From: Nick Bowler <nbowler@draconx.ca>
Date: Thu, 22 Sep 2011 00:58:27 +0000 (-0400)
Subject: Avoid gratuitous library dependencies linking gnulib.
X-Git-Url: https://git.draconx.ca/gitweb/dxcommon.git/commitdiff_plain/03d1aa34d110422a3f7e41977c97b567095f064f

Avoid gratuitous library dependencies linking gnulib.

libcdecl doesn't use the readline module at all, but libtool happily
pulls it in as a dependency.  Handle library dependencies manually to
avoid this problem.
---

diff --git a/scripts/fix-gnulib.pl b/scripts/fix-gnulib.pl
index b8185fa..834fb7a 100755
--- a/scripts/fix-gnulib.pl
+++ b/scripts/fix-gnulib.pl
@@ -111,6 +111,14 @@ EOF
 	# useful for non-recursive builds.  Strip them out.
 	drop if (/^(AM_CPPFLAGS|AM_CFLAGS)/);
 
+	# Library dependencies are added automatically to libgnu.la by
+	# gnulib-tool.  Unfortunately, this means that everything linking
+	# against libgnu.la is forced to pull in the same deps, even if they're
+	# unneeded.  Furthermore, a libtool linker flag reordering bug prevents
+	# --as-needed from stripping out the useless deps, so it's better to
+	# handle them all manually.
+	drop if (/LDFLAGS/);
+
 	# Rewrite automake hook targets to be more generic.
 	if (s/^(.*)-local:/\1-gnulib:/) {
 		print ".PHONY: $1-gnulib\n";