$NetBSD: patch-libgambatte_SConstruct,v 1.4 2024/04/19 12:04:23 nia Exp $

Copy environment to SCons environment.

--- libgambatte/SConstruct.orig	2024-04-15 16:11:45.938327465 +0000
+++ libgambatte/SConstruct
@@ -1,14 +1,9 @@
-global_cflags = ARGUMENTS.get('CFLAGS', '-Wall -Wextra -O2 -fomit-frame-pointer')
-global_cxxflags = ARGUMENTS.get('CXXFLAGS', global_cflags + ' -fno-exceptions -fno-rtti')
-global_defines = ' -DHAVE_STDINT_H'
-vars = Variables()
-vars.Add('CC')
-vars.Add('CXX')
+import SCons
+import subprocess
+import os
 
 env = Environment(CPPPATH = ['src', 'include', '../common'],
-                  CFLAGS = global_cflags + global_defines,
-                  CXXFLAGS = global_cxxflags + global_defines,
-                  variables = vars)
+                  CPPDEFINES = [ 'HAVE_STDINT_H', None ])
 
 sourceFiles = Split('''
 			src/bitmap_font.cpp
@@ -42,6 +37,24 @@ sourceFiles = Split('''
 			src/video/sprite_mapper.cpp
 		   ''')
 
+
+# copy environment variables because scons doesn't do this by default
+for var in ["CC","CXX","LD","LIBPATH","STRIP"]:
+	if var in os.environ:
+		env[var] = os.environ[var]
+		print("copying environment variable {0}={1!r}".format(var,os.environ[var]))
+
+# variables containing several space separated things
+for var in ["CFLAGS","CCFLAGS","CXXFLAGS","LINKFLAGS","CPPDEFINES","CPPPATH"]:
+	if var in os.environ:
+		if var in env:
+			env[var] += SCons.Util.CLVar(os.environ[var])
+		else:
+			env[var] = SCons.Util.CLVar(os.environ[var])
+		print("copying environment variable {0}={1!r}".format(var,os.environ[var]))
+
+env.Append(CXXFLAGS=['-fno-exceptions', '-fno-rtti'])
+
 conf = env.Configure()
 
 if conf.CheckHeader('zlib.h'):