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61 lines
1.7 KiB
Plaintext
61 lines
1.7 KiB
Plaintext
dnl Common configure.in fragment
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AC_DEFUN([AM_BINUTILS_WARNINGS],[
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GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
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AC_EGREP_CPP([^[0-3]$],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow")
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AC_ARG_ENABLE(werror,
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[ --enable-werror treat compile warnings as errors],
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[case "${enableval}" in
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yes | y) ERROR_ON_WARNING="yes" ;;
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no | n) ERROR_ON_WARNING="no" ;;
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*) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
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esac])
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# Disable -Wformat by default when using gcc on mingw
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case "${host}" in
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*-*-mingw32*)
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if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
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GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wno-format"
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fi
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;;
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*) ;;
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esac
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# Enable -Werror by default when using gcc
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if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
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ERROR_ON_WARNING=yes
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fi
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NO_WERROR=
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if test "${ERROR_ON_WARNING}" = yes ; then
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GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror"
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NO_WERROR="-Wno-error"
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fi
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if test "${GCC}" = yes ; then
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WARN_CFLAGS="${GCC_WARN_CFLAGS}"
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fi
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AC_ARG_ENABLE(build-warnings,
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[ --enable-build-warnings enable build-time compiler warnings],
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[case "${enableval}" in
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yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}";;
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no) if test "${GCC}" = yes ; then
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WARN_CFLAGS="-w"
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fi;;
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,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
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WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;
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*,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
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WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;
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*) WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
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esac])
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if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then
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echo "Setting warning flags = $WARN_CFLAGS" 6>&1
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fi
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AC_SUBST(WARN_CFLAGS)
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AC_SUBST(NO_WERROR)
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])
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