From 48470eaa0072d1ce6e4f407c014d18197f4cd5c3 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 5 Oct 2006 15:08:23 -0400
Subject: ENH: Enabling link-type selection flags on Cygwin, MSYS, and MinGW. 
 This addresses bug#1644 on these platforms.

---
 Modules/Platform/CYGWIN.cmake      | 10 ++++++++++
 Modules/Platform/Windows-gcc.cmake | 11 +++++++++++
 2 files changed, 21 insertions(+)

diff --git a/Modules/Platform/CYGWIN.cmake b/Modules/Platform/CYGWIN.cmake
index c7ccd98..0d508f0 100644
--- a/Modules/Platform/CYGWIN.cmake
+++ b/Modules/Platform/CYGWIN.cmake
@@ -27,4 +27,14 @@ SET(CMAKE_C_CREATE_SHARED_LIBRARY
   "<CMAKE_C_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> <OBJECTS> <LINK_LIBRARIES>")
 SET(CMAKE_CXX_CREATE_SHARED_LIBRARY
   "<CMAKE_CXX_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> <OBJECTS> <LINK_LIBRARIES>")
+
+# Initialize C link type selection flags.  These flags are used when
+# building a shared library, shared module, or executable that links
+# to other libraries to select whether to use the static or shared
+# versions of the libraries.
+FOREACH(type SHARED_LIBRARY SHARED_MODULE EXE)
+  SET(CMAKE_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic")
+  SET(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic")
+ENDFOREACH(type)
+
 INCLUDE(Platform/UnixPaths)
diff --git a/Modules/Platform/Windows-gcc.cmake b/Modules/Platform/Windows-gcc.cmake
index b3bf19f..a5152b3 100644
--- a/Modules/Platform/Windows-gcc.cmake
+++ b/Modules/Platform/Windows-gcc.cmake
@@ -34,3 +34,14 @@ SET(CMAKE_C_CREATE_SHARED_LIBRARY
   "<CMAKE_C_COMPILER> <CMAKE_SHARED_LIBRARY_C_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> <OBJECTS> <LINK_LIBRARIES>")
 SET(CMAKE_CXX_CREATE_SHARED_LIBRARY
   "<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> <OBJECTS> <LINK_LIBRARIES>")
+
+# Initialize C link type selection flags.  These flags are used when
+# building a shared library, shared module, or executable that links
+# to other libraries to select whether to use the static or shared
+# versions of the libraries.
+IF(MSYS OR MINGW)
+  FOREACH(type SHARED_LIBRARY SHARED_MODULE EXE)
+    SET(CMAKE_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic")
+    SET(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic")
+  ENDFOREACH(type)
+ENDIF(MSYS OR MINGW)
-- 
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