scons: set YACCHXXFILESUFFIX to stop needless rebuilding of the parser

Before, the GLSL parser was getting rebuilt every time that scons was
run.  The problem was scons was expecting a glsl_parser.hpp file but
we were generating a glsl_parser.h file.

Signed-off-by: Brian Paul <brianp@vmware.com>

diff --git a/src/glsl/SConscript b/src/glsl/SConscript
index 2fc57c6..0855c67 100644 (file)
--- a/src/glsl/SConscript
+++ b/src/glsl/SConscript
@@ -25,6 +25,10 @@ parser_env.Append(YACCFLAGS = [
     '-p', '_mesa_glsl_',
 ])
 
+# without this line scons will expect "glsl_parser.hpp" instead of
+# "glsl_parser.h", causing glsl_parser.cpp to be regenerated every time
+parser_env['YACCHXXFILESUFFIX'] = '.h'
+
 glcpp_lexer = env.CFile('glcpp/glcpp-lex.c', 'glcpp/glcpp-lex.l')
 glcpp_parser = env.CFile('glcpp/glcpp-parse.c', 'glcpp/glcpp-parse.y')
 glsl_lexer = parser_env.CXXFile('glsl_lexer.cpp', 'glsl_lexer.ll')