# must come before any header checks
STEPMAKE_COMPILE
-STEPMAKE_PYTHON(REQUIRED,2.0)
+STEPMAKE_PYTHON(REQUIRED,2.1)
STEPMAKE_GCC(REQUIRED, 2.8)
STEPMAKE_CXX(REQUIRED)
STEPMAKE_GXX(REQUIRED, 2.95)
STEPMAKE_CXXTEMPLATE
STEPMAKE_LIB(REQUIRED)
+# Do not use bison 1.50 and 1.75.
STEPMAKE_BISON(REQUIRED, 1.25)
STEPMAKE_FLEX(REQUIRED)
STEPMAKE_FLEXLEXER(REQUIRED)