Write pdb info to a specific file.

mesonbuild/backend/ninjabackend.py

@@ -1521,6 +1521,7 @@ rule FORTRAN_DEP_HACK
             commands+= compiler.get_include_args(i, False)
         if self.environment.coredata.base_options.get('b_pch', False):
             commands += self.get_pch_include_args(compiler, target)
+        commands += compiler.get_compile_debugfile_args(rel_obj)
         crstr = ''
         if target.is_cross:
             crstr = '_CROSS'

mesonbuild/compilers.py

@@ -352,6 +352,11 @@ class Compiler():
     def get_colorout_args(self, colortype):
         return []
 
+    # Some compilers (msvc) write debug info to a separate file.
+    # These args specify where it should be written.
+    def get_compile_debugfile_args(self, rel_obj):
+        return []
+
 class CCompiler(Compiler):
     def __init__(self, exelist, version, is_cross, exe_wrapper=None):
         super().__init__(exelist, version)
@@ -1599,6 +1604,10 @@ class VisualStudioCCompiler(CCompiler):
             raise MesonException('Compiling test app failed.')
         return not(warning_text in stde or warning_text in stdo)
 
+    def get_compile_debugfile_args(self, rel_obj):
+        pdbarr = rel_obj.split('.')[:-1] + ['pdb']
+        return ['/Fd' + '.'.join(pdbarr)]
+
 class VisualStudioCPPCompiler(VisualStudioCCompiler):
     def __init__(self, exelist, version, is_cross, exe_wrap):
         VisualStudioCCompiler.__init__(self, exelist, version, is_cross, exe_wrap)