diff --git a/src/c4/cmany/args.py b/src/c4/cmany/args.py
index 4149140..c75d087 100644
--- a/src/c4/cmany/args.py
+++ b/src/c4/cmany/args.py
@@ -403,6 +403,8 @@ def add_cflags(parser):
                    Multiple invokations of -D are possible, in which case
                    arguments will be appended and not overwritten.
                    To escape commas, use a backslash \\.""")
+    g.add_argument("-K", "--kflags", default=[], action=FlagArgument,
+                   help="""Add C and C++ compiler flags. See -C and -X.""")
     g.add_argument("-X", "--cxxflags", default=[], action=FlagArgument,
                    help="""Add C++ compiler flags.
                    Accepts a comma-separated list of C++ compiler flags.
diff --git a/src/c4/cmany/build_flags.py b/src/c4/cmany/build_flags.py
index 5ba152c..3032260 100644
--- a/src/c4/cmany/build_flags.py
+++ b/src/c4/cmany/build_flags.py
@@ -17,6 +17,10 @@ def __init__(self, name, **kwargs):
         self.cflags = kwargs.get('cflags', [])
         self.cxxflags = kwargs.get('cxxflags', [])
         self.toolchain = kwargs.get('toolchain')
+        kflags = kwargs.get('kflags')
+        if kflags is not None:
+            self.cflags += kflags
+            self.cxxflags += kflags
         # self.include_dirs = kwargs['include_dirs']
         # self.link_dirs = kwargs['link_dirs']