Gcc versions older than 4.9 do not support color output.

mesonbuild/backend/backends.py

@@ -83,8 +83,9 @@ class Backend():
                 return i
         raise RuntimeError('No compiler for language ' + lang)
 
-    def get_compiler_for_source(self, src):
-        for i in self.build.compilers:
+    def get_compiler_for_source(self, src, is_cross):
+        comp = self.build.cross_compilers if is_cross else self.build.compilers
+        for i in comp:
             if i.can_compile(src):
                 return i
         if isinstance(src, mesonlib.File):
@@ -133,7 +134,7 @@ class Backend():
         abs_files = []
         result = []
         for src in unity_src:
-            comp = self.get_compiler_for_source(src)
+            comp = self.get_compiler_for_source(src, target.is_cross)
             language = comp.get_language()
             suffix = '.' + comp.get_default_suffix()
             if language not in langlist:

mesonbuild/backend/ninjabackend.py

@@ -665,7 +665,7 @@ int dummy;
         outname_rel = os.path.join(self.get_target_dir(target), fname)
         src_list = target.get_sources()
         class_list = []
-        compiler = self.get_compiler_for_source(src_list[0])
+        compiler = self.get_compiler_for_source(src_list[0], False)
         assert(compiler.get_language() == 'java')
         c = 'c'
         m = ''
@@ -716,7 +716,7 @@ int dummy;
         fname = target.get_filename()
         outname_rel = os.path.join(self.get_target_dir(target), fname)
         src_list = target.get_sources()
-        compiler = self.get_compiler_for_source(src_list[0])
+        compiler = self.get_compiler_for_source(src_list[0], False)
         assert(compiler.get_language() == 'cs')
         rel_srcs = [s.rel_to_builddir(self.build_to_src) for s in src_list]
         deps = []
@@ -1424,7 +1424,7 @@ rule FORTRAN_DEP_HACK
         if isinstance(src, RawFilename) and src.fname.endswith('.h'):
             raise RuntimeError('Fug')
         extra_orderdeps = []
-        compiler = self.get_compiler_for_source(src)
+        compiler = self.get_compiler_for_source(src, target.is_cross)
         commands = []
         # The first thing is implicit include directories: source, build and private.
         commands += compiler.get_include_args(self.get_target_private_dir(target), False)

mesonbuild/compilers.py

@@ -1644,7 +1644,9 @@ class GnuCCompiler(CCompiler):
             self.base_options.append('b_lundef')
 
     def get_colorout_args(self, colortype):
-        return gnu_color_args[colortype][:]
+        if mesonlib.version_compare(self.version, '>=4.9.0'):
+            return gnu_color_args[colortype][:]
+        return []
 
     def get_pic_args(self):
         if self.gcc_type == GCC_MINGW:
@@ -1831,7 +1833,9 @@ class GnuCPPCompiler(CPPCompiler):
             self.base_options.append('b_lundef')
 
     def get_colorout_args(self, colortype):
-        return gnu_color_args[colortype][:]
+        if mesonlib.version_compare(self.version, '>=4.9.0'):
+            return gnu_color_args[colortype][:]
+        return []
 
     def get_always_args(self):
         return ['-pipe']