debian/patches: Add 2004_enforce-lpthread.patch. On Debian, enforce -lpthread…

debian/patches/2004_enforce-lpthread.patch

+Description: Enforce -lpthread when linking nxcomp.
+Author: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
+Abstract:
+ This is a workaround for a nasty libtool bug!!!
+ .
+ We actually compile libXcomp with pthread support, but libtool uses g++
+ ... -nostdlib ... -pthread on Linux. -nostdlib causes -pthread to be
+ ignored.
+ .
+ According to GCC upstream, this is not a bug:
+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25460
+ .
+ GCC upstream insists that libtool needs to handle -pthread in a special
+ way when using -nostdlib.
+ .
+ A patch has been submitted to the libtool project:
+ http://lists.gnu.org/archive/html/libtool-patches/2013-11/msg00015.html
+ but never applied to the code base. Boo.
+ .
+ We will work around this bug by hard-coding the linking with pthread
+ support in libXcomp for now.
+
+--- a/nxcomp/src/Makefile.am
++++ b/nxcomp/src/Makefile.am
+@@ -139,7 +139,7 @@
+ libXcomp_la_LDFLAGS =					\
+     -version-number @LT_COMP_VERSION@			\
+     -no-undefined					\
+-    $(PTHREAD_LDFLAGS)					\
++    $(PTHREAD_LDFLAGS) -lpthread			\
+     $(NULL)
+ 
+ libXcompincludedir = $(includedir)/nx

debian/patches/series

 2001_nx-X11_install-location.debian.patch
 2002_xserver-xext_set-securitypolicy-path.debian.patch
 2003_nxdialog-use-python3.patch
+2004_enforce-lpthread.patch