Turn some compiler warnings into errors
Re-apply the reverted commit 98bc7fa50d0731864297f8fb82932d480c426ff6, this
time with a clear error message in case autoconf-archive is not installed.
Change-Id: I631bde22e79ec0318eb9c8114db5861a1d635816
Tweaked-by: Neels Hofmeyr <nhofmeyr@sysmocom.de>
diff --git a/openbsc/configure.ac b/openbsc/configure.ac
index 0753834..7e244bc 100644
--- a/openbsc/configure.ac
+++ b/openbsc/configure.ac
@@ -25,6 +25,11 @@
fi
PKG_PROG_PKG_CONFIG([0.20])
+dnl check for AX_CHECK_COMPILE_FLAG
+m4_ifdef([AX_CHECK_COMPILE_FLAG], [], [
+ AC_MSG_ERROR([Please install autoconf-archive; re-run 'autoreconf -fi' for it to take effect.])
+ ])
+
dnl checks for libraries
AC_SEARCH_LIBS([dlopen], [dl dld], [LIBRARY_DL="$LIBS";LIBS=""])
AC_SUBST(LIBRARY_DL)
@@ -140,6 +145,13 @@
CFLAGS="$saved_CFLAGS"
AC_SUBST(SYMBOL_VISIBILITY)
+AX_CHECK_COMPILE_FLAG([-Werror=implicit], [CFLAGS="$CFLAGS -Werror=implicit"])
+AX_CHECK_COMPILE_FLAG([-Werror=maybe-uninitialized], [CFLAGS="$CFLAGS -Werror=maybe-uninitialized"])
+AX_CHECK_COMPILE_FLAG([-Werror=memset-transposed-args], [CFLAGS="$CFLAGS -Werror=memset-transposed-args"])
+AX_CHECK_COMPILE_FLAG([-Werror=null-dereference], [CFLAGS="$CFLAGS -Werror=null-dereference"])
+AX_CHECK_COMPILE_FLAG([-Werror=sizeof-array-argument], [CFLAGS="$CFLAGS -Werror=sizeof-array-argument"])
+AX_CHECK_COMPILE_FLAG([-Werror=sizeof-pointer-memaccess], [CFLAGS="$CFLAGS -Werror=sizeof-pointer-memaccess"])
+
# Coverage build taken from WebKit's configure.in
AC_MSG_CHECKING([whether to enable code coverage support])
AC_ARG_ENABLE(coverage,