btrfs-progs: autogen: Don't show success message on fail

When autogen.sh failed, the success message is still in output:
 # ./autogen.sh
 ...
 configure.ac:131: error: possibly undefined macro: PKG_CHECK_VAR
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.

 Now type './configure' and 'make' to compile.
 #

Fixed by check return value of autoconf.

After patch:
 # ./autogen.sh
 ...
 configure.ac:132: error: possibly undefined macro: PKG_CHECK_VAR
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
 #

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/autogen.sh b/autogen.sh
index 8b9a9cbe..a5f9af24 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -64,9 +64,10 @@ echo "   automake:   $(automake --version | head -1)"
 chmod +x version.sh
 rm -rf autom4te.cache
 
-aclocal $AL_OPTS
-autoconf $AC_OPTS
-autoheader $AH_OPTS
+aclocal $AL_OPTS &&
+autoconf $AC_OPTS &&
+autoheader $AH_OPTS ||
+exit 1
 
 # it's better to use helper files from automake installation than
 # maintain copies in git tree