Fix: Do not accept unknown flags with clang

e55f42c5 · Marvin Scholz · 2a21bb8b · e55f42c5
Commit e55f42c5 authored Jul 11, 2018 by Marvin Scholz
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configure.ac configure.ac +3 -0

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--- a/configure.ac
+++ b/configure.ac
@@ -22,6 +22,9 @@ AS_IF([test "${ac_cv_prog_cc_c99}" = "no"], [

 AX_APPEND_COMPILE_FLAGS([-Wall -Wextra -Wno-unused-parameter])

+dnl With clang, we want an error for unknown flags instead of just warn
+AX_APPEND_COMPILE_FLAGS([-Werror=unknown-warning-option -Werror=invalid-command-line-argument])
+
 AC_SYS_LARGEFILE
 AC_DEFINE([_GNU_SOURCE], 1, [Define to include GNU extensions to POSIX])