Fixes 64 bit MSVC builds, disables bits parameter
Also Enables automatic detection of architecture for the MSVC compilers. Builds without assembly optimisations for x64 Closes issue #3098 Signed-off-by: Aleksandar Danilovic <greatgames.alexandar@gmail.com>
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Aleksandar Danilovic
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d454e64f42
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7762e1afe6
1 changed files with 89 additions and 0 deletions
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@ -262,7 +262,33 @@ def configure(env):
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env.Append(CCFLAGS=["/I"+DIRECTX_PATH+"/Include"])
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env.Append(LIBPATH=[DIRECTX_PATH+"/Lib/x86"])
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env['ENV'] = os.environ;
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# This detection function needs the tools env (that is env['ENV'], not SCons's env), and that is why it's this far bellow in the code
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compiler_version_str = detect_visual_c_compiler_version(env['ENV'])
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# Note: this detection/override code from here onward should be here instead of in SConstruct because it's platform and compiler specific (MSVC/Windows)
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if(env["bits"] != "default"):
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print "Error: bits argument is disabled for MSVC"
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print ("Bits argument is not supported for MSVC compilation. Architecture depends on the Native/Cross Compile Tools Prompt/Developer Console (or Visual Studio settings)"
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+" that is being used to run SCons. As a consequence, bits argument is disabled. Run scons again without bits argument (example: scons p=windows) and SCons will attempt to detect what MSVC compiler"
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+" will be executed and inform you.")
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sys.exit()
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# Forcing bits argument because MSVC does not have a flag to set this through SCons... it's different compilers (cl.exe's) called from the propper command prompt
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# that decide the architecture that is build for. Scons can only detect the os.getenviron (because vsvarsall.bat sets a lot of stuff for cl.exe to work with)
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env["bits"]="32"
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env["x86_opt_vc"]=True
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print "Detected MSVC compiler: "+compiler_version_str
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# If building for 64bit architecture, disable assembly optimisations for 32 bit builds (theora as of writting)... vc compiler for 64bit can not compile _asm
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if(compiler_version_str == "amd64" or compiler_version_str == "x86_amd64"):
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env["bits"]="64"
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env["x86_opt_vc"]=False
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print "Compiled program architecture will be a 64 bit executable (forcing bits=64)."
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elif (compiler_version_str=="x86" or compiler_version_str == "amd64_x86"):
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print "Compiled program architecture will be a 32 bit executable. (forcing bits=32)."
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else:
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print "Failed to detect MSVC compiler architecture version... Defaulting to 32bit executable settings (forcing bits=32). Compilation attempt will continue, but SCons can not detect for what architecture this build is compiled for. You should check your settings/compilation setup."
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else:
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# Workaround for MinGW. See:
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@ -366,4 +392,67 @@ def configure(env):
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env.Append( BUILDERS = { 'HLSL9' : env.Builder(action = methods.build_hlsl_dx9_headers, suffix = 'hlsl.h',src_suffix = '.hlsl') } )
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env.Append( BUILDERS = { 'GLSL120GLES' : env.Builder(action = methods.build_gles2_headers, suffix = 'glsl.h',src_suffix = '.glsl') } )
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def detect_visual_c_compiler_version(tools_env):
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# tools_env is the variable scons uses to call tools that execute tasks, SCons's env['ENV'] that executes tasks...
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# (see the SCons documentation for more information on what it does)...
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# in order for this function to be well encapsulated i choose to force it to recieve SCons's TOOLS env (env['ENV']
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# and not scons setup environment (env)... so make sure you call the right environment on it or it will fail to detect
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# the propper vc version that will be called
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# These is no flag to give to visual c compilers to set the architecture, ie scons bits argument (32,64,ARM etc)
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# There are many different cl.exe files that are run, and each one compiles & links to a different architecture
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# As far as I know, the only way to figure out what compiler will be run when Scons calls cl.exe via Program()
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# is to check the PATH varaible and figure out which one will be called first. Code bellow does that and returns:
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# the following string values:
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# "" Compiler not detected
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# "amd64" Native 64 bit compiler
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# "amd64_x86" 64 bit Cross Compiler for 32 bit
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# "x86" Native 32 bit compiler
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# "x86_amd64" 32 bit Cross Compiler for 64 bit
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# There are other architectures, but Godot does not support them currently, so this function does not detect arm/amd64_arm
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# and similar architectures/compilers
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# Set chosen compiler to "not detected"
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vc_chosen_compiler_index = -1
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vc_chosen_compiler_str = ""
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# find() works with -1 so big ifs bellow are needed... the simplest solution, in fact
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# First test if amd64 and amd64_x86 compilers are present in the path
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vc_amd64_compiler_detection_index = tools_env["PATH"].find(tools_env["VCINSTALLDIR"]+"BIN\\amd64;")
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if(vc_amd64_compiler_detection_index > -1):
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vc_chosen_compiler_index = vc_amd64_compiler_detection_index
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vc_chosen_compiler_str = "amd64"
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vc_amd64_x86_compiler_detection_index = tools_env["PATH"].find(tools_env["VCINSTALLDIR"]+"BIN\\amd64_x86;")
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if(vc_amd64_x86_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_amd64_x86_compiler_detection_index)):
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vc_chosen_compiler_index = vc_amd64_x86_compiler_detection_index
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vc_chosen_compiler_str = "amd64_x86"
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# Now check the 32 bit compilers
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vc_x86_compiler_detection_index = tools_env["PATH"].find(tools_env["VCINSTALLDIR"]+"BIN;")
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if(vc_x86_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_x86_compiler_detection_index)):
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vc_chosen_compiler_index = vc_x86_compiler_detection_index
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vc_chosen_compiler_str = "x86"
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vc_x86_amd64_compiler_detection_index = tools_env["PATH"].find(tools_env['VCINSTALLDIR']+"BIN\\x86_amd64;")
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if(vc_x86_amd64_compiler_detection_index > -1
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and (vc_chosen_compiler_index == -1
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or vc_chosen_compiler_index > vc_x86_amd64_compiler_detection_index)):
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vc_chosen_compiler_index = vc_x86_amd64_compiler_detection_index
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vc_chosen_compiler_str = "x86_amd64"
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# debug help
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#print vc_amd64_compiler_detection_index
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#print vc_amd64_x86_compiler_detection_index
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#print vc_x86_compiler_detection_index
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#print vc_x86_amd64_compiler_detection_index
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#print "chosen "+str(vc_chosen_compiler_index)+ " | "+str(vc_chosen_compiler_str)
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return vc_chosen_compiler_str
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