Don't touch configmake.h if it has not actually changed.

[pspp] / modules / configmake

diff --git a/modules/configmake b/modules/configmake
index a19d29bf0c24fa8b8e5c1d067d340910a4e1505f..2c5dfaab16d04069e79b0eafcec8bb6966e451f1 100644 (file)
--- a/modules/configmake
+++ b/modules/configmake
@@ -24,9 +24,9 @@ Makefile.am:
 #
 # Listed in the same order as the GNU makefile conventions.
 # The Automake-defined pkg* macros are appended, in the order
-# listed in the Automake documentation.
+# listed in the Automake 1.10a+ documentation.
 configmake.h: Makefile
-       rm -f $@-t $@
+       rm -f $@-t
        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
          echo '#define PREFIX "$(prefix)"'; \
          echo '#define EXEC_PREFIX "$(exec_prefix)"'; \
@@ -51,19 +51,26 @@ configmake.h: Makefile
          echo '#define LOCALEDIR "$(localedir)"'; \
          echo '#define MANDIR "$(mandir)"'; \
          echo '#define MANEXT "$(manext)"'; \
-         echo '#define PKGLIBDIR "$(pkglibdir)"'; \
-         echo '#define PKGINCLUDEDIR "$(pkgincludedir)"'; \
          echo '#define PKGDATADIR "$(pkgdatadir)"'; \
+         echo '#define PKGINCLUDEDIR "$(pkgincludedir)"'; \
+         echo '#define PKGLIBDIR "$(pkglibdir)"'; \
+         echo '#define PKGLIBEXECDIR "$(pkglibexecdir)"'; \
        } | sed '/""/d' > $@-t
-       mv $@-t $@
+       if test -f $@ && cmp $@-t $@ > /dev/null; then \
+         rm -f $@-t; \
+       else \
+         rm -f $@; mv $@-t $@; \
+       fi
+
 BUILT_SOURCES += configmake.h
 CLEANFILES += configmake.h configmake.h-t
 
 Include:
-"configmake.h"
+/* Include only after all system include files.  */
+#include "configmake.h"
 
 License:
-LGPL
+LGPLv2+
 
 Maintainer:
 all