diff options
Diffstat (limited to 'gdb/gdbserver/configure.ac')
| -rw-r--r-- | gdb/gdbserver/configure.ac | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac index 958a158..24ef9a8 100644 --- a/gdb/gdbserver/configure.ac +++ b/gdb/gdbserver/configure.ac @@ -93,6 +93,48 @@ fi AC_SUBST(ustlibs) AC_SUBST(ustinc) +AC_ARG_ENABLE(werror, + AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]), + [case "${enableval}" in + yes | y) ERROR_ON_WARNING="yes" ;; + no | n) ERROR_ON_WARNING="no" ;; + *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;; + esac]) + +# Enable -Werror by default when using gcc +if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then + ERROR_ON_WARNING=yes +fi + +WERROR_CFLAGS="" +if test "${ERROR_ON_WARNING}" = yes ; then + WERROR_CFLAGS="-Werror" +fi + +build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \ +-Wformat-nonliteral " + +WARN_CFLAGS="" +if test "x$GCC" = xyes +then + AC_MSG_CHECKING(compiler warning flags) + # Separate out the -Werror flag as some files just cannot be + # compiled with it enabled. + for w in ${build_warnings}; do + case $w in + -Werr*) WERROR_CFLAGS=-Werror ;; + *) # Check that GCC accepts it + saved_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $w" + AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",) + CFLAGS="$saved_CFLAGS" + esac + done + AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS}) +fi +AC_SUBST(WARN_CFLAGS) +AC_SUBST(WERROR_CFLAGS) + dnl dladdr is glibc-specific. It is used by thread-db.c but only for dnl debugging messages. It lives in -ldl which is handled below so we don't dnl use AC_CHECK_LIB (or AC_SEARCH_LIBS) here. Instead we just temporarily |