install-reloc: Support multi-binary installation.

[gnulib.git] / m4 / openmp.m4

diff --git a/m4/openmp.m4 b/m4/openmp.m4
index f2424df..b72761f 100644 (file)
--- a/m4/openmp.m4
+++ b/m4/openmp.m4
@@ -1,5 +1,5 @@
-# openmp.m4 serial 7
-dnl Copyright (C) 2006-2011 Free Software Foundation, Inc.
+# openmp.m4 serial 9
+dnl Copyright (C) 2006-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -35,7 +35,14 @@ m4_copy([_AC_LANG_OPENMP(C)], [_AC_LANG_OPENMP(C++)])
 # _AC_LANG_OPENMP(Fortran 77)
 # ---------------------------
 m4_define([_AC_LANG_OPENMP(Fortran 77)],
-[AC_LANG_FUNC_LINK_TRY([omp_get_num_threads])])
+[
+      program main
+      implicit none
+!$    integer tid
+      tid = 42
+      call omp_set_num_threads(2)
+      end
+])
 
 # _AC_LANG_OPENMP(Fortran)
 # ---------------------------
@@ -70,12 +77,16 @@ AC_DEFUN([AC_OPENMP],
           dnl   SGI C, PGI C         -mp
           dnl   Tru64 Compaq C       -omp
           dnl   IBM C (AIX, Linux)   -qsmp=omp
+          dnl   Cray CCE             -homp
+          dnl   NEC SX               -Popenmp
+          dnl   Lahey Fortran (Linux)  --openmp
           dnl If in this loop a compiler is passed an option that it doesn't
           dnl understand or that it misinterprets, the AC_LINK_IFELSE test
           dnl will fail (since we know that it failed without the option),
           dnl therefore the loop will continue searching for an option, and
           dnl no output file called 'penmp' or 'mp' is created.
-          for ac_option in -fopenmp -xopenmp -openmp -mp -omp -qsmp=omp; do
+          for ac_option in -fopenmp -xopenmp -openmp -mp -omp -qsmp=omp -homp \
+                           -Popenmp --openmp; do
             ac_save_[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
             _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $ac_option"
             AC_LINK_IFELSE([_AC_LANG_OPENMP],