After three iterations of community review, we believe that this new

CMAKE buld system should meet everyone's requirements.

Enhanced CMake Build System Commit 

* Supports Linux, Mac, Windows, and Intel® Xeon Phi builds
* Supports building with gcc, icc, clang, and Visual Studio compilers
* Supports bulding "fat" libraries on OS/X with clang
* Details and documentation on how to use build system 
  are in Build_With_CMake.txt
* To use the old CMake build system (corresponds to 
  CMakeLists.txt.old), just rename CMakeLists.txt to
  CMakeLists.txt.other and rename CMakeLists.txt.old to
  CMakeLists.txt

llvm-svn: 214850

1 files changed, 64 insertions, 0 deletions

diff --git a/openmp/runtime/cmake/MSVC/CFlags.cmake b/openmp/runtime/cmake/MSVC/CFlags.cmake
new file mode 100644
index 00000000000..b76147a0ded
--- /dev/null
+++ b/openmp/runtime/cmake/MSVC/CFlags.cmake
@@ -0,0 +1,64 @@
+# This file holds Microsoft Visual Studio dependent flags
+# The flag types are:
+#   1) C/C++ Compiler flags
+#   2) Fortran Compiler flags
+
+#########################################################
+# Visual Studio C/C++ Compiler flags
+function(append_compiler_specific_c_and_cxx_flags input_c_flags input_cxx_flags)
+    set(local_c_flags)
+    set(local_cxx_flags)
+    append_c_flags("-TP") # Tells the compiler to process a file as a C++ source file.
+    append_cxx_flags("-EHsc") # Enable C++ exception handling.
+    append_c_and_cxx_flags("-W3") # Enables diagnostics for remarks, warnings, and errors. 
+                                  # Additional warnings are also enabled above level 2 warnings.
+    append_c_and_cxx_flags("-GS") # Lets you control the threshold at which the stack checking routine is called or not called.
+    if(${IA32})
+        append_c_and_cxx_flags("-arch:ia32") # Tells the compiler which features it may target (ia32)
+        append_c_and_cxx_flags("-Oy-") # equivalent to -fno-omit-frame-pointer
+    endif()
+    # CMake prefers the /MD flags when compiling Windows sources, but libiomp5 needs to use /MT instead
+    # So we replace these /MD instances with /MT within the CMAKE_*_FLAGS variables and put that out to the CACHE.
+    # replace_md_with_mt() is in HelperFunctions.cmake
+    replace_md_with_mt(CMAKE_C_FLAGS)
+    replace_md_with_mt(CMAKE_C_FLAGS_RELEASE)
+    replace_md_with_mt(CMAKE_C_FLAGS_RELWITHDEBINFO)
+    replace_md_with_mt(CMAKE_C_FLAGS_DEBUG)
+    replace_md_with_mt(CMAKE_CXX_FLAGS)
+    replace_md_with_mt(CMAKE_CXX_FLAGS_RELEASE)
+    replace_md_with_mt(CMAKE_CXX_FLAGS_RELWITHDEBINFO)
+    replace_md_with_mt(CMAKE_CXX_FLAGS_DEBUG)
+    replace_md_with_mt(CMAKE_ASM_MASM_FLAGS)
+    replace_md_with_mt(CMAKE_ASM_MASM_FLAGS_RELEASE)
+    replace_md_with_mt(CMAKE_ASM_MASM_FLAGS_RELWITHDEBINFO)
+    replace_md_with_mt(CMAKE_ASM_MASM_FLAGS_DEBUG)
+    set(${input_c_flags}   ${${input_c_flags}}   "${local_c_flags}" PARENT_SCOPE)
+    set(${input_cxx_flags} ${${input_cxx_flags}} "${local_cxx_flags}" PARENT_SCOPE)
+endfunction()
+
+#########################################################
+# Visual Studio Linker flags
+function(append_compiler_specific_linker_flags input_ld_flags input_ld_flags_libs)
+    set(local_ld_flags)
+    set(local_ld_flags_libs)
+    append_linker_flags("-WX:NO")
+    append_linker_flags("-version:${version}.0")
+    append_linker_flags("-NXCompat")
+    append_linker_flags("-DynamicBase") # This option modifies the header of an executable to indicate 
+                                           # whether the application should be randomly rebased at load time.
+    if(${IA32})
+        append_linker_flags("-machine:i386")
+        append_linker_flags("-safeseh")
+    elseif(${INTEL64})
+        append_linker_flags("-machine:amd64")
+    endif()
+    if(NOT "${def_file}" STREQUAL "")
+        append_linker_flags("-def:${def_file}")
+    endif()
+    # Have Visual Studio use link.exe directly
+    #set(CMAKE_C_CREATE_SHARED_LIBRARY "link.exe /out:<TARGET> <LINK_FLAGS> <OBJECTS> <LINK_LIBRARIES>" PARENT_SCOPE)
+    #set(CMAKE_SHARED_LINKER_FLAGS "$ENV{LDLFAGS}" CACHE STRING "Linker Flags" FORCE)
+    set(${input_ld_flags}      ${${input_ld_flags}}      "${local_ld_flags}"       PARENT_SCOPE)
+    set(${input_ld_flags_libs} ${${input_ld_flags_libs}} "${local_ld_flags_libs}"  PARENT_SCOPE)
+endfunction()
+