1 files changed, 54 insertions, 0 deletions
diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake
new file mode 100644
index 000000000..6aecf90e8
--- /dev/null
+++ b/Modules/Compiler/GNU.cmake
@@ -0,0 +1,54 @@
+
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+# This module is shared by multiple languages; use include blocker.
+if(__COMPILER_GNU)
+  return()
+endif()
+set(__COMPILER_GNU 1)
+
+macro(__compiler_gnu lang)
+  # Feature flags.
+  set(CMAKE_${lang}_VERBOSE_FLAG "-v")
+  set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC")
+  if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4)
+    set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE")
+  endif()
+  set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC")
+  set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared")
+
+  # Older versions of gcc (< 4.5) contain a bug causing them to report a missing
+  # header file as a warning if depfiles are enabled, causing check_header_file
+  # tests to always succeed.  Work around this by disabling dependency tracking
+  # in try_compile mode.
+  GET_PROPERTY(_IN_TC GLOBAL PROPERTY IN_TRY_COMPILE)
+  if(NOT _IN_TC OR CMAKE_FORCE_DEPFILES)
+    # distcc does not transform -o to -MT when invoking the preprocessor
+    # internally, as it ought to.  Work around this bug by setting -MT here
+    # even though it isn't strictly necessary.
+    set(CMAKE_DEPFILE_FLAGS_${lang} "-MMD -MT <OBJECT> -MF <DEPFILE>")
+  endif()
+
+  # Initial configuration flags.
+  set(CMAKE_${lang}_FLAGS_INIT "")
+  set(CMAKE_${lang}_FLAGS_DEBUG_INIT "-g")
+  set(CMAKE_${lang}_FLAGS_MINSIZEREL_INIT "-Os -DNDEBUG")
+  set(CMAKE_${lang}_FLAGS_RELEASE_INIT "-O3 -DNDEBUG")
+  set(CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT "-O2 -g")
+  set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
+  set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
+  if(NOT APPLE)
+    set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ")
+  endif(NOT APPLE)
+endmacro()