fix sed script reading maint.mk

[gnulib.git] / top / GNUmakefile

diff --git a/top/GNUmakefile b/top/GNUmakefile
index 062900b..0fdd3fa 100644 (file)
--- a/top/GNUmakefile
+++ b/top/GNUmakefile
@@ -53,23 +53,39 @@ _autoreconf ?= autoreconf
 _have-git-version-gen := \
   $(shell test -f $(srcdir)/$(_build-aux)/git-version-gen && echo yes)
 ifeq ($(_have-git-version-gen)0,yes$(MAKELEVEL))
-  _is-dist-target = $(filter-out %clean, \
+  _is-dist-target ?= $(filter-out %clean, \
     $(filter maintainer-% dist% alpha beta major,$(MAKECMDGOALS)))
-  ifneq (,$(_is-dist-target))
-    _curr-ver := $(shell cd $(srcdir) && ./$(_build-aux)/git-version-gen \
-                   $(srcdir)/.tarball-version)
+  _is-install-target ?= $(filter-out %check, $(filter install%,$(MAKECMDGOALS)))
+  ifneq (,$(_is-dist-target)$(_is-install-target))
+    _curr-ver := $(shell cd $(srcdir) \
+                   && $(_build-aux)/git-version-gen .tarball-version)
     ifneq ($(_curr-ver),$(VERSION))
       ifeq ($(_curr-ver),UNKNOWN)
         $(info WARNING: unable to verify if $(VERSION) is correct version)
       else
-        $(info INFO: running autoreconf for new version string: $(_curr-ver))
-        _dummy := $(shell cd $(srcdir) && rm -rf autom4te.cache .version \
-          && $(_autoreconf))
+        ifneq (,$(_is-install-target))
+          # GNU Coding Standards state that 'make install' should not cause
+          # recompilation after 'make all'.  But as long as changing the version
+          # string alters config.h, the cost of having 'make all' always have an
+          # up-to-date version is prohibitive.  So, as a compromise, we merely
+          # warn when installing a version string that is out of date; the user
+          # should run 'autoreconf' (or something like 'make distcheck') to
+          # fix the version, 'make all' to propagate it, then 'make install'.
+          $(info WARNING: version string $(VERSION) is out of date;)
+          $(info run '$(MAKE) _version' to fix it)
+        else
+          $(info INFO: running autoreconf for new version string: $(_curr-ver))
+          _dummy := $(shell $(MAKE) $(AM_MAKEFLAGS) _version)
+        endif
       endif
     endif
   endif
 endif
 
+.PHONY: _version
+_version:
+       cd $(srcdir) && rm -rf autom4te.cache .version && $(_autoreconf)
+
 else
 
 .DEFAULT_GOAL := abort-due-to-no-makefile