From 0692323fe0f0bbbb5ba325e21d0f155717436f84 Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Tue, 22 Oct 2002 15:04:52 -0400
Subject: [PATCH] *** empty log message ***

---
 Modules/CMakeDetermineCCompiler.cmake        |  6 +++
 Modules/CMakeSystemSpecificInformation.cmake | 45 ++++++++++++++++++--
 Modules/CYGWIN.cmake                         |  4 ++
 3 files changed, 51 insertions(+), 4 deletions(-)
 create mode 100644 Modules/CYGWIN.cmake

diff --git a/Modules/CMakeDetermineCCompiler.cmake b/Modules/CMakeDetermineCCompiler.cmake
index 100412a81..c1fc85c7a 100644
--- a/Modules/CMakeDetermineCCompiler.cmake
+++ b/Modules/CMakeDetermineCCompiler.cmake
@@ -3,3 +3,9 @@
 # loading this file to force a compiler.
 
 FIND_PROGRAM(CMAKE_C_COMPILER NAMES $ENV{CC} gcc cc cl bcc PATHS /bin /usr/bin /usr/local/bin )
+
+
+# to check for is gnu we need to compile this:
+#  #ifdef __GNUC__
+#  yes;
+#  #endif
diff --git a/Modules/CMakeSystemSpecificInformation.cmake b/Modules/CMakeSystemSpecificInformation.cmake
index 1615d9f64..3fcaf5ecb 100644
--- a/Modules/CMakeSystemSpecificInformation.cmake
+++ b/Modules/CMakeSystemSpecificInformation.cmake
@@ -8,11 +8,25 @@
 
 
 # 1. set default values that will work for most system
-SET(CMAKE_CXX_CREATE_SHARED_LIBRARY
-    "${CMAKE_CXX_COMPILE} ${CMAKE_SHARED_LIBRARY_CREATE_FLAGS} ${CMAKE_CXX_LINK_SHARED_OUT_FLAG} <TARGET> <OBJECTS>")
+SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")            # -pic 
+SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "")          # -pic
+# for gnu compiler always 
+  
+SET(CMAKE_SHARED_LIBRARY_CREATE_FLAGS "")       # -shared
+SET(CMAKE_SHARED_LIBRARY_PREFIX "lib")          # lib
+SET(CMAKE_SHARED_LIBRARY_SUFFIX ".so")          # .so
+SET(CMAKE_SHARED_LIBRARY_LINK_FLAGS "")         # +s, or some flag that an exe needs to use a shared lib
+SET(CMAKE_SHARED_LIBRARY_RUNTIME_FLAG "")       # -rpath
+SET(CMAKE_SHARED_LIBRARY_RUNTIME_FLAG_SEP "")   # : or empty
 
-SET(CMAKE_CXX_CREATE_AR_LIBRARY
-    "${CMAKE_AR} ${CMAKE_AR_FLAGS} <TARGET> <OBJECTS>")
+IF(CMAKE_COMPILER_IS_GNUGXX)
+  SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")     # -pic 
+  SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-fPIC")   # -pic
+ENDIF(CMAKE_COMPILER_IS_GNUGXX)
+
+
+SET (CMAKE_SKIP_RPATH "NO" CACHE BOOL
+     "If set, runtime paths are not added when using shared libraries.")
 
 # 2. now include SystemName.cmake file to set the system specific information
 SET(CMAKE_SYSTEM_INFO_FILE ${CMAKE_ROOT}/Modules/${CMAKE_SYSTEM_NAME}.cmake)
@@ -25,6 +39,29 @@ ELSE(EXISTS ${CMAKE_SYSTEM_INFO_FILE})
 ENDIF(EXISTS ${CMAKE_SYSTEM_INFO_FILE})
 
 
+
+# Set up default values for things that have not been set either
+# in SYSTEM.cmake or SYSTEM-compiler.cmake
+
+IF(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
+  SET(CMAKE_CXX_CREATE_SHARED_LIBRARY
+      "${CMAKE_CXX_COMPILE} ${CMAKE_SHARED_LIBRARY_CREATE_FLAGS} "
+      "${CMAKE_CXX_LINK_SHARED_OUT_FLAG} <TARGET> <OBJECTS>")
+ENDIF(NOT CMAKE_CXX_CREATE_SHARED_LIBRARY)
+
+
+IF(NOT CMAKE_CXX_CREATE_STATIC_LIBRARY)
+  SET(CMAKE_CXX_CREATE_STATIC_LIBRARY
+      "${CMAKE_CXX_AR} ${CMAKE_AR_FLAGS} <TARGET> <OBJECTS>")
+ENDIF(NOT CMAKE_CXX_CREATE_STATIC_LIBRARY)
+
+
+IF(NOT CMAKE_CXX_COMPILE)
+  SET(CMAKE_CXX_COMPILE
+    "${CMAKE_CXX_COMPILER} -o <OBJECT> ${CMAKE_CXX_FLAGS} -c <SOURCE>")
+ENDIF(NOT CMAKE_CXX_COMPILE)
+
+
 # 3. include optional systemname-compiler.cmake files
 IF(CMAKE_C_COMPILER)
   INCLUDE(${CMAKE_ROOT}/Modules/${CMAKE_SYSTEM_NAME}-${CMAKE_C_COMPILER}.cmake OPTIONAL)
diff --git a/Modules/CYGWIN.cmake b/Modules/CYGWIN.cmake
new file mode 100644
index 000000000..6d18a7383
--- /dev/null
+++ b/Modules/CYGWIN.cmake
@@ -0,0 +1,4 @@
+SET(CMAKE_SHARED_LIBRARY_CREATE_FLAGS "-shared")
+SET(CMAKE_DL_LIBS "-lgdi32" )
+SET(CMAKE_SHARED_LIBRARY_PREFIX "")
+SET(CMAKE_SHARED_LIBRARY_SUFFIX ".dll")