, [use_follytestmain=no])
+fi
 
 # Include directory that contains "folly" so #include <folly/Foo.h> works
 AM_CPPFLAGS='-I$(top_srcdir)/..'
@@ -453,6 +507,7 @@ AM_CPPFLAGS="$AM_CPPFLAGS $BOOST_CPPFLAGS"
 AM_LDFLAGS="$AM_LDFLAGS $BOOST_CONTEXT_LIB $BOOST_PROGRAM_OPTIONS_LIB"
 AM_LDFLAGS="$AM_LDFLAGS $BOOST_THREAD_LIB $BOOST_FILESYSTEM_LIB"
 AM_LDFLAGS="$AM_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_REGEX_LIB -lpthread"
+AM_LDFLAGS="$AM_LDFLAGS $BOOST_CHRONO_LIB"
 
 AC_SUBST([AM_CPPFLAGS])
 AC_SUBST([AM_LDFLAGS])
@@ -467,9 +522,13 @@ AM_CONDITIONAL([HAVE_WEAK_SYMBOLS],
 AM_CONDITIONAL([HAVE_BITS_FUNCTEXCEPT], [test "$ac_cv_header_bits_functexcept_h" = "yes"])
 AM_CONDITIONAL([HAVE_EXTRANDOM_SFMT19937],
                [test "$folly_cv_prog_cc_have_extrandom_sfmt19937" = "yes"])
+AM_CONDITIONAL([FOLLY_TESTMAIN], [test "x${use_follytestmain}" = "xyes"])
 
 # Output
 AC_CONFIG_FILES([Makefile
                  test/Makefile
-                 test/function_benchmark/Makefile])
+                 test/function_benchmark/Makefile
+                 experimental/Makefile
+                 experimental/symbolizer/Makefile
+                 init/Makefile])
 AC_OUTPUT