configure: fix calls to get_version when the path contains spaces

Refs #412

Signed-off-by: Brice Goglin <[email protected]>

Author: bgoglin

config/hwloc.m4

@@ -81,7 +81,7 @@ EOF])
 
     # Get the version of hwloc that we are installing
     AC_MSG_CHECKING([for hwloc version])
-    HWLOC_VERSION="`sh $HWLOC_top_srcdir/config/hwloc_get_version.sh $HWLOC_top_srcdir/VERSION`"
+    HWLOC_VERSION=`sh "$HWLOC_top_srcdir/config/hwloc_get_version.sh" "$HWLOC_top_srcdir/VERSION"`
     if test "$?" != "0"; then
         AC_MSG_ERROR([Cannot continue])
     fi
@@ -90,16 +90,16 @@ EOF])
     AC_DEFINE_UNQUOTED([HWLOC_VERSION], ["$HWLOC_VERSION"],
                        [The library version, always available, even in embedded mode, contrary to VERSION])
 
-    HWLOC_VERSION_MAJOR="`sh $HWLOC_top_srcdir/config/hwloc_get_version.sh $HWLOC_top_srcdir/VERSION --major`"
+    HWLOC_VERSION_MAJOR=`sh "$HWLOC_top_srcdir/config/hwloc_get_version.sh" "$HWLOC_top_srcdir/VERSION" --major`
     AC_DEFINE_UNQUOTED([HWLOC_VERSION_MAJOR], [$HWLOC_VERSION_MAJOR], [The library version major number])
-    HWLOC_VERSION_MINOR="`sh $HWLOC_top_srcdir/config/hwloc_get_version.sh $HWLOC_top_srcdir/VERSION --minor`"
+    HWLOC_VERSION_MINOR=`sh "$HWLOC_top_srcdir/config/hwloc_get_version.sh" "$HWLOC_top_srcdir/VERSION" --minor`
     AC_DEFINE_UNQUOTED([HWLOC_VERSION_MINOR], [$HWLOC_VERSION_MINOR], [The library version minor number])
-    HWLOC_VERSION_RELEASE="`sh $HWLOC_top_srcdir/config/hwloc_get_version.sh $HWLOC_top_srcdir/VERSION --release`"
+    HWLOC_VERSION_RELEASE=`sh "$HWLOC_top_srcdir/config/hwloc_get_version.sh" "$HWLOC_top_srcdir/VERSION" --release`
     AC_DEFINE_UNQUOTED([HWLOC_VERSION_RELEASE], [$HWLOC_VERSION_RELEASE], [The library version release number])
-    HWLOC_VERSION_GREEK="`sh $HWLOC_top_srcdir/config/hwloc_get_version.sh $HWLOC_top_srcdir/VERSION --greek`"
+    HWLOC_VERSION_GREEK=`sh "$HWLOC_top_srcdir/config/hwloc_get_version.sh" "$HWLOC_top_srcdir/VERSION" --greek`
     AC_DEFINE_UNQUOTED([HWLOC_VERSION_GREEK], ["$HWLOC_VERSION_GREEK"], [The library version optional greek suffix string])
 
-    HWLOC_RELEASE_DATE="`sh $HWLOC_top_srcdir/config/hwloc_get_version.sh $HWLOC_top_srcdir/VERSION --release-date`"
+    HWLOC_RELEASE_DATE=`sh "$HWLOC_top_srcdir/config/hwloc_get_version.sh" "$HWLOC_top_srcdir/VERSION" --release-date`
     AC_SUBST(HWLOC_RELEASE_DATE)
 
     # Debug mode?