[ptxdist] [PATCH 5/5] configrue.ac: add check for md5sum from GNU coreutils

["Andreas Bießmann" <andreas@biessmann.de>]

Signed-off-by: Andreas Bießmann <andreas@biessmann.de>
---
 Makefile.in  |    1 +
 configure.ac |    9 +++++++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 3c9441c..53d4f83 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -81,6 +81,7 @@ install-environment: all dirty-check
 	@ln -sf @GNUCHMOD@ $(DESTDIR)$(instdir)/bin/chmod
 	@ln -sf @GNUMV@ $(DESTDIR)$(instdir)/bin/mv
 	@ln -sf @GNURM@ $(DESTDIR)$(instdir)/bin/rm
+	@ln -sf @GNUMD5SUM@ $(DESTDIR)$(instdir)/bin/md5sum
 
 dist: dirty-check
 	@rm -rf "$(project)"
diff --git a/configure.ac b/configure.ac
index 731e1f2..0c943ff 100644
--- a/configure.ac
+++ b/configure.ac
@@ -160,6 +160,15 @@ AC_CACHE_CHECK([for rm from GNU coreutils], [ac_cv_path_GNURM],
                                              [AC_MSG_ERROR([could not find rm from GNU coreutils])])])
 AC_SUBST([GNURM], [$ac_cv_path_GNURM])
 
+dnl check for md5sum GNU version
+AC_CACHE_CHECK([for md5sum from GNU coreutils], [ac_cv_path_GNUMD5SUM],
+               [AC_PATH_PROGS_FEATURE_CHECK([GNUMD5SUM], [gmd5sum md5sum.gnu md5sum],
+                                            [[gnumd5sumout=`$ac_path_GNUMD5SUM --version 2>/dev/null | $SED -ne "s/.*\(GNU\) coreutils.*/\1/p"`
+                                             test "x$gnumd5sumout" = xGNU \
+                                                 && ac_cv_path_GNUMD5SUM=$ac_path_GNUMD5SUM ac_path_GNUMD5SUM_found=:]],
+                                             [AC_MSG_ERROR([could not find md5sum from GNU coreutils])])])
+AC_SUBST([GNUMD5SUM], [$ac_cv_path_GNUMD5SUM])
+
 dnl Check for egrep
 AC_PROG_EGREP
 
-- 
1.7.7


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