Module: Mesa
Branch: master
Commit: a2fe35bcdf3d383aaa5ad915b80630c8895d703d
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=a2fe35bcdf3d383aaa5ad915b80630c8895d703d
Author: Jose Fonseca <jfons...@vmware.com>
Date: Mon Apr 18 16:55:44 2016 +0100
scons: Support Clang on Windows.
- Introduce 'gcc_compat' env flag, for all compilers that define __GNUC__,
(which includes Clang when it's not emulating MSVC.)
- Clang doesn't support whole program optimization
- Disable enumerator value warnings (not sure why Clang warns about them,
as my understanding is that MSVC promotes enums to unsigned ints
automatically.)
This is not enough to build with Clang + AddressSanitizer though. More
follow up changes will be required for that.
Reviewed-by: Roland Scheidegger <srol...@vmware.com>
Reviewed-by: Brian Paul <bri...@vmware.com>
---
scons/gallium.py | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)
diff --git a/scons/gallium.py b/scons/gallium.py
index 1a81962..5fc082d 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -183,14 +183,15 @@ def generate(env):
# Detect gcc/clang not by executable name, but through pre-defined macros
# as autoconf does, to avoid drawing wrong conclusions when using tools
# that overrice CC/CXX like scan-build.
- env['gcc'] = 0
+ env['gcc_compat'] = 0
env['clang'] = 0
env['msvc'] = 0
if host_platform.system() == 'Windows':
env['msvc'] = check_cc(env, 'MSVC', 'defined(_MSC_VER)', '/E')
if not env['msvc']:
- env['gcc'] = check_cc(env, 'GCC', 'defined(__GNUC__) &&
!defined(__clang__)')
- env['clang'] = check_cc(env, 'Clang', '__clang__')
+ env['gcc_compat'] = check_cc(env, 'GCC', 'defined(__GNUC__)')
+ env['clang'] = check_cc(env, 'Clang', '__clang__')
+ env['gcc'] = env['gcc_compat'] and not env['clang']
env['suncc'] = env['platform'] == 'sunos' and os.path.basename(env['CC'])
== 'cc'
env['icc'] = 'icc' == os.path.basename(env['CC'])
@@ -203,7 +204,7 @@ def generate(env):
platform = env['platform']
x86 = env['machine'] == 'x86'
ppc = env['machine'] == 'ppc'
- gcc_compat = env['gcc'] or env['clang']
+ gcc_compat = env['gcc_compat']
msvc = env['msvc']
suncc = env['suncc']
icc = env['icc']
@@ -450,13 +451,13 @@ def generate(env):
'/O2', # optimize for speed
]
if env['build'] == 'release':
- ccflags += [
- '/GL', # enable whole program optimization
- ]
+ if not env['clang']:
+ ccflags += [
+ '/GL', # enable whole program optimization
+ ]
else:
ccflags += [
'/Oy-', # disable frame pointer omission
- '/GL-', # disable whole program optimization
]
ccflags += [
'/W3', # warning level
@@ -470,6 +471,10 @@ def generate(env):
'/wd4800', # forcing value to bool 'true' or 'false' (performance
warning)
'/wd4996', # disable deprecated POSIX name warnings
]
+ if env['clang']:
+ ccflags += [
+ '-Wno-microsoft-enum-value', # enumerator value is not
representable in underlying type 'int'
+ ]
if env['machine'] == 'x86':
ccflags += [
'/arch:SSE2', # use the SSE2 instructions (default since MSVC
2012)
@@ -556,7 +561,7 @@ def generate(env):
shlinkflags += ['-Wl,--enable-stdcall-fixup']
#shlinkflags += ['-Wl,--kill-at']
if msvc:
- if env['build'] == 'release':
+ if env['build'] == 'release' and not env['clang']:
# enable Link-time Code Generation
linkflags += ['/LTCG']
env.Append(ARFLAGS = ['/LTCG'])
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