Update the description of -no-undefined, required by libtool on Cygwin.

SVN-Revision: 183

diff --git a/Makefile.am b/Makefile.am
index b3ff51fa62a1652b285b7cfe06c47bca06ed93cd..1d3de5329c1f3b42510f9262178a1a970473daba 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -140,8 +140,9 @@ libarchive_la_SOURCES=                                              \
        libarchive/filter_fork.h
 
 libarchive_la_CPPFLAGS=-I $(top_builddir)/libarchive
-# cygwin barfs without -no-undefined; I don't know what it does or
-# whether it helps or hurts other platforms...
+# -no-undefined marks that libarchive doesn't rely on symbols
+# defined in the application.  This is required for cygwin and
+# seems to be ignored on other platforms.
 libarchive_la_LDFLAGS= -no-undefined -version-info $(ARCHIVE_LIBTOOL_VERSION)
 
 # Manpages to install