strtoumax: fix typo in previous commit.

[gnulib.git] / m4 / openmp.m4

diff --git a/m4/openmp.m4 b/m4/openmp.m4
index 116e6ce..b72761f 100644 (file)
--- a/m4/openmp.m4
+++ b/m4/openmp.m4
@@ -1,5 +1,5 @@
-# openmp.m4 serial 7
-dnl Copyright (C) 2006-2009 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)
 # ---------------------------
@@ -61,30 +68,34 @@ AC_DEFUN([AC_OPENMP],
     AC_CACHE_CHECK([for $CC option to support OpenMP],
       [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp],
       [AC_LINK_IFELSE([_AC_LANG_OPENMP],
-        [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp='none needed'],
-        [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp='unsupported'
-         dnl Try these flags:
-         dnl   GCC >= 4.2           -fopenmp
-         dnl   SunPRO C             -xopenmp
-         dnl   Intel C              -openmp
-         dnl   SGI C, PGI C         -mp
-         dnl   Tru64 Compaq C       -omp
-         dnl   IBM C (AIX, Linux)   -qsmp=omp
-         dnl If in this loop a compiler is passed an option that it doesn't
-         dnl understand or that it misinterprets, the AC_LINK_IFELSE test
-         dnl will fail (since we know that it failed without the option),
-         dnl therefore the loop will continue searching for an option, and
-         dnl no output file called 'penmp' or 'mp' is created.
-         for ac_option in -fopenmp -xopenmp -openmp -mp -omp -qsmp=omp; do
-           ac_save_[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
-           _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $ac_option"
-           AC_LINK_IFELSE([_AC_LANG_OPENMP],
-             [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp=$ac_option])
-           _AC_LANG_PREFIX[]FLAGS=$ac_save_[]_AC_LANG_PREFIX[]FLAGS
-           if test "$ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp" != unsupported; then
-             break
-           fi
-         done])])
+         [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp='none needed'],
+         [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp='unsupported'
+          dnl Try these flags:
+          dnl   GCC >= 4.2           -fopenmp
+          dnl   SunPRO C             -xopenmp
+          dnl   Intel C              -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 -homp \
+                           -Popenmp --openmp; do
+            ac_save_[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
+            _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $ac_option"
+            AC_LINK_IFELSE([_AC_LANG_OPENMP],
+              [ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp=$ac_option])
+            _AC_LANG_PREFIX[]FLAGS=$ac_save_[]_AC_LANG_PREFIX[]FLAGS
+            if test "$ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp" != unsupported; then
+              break
+            fi
+          done])])
     case $ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp in #(
       "none needed" | unsupported)
         ;; #(