X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=modules%2Flink-warning;h=06f3675cb1bd81d86448ca9c7f979020759a55d9;hb=c93f15eceb7bad3fd57d32ebf7f0676fb5fd3247;hp=5d702a7e82dea8a6435792258a3991731d9d34c3;hpb=a93995613cefd495026f726aaee716cc0996b9c4;p=gnulib.git

diff --git a/modules/link-warning b/modules/link-warning
index 5d702a7e8..06f3675cb 100644
--- a/modules/link-warning
+++ b/modules/link-warning
@@ -1,15 +1,36 @@
 Description:
 A C macro for emitting link time warnings.
 
+Applicability:
+all
+
 Files:
 build-aux/link-warning.h
 
 Depends-on:
 
 configure.ac:
+AC_REQUIRE([gl_FEATURES_H])
 
 Makefile.am:
-LINK_WARNING_H=$(top_srcdir)/build-aux/link-warning.h
+# The BUILT_SOURCES created by this Makefile snippet are not used via #include
+# statements but through direct file reference. Therefore this snippet must be
+# present in all Makefile.am that need it. This is ensured by the applicability
+# 'all' defined above.
+
+BUILT_SOURCES += link-warning.h
+# The link-warning.h that gets inserted into generated .h files is the same as
+# build-aux/link-warning.h, except that it has the copyright header cut off.
+link-warning.h: $(top_srcdir)/build-aux/link-warning.h
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	sed -n -e '/HAVE_FEATURES_H/,$$p' \
+	  < $(top_srcdir)/build-aux/link-warning.h \
+	| sed -e 's|@''HAVE_FEATURES_H''@|$(HAVE_FEATURES_H)|g' \
+	  > $@-t && \
+	mv $@-t $@
+MOSTLYCLEANFILES += link-warning.h link-warning.h-t
+
+LINK_WARNING_H=link-warning.h
 
 Include: