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[gnulib.git] / modules / link-warning

diff --git a/modules/link-warning b/modules/link-warning
index 5d702a7..935f66a 100644 (file)
--- a/modules/link-warning
+++ b/modules/link-warning
@@ -1,6 +1,9 @@
 Description:
 A C macro for emitting link time warnings.
 
+Applicability:
+all
+
 Files:
 build-aux/link-warning.h
 
@@ -9,7 +12,23 @@ Depends-on:
 configure.ac:
 
 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 '/GL_LINK_WARNING/,$$p' \
+         < $(top_srcdir)/build-aux/link-warning.h \
+         > $@-t && \
+       mv $@-t $@
+MOSTLYCLEANFILES += link-warning.h link-warning.h-t
+
+LINK_WARNING_H=link-warning.h
 
 Include: