coarray_43.f90: Add "-latomic" option if libatomic_available.

[gcc.git] / libatomic / configure.ac

diff --git a/libatomic/configure.ac b/libatomic/configure.ac
index 18d1dea0503a65c5ec9d1cca379cd6e3a2184f90..023f1727b1e9b64f99a43a4ce83574974e43a3d1 100644 (file)
--- a/libatomic/configure.ac
+++ b/libatomic/configure.ac
@@ -1,5 +1,5 @@
 # Process this file with autoreconf to produce a configure script.
-#  Copyright (C) 2012 Free Software Foundation, Inc.
+#  Copyright (C) 2012-2017 Free Software Foundation, Inc.
 #
 #  This file is part of the GNU Atomic Library (libatomic).
 #
@@ -76,12 +76,13 @@ target_alias=${target_alias-$host_alias}
 #  no-define:  PACKAGE and VERSION will not be #define'd in config.h (a bunch
 #              of other PACKAGE_* variables will, however, and there's nothing
 #              we can do about that; they come from AC_INIT).
+#  no-dist:  we don't want 'dist' and related rules.
 #  foreign:  we don't follow the normal rules for GNU packages (no COPYING
 #            file in the top srcdir, etc, etc), so stop complaining.
 #  -Wall:  turns on all automake warnings...
 #  -Wno-portability:  ...except this one, since GNU make is required.
 #  -Wno-override: ... and this one, since we do want this in testsuite.
-AM_INIT_AUTOMAKE([1.9.0 foreign -Wall -Wno-portability -Wno-override])
+AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override])
 AM_ENABLE_MULTILIB(, ..)
 
 # Calculate toolexeclibdir
@@ -142,13 +143,20 @@ AC_PROG_INSTALL
 
 # Configure libtool
 AM_PROG_LIBTOOL
+ACX_LT_HOST_FLAGS
 AC_SUBST(enable_shared)
 AC_SUBST(enable_static)
+AM_MAINTAINER_MODE
 
 # For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=1:0:0
+libtool_VERSION=3:0:2
 AC_SUBST(libtool_VERSION)
 
+# Check for used threading-model
+AC_MSG_CHECKING([for thread model used by GCC])
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+AC_MSG_RESULT([$target_thread_file])
+
 # Get target configury.
 . ${srcdir}/configure.tgt
 if test -n "$UNSUPPORTED"; then
@@ -163,6 +171,7 @@ CFLAGS="$save_CFLAGS -fno-sync-libcalls $XCFLAGS"
 AC_STDC_HEADERS
 ACX_HEADER_STRING
 GCC_HEADER_STDINT(gstdint.h)
+AC_CHECK_HEADERS([fenv.h])
 
 # Check for common type sizes
 LIBAT_FORALL_MODES([LIBAT_HAVE_INT_MODE])
@@ -205,7 +214,7 @@ case " $config_path " in
        [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
       [],
       [AC_MSG_ERROR([Pthreads are required to build libatomic])])])
-  CFLAGS="$save_CFLAGS $XCFLAGS"
+  CFLAGS="$save_CFLAGS $XPCFLAGS"
   ;;
 esac
 
@@ -245,6 +254,9 @@ AM_CONDITIONAL(ARCH_I386,
 AM_CONDITIONAL(ARCH_X86_64,
               [test "$ARCH" = x86 && test x$libat_cv_wordsize = x8])
 
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
+
 if test ${multilib} = yes; then
   multilib_arg="--enable-multilib"
 else