Commit e33b6ff6 authored by Matthieu Schaller's avatar Matthieu Schaller
Browse files

Get the correct warning flags for the Intel compiler. Also add a -Werror for clang.

parent e29af86f
......@@ -440,8 +440,8 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM(
AC_MSG_RESULT($rtc_ok)
# Add warning flags by default, if these can be used. Option =error adds
# -Werror to GCC and Intel. Note do this last as compiler tests may become
# errors, if that's an issue don't use CFLAGS for these, use an AC_SUBST().
# -Werror to GCC, clang and Intel. Note do this last as compiler tests may
# become errors, if that's an issue don't use CFLAGS for these, use an AC_SUBST().
AC_ARG_ENABLE([compiler-warnings],
[AS_HELP_STRING([--enable-compiler-warnings],
[Enable compile time warning flags, if compiler is known @<:@error/no/yes)@:>@]
......@@ -449,12 +449,23 @@ AC_ARG_ENABLE([compiler-warnings],
[enable_warn="$enableval"],
[enable_warn="error"]
)
if test "$enable_warn" != "no"; then
AX_CFLAGS_WARN_ALL
# AX_CFLAGS_WARN_ALL does not give good warning flags for the Intel compiler
# We will do this by hand instead
case "$ax_cv_c_compiler_vendor" in
gnu | clang)
CFLAGS="$CFLAGS -Wall"
;;
intel )
CFLAGS="$CFLAGS -w2"
;;
esac
# Add a "choke on warning" flag if it exists
if test "$enable_warn" = "error"; then
case "$ax_cv_c_compiler_vendor" in
intel | gnu )
intel | gnu | clang)
CFLAGS="$CFLAGS -Werror"
;;
esac
......
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