Demos (cmake): cmake: MSVC portability fixes.

[Jose Fonseca]

Module: Demos
Branch: cmake
Commit: c5cd31b175e39e1ed1eb03bdc99f27601ba79068
URL:    http://cgit.freedesktop.org/mesa/demos/commit/?id=c5cd31b175e39e1ed1eb03bdc99f27601ba79068

Author: José Fonseca <jfonseca at vmware.com>
Date:   Tue Nov  9 12:59:21 2010 +0000

cmake: MSVC portability fixes.

---

 CMakeLists.txt |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 852a887..1426ce1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,30 @@ find_path (GLEW_INCLUDE_DIR GL/glew.h
 )
 
 if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
+	# Nobody likes to include windows.h:
+	# - Microsoft's GL/gl.h header depends on windows.h but doesn't include it;
+	# - GLEW temporarily defines the necessary defines but undefines them later
+	# - certain GLUT distributions don't include it;
+	# - most of our programs are meant to be portable so don't include it.
+	#
+	# We could try to replicate the windows.h definitions required by
+	# GL/gl.h, but the build time savings don't compensate the constant
+	# headaches that brings, so instead we force windows.h to be included
+	# on every file.
+	if (MSVC)
+		add_definitions (-FIwindows.h)
+	else (MSVC)
+		add_definitions (--include windows.h)
+	endif (MSVC)
+
 	link_libraries (winmm)
 endif (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
 
+if (MSVC)
+	# Silence several MSVC pedantic warnings
+	add_definitions (-D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -DCRT_NONSTDC_NO_WARNINGS)
+	add_definitions (-D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS)
+	add_definitions (-wd4244) # conversion' conversion from 'type1' to 'type2', possible loss of data
+endif (MSVC)
+
 add_subdirectory (src)