[Gmsh] patching CMakeLists.txt for TAUCS

[Joseph Mingrone]

Hello,

There is a linking issue with the FreeBSD gmsh package when TAUCS is enabled.  Here is a build snippet.

----
CMakeFiles/gmsh.dir/contrib/taucs/G/taucs_timer.c.o: In function `taucs_wtime':
/wrkdirs/usr/ports/cad/gmsh/work/gmsh-2.13.2-source/contrib/taucs/G/taucs_timer.c:(.text+0xd): undefined reference to `ftime'
----

I believe adding '-lcompat' when linking gmsh solves the problem.  How can cmake be instructed to do this?

I tried patching CMakeLists.txt as below, but without success.

Regards,

Joseph

--- CMakeLists.txt.orig	2016-08-31 20:17:30 UTC
+++ CMakeLists.txt
@@ -887,6 +887,10 @@ if(HAVE_SOLVER)
       else(WIN32)
         add_definitions(-DOSTYPE_linux)
       endif(WIN32 OR CYGWIN)
+      find_library(COMPAT_LIB compat)
+      if(COMPAT_LIB)
+        list(APPEND LINK_LIBRARIES ${COMPAT_LIB})
+      endif(COMPAT_LIB)
       file(GLOB_RECURSE TAUCS_D ${CMAKE_CURRENT_BINARY_DIR}/contrib/taucs/D/*.c)
       file(GLOB_RECURSE TAUCS_S ${CMAKE_CURRENT_BINARY_DIR}/contrib/taucs/S/*.c)
       file(GLOB_RECURSE TAUCS_Z ${CMAKE_CURRENT_BINARY_DIR}/contrib/taucs/Z/*.c)

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