This prevents the MSVC from
warning C4090: 'function' : different 'const' qualifiers
when compiling flex generated lexers.
---
scons/gallium.py | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/scons/gallium.py b/scons/gallium.py
index 2b11526..9924f1e 100755
--- a/scons/gallium.py
+++ b/scons/gallium.py
@@ -622,6 +622,14 @@ def generate(env):
# Load tools
env.Tool('lex')
+ if env['msvc']:
+ env.Append(LEXFLAGS = [
+ # Force flex to use const keyword in prototypes, as relies on
+ # __cplusplus or __STDC__ macro to determine whether it's safe to
+ # use const keyword, but MSVC never defines __STDC__ unless we
+ # disable all MSVC extensions.
+ '-DYY_USE_CONST=',
+ ])
env.Tool('yacc')
if env['llvm']:
env.Tool('llvm')
--
2.1.0
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