mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
047fa8cc1c
The op struct includes an array of strings, but doesn't use braces around that array when initializing. This causes a ton of warnings when using -Wmissing-braces. Add them to fix. The code this tool generates is the same before & after.
213 lines
7.0 KiB
Plaintext
213 lines
7.0 KiB
Plaintext
dnl Copyright (C) 1997-2024 Free Software Foundation, Inc.
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dnl
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dnl This program is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl This program is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
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dnl
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dnl --enable-build-warnings is for developers of the simulator.
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dnl it enables extra GCC specific warnings.
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AC_DEFUN([SIM_AC_OPTION_WARNINGS], [dnl
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AC_ARG_ENABLE(werror,
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AS_HELP_STRING([--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 ${enableval} for --enable-werror) ;;
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esac])
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dnl Enable -Werror by default when using gcc. Turn it off for releases.
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if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" && $development; then
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ERROR_ON_WARNING=yes
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fi
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WERROR_CFLAGS=""
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if test "${ERROR_ON_WARNING}" = yes ; then
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WERROR_CFLAGS="-Werror"
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fi
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dnl The options we'll try to enable.
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dnl NB: Kept somewhat in sync with gdbsupport/warnings.m4.
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build_warnings="-Wall -Wpointer-arith
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-Wno-unused -Wunused-value -Wunused-variable -Wunused-function
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-Wno-switch -Wno-char-subscripts
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-Wempty-body -Wunused-but-set-parameter -Wunused-but-set-variable
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-Wno-sign-compare -Wno-error=maybe-uninitialized
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dnl C++ -Wno-mismatched-tags
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-Wno-error=deprecated-register
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dnl C++ -Wsuggest-override
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-Wimplicit-fallthrough=5
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-Wduplicated-cond
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-Wshadow=local
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dnl C++ -Wdeprecated-copy
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dnl C++ -Wdeprecated-copy-dtor
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dnl C++ -Wredundant-move
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-Wmissing-declarations
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dnl C++ -Wstrict-null-sentinel
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"
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dnl Some extra warnings we use in the sim.
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build_warnings="$build_warnings
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-Wdeclaration-after-statement
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-Wdeprecated-non-prototype
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-Wimplicit-function-declaration
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-Wimplicit-int
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-Wincompatible-function-pointer-types
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-Wincompatible-pointer-types
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-Wint-conversion
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-Wmisleading-indentation
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-Wmissing-parameter-type
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-Wmissing-prototypes
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-Wold-style-declaration
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-Wold-style-definition
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-Wpointer-sign
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-Wreturn-mismatch
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-Wreturn-type
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-Wshift-negative-value
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-Wstrict-prototypes
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dnl The cgen virtual insn logic involves enum conversions.
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dnl Disable until we can figure out how to make this work.
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-Wno-enum-conversion
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"
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build_build_warnings="
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dnl TODO Figure out the igen code that triggers warnings w/FORTIFY_SOURCE.
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-Wno-stringop-truncation
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dnl Fixing this requires ATTRIBUTE_FALLTHROUGH support at build time, but we
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dnl don't have gnulib there (yet).
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-Wno-implicit-fallthrough
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dnl TODO Enable this after cleaning up code.
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-Wno-shadow=local
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"
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case "${host}" in
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*-*-mingw32*)
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# Enable -Wno-format by default when using gcc on mingw since many
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# GCC versions complain about %I64.
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build_warnings="$build_warnings -Wno-format" ;;
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*-*-solaris*)
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# Solaris 11.4 <python2.7/ceval.h> uses #pragma no_inline that GCC
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# doesn't understand.
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build_warnings="$build_warnings -Wno-unknown-pragmas"
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# Solaris 11 <unistd.h> marks vfork deprecated.
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build_warnings="$build_warnings -Wno-deprecated-declarations" ;;
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*)
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# Note that gcc requires -Wformat for -Wformat-nonliteral to work,
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# but there's a special case for this below.
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build_warnings="$build_warnings -Wformat-nonliteral" ;;
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esac
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AC_ARG_ENABLE(build-warnings,
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AS_HELP_STRING([--enable-build-warnings], [enable build-time compiler warnings if gcc is used]),
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[case "${enableval}" in
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yes) ;;
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no) build_warnings="-w";;
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,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
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build_warnings="${build_warnings} ${t}";;
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*,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
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build_warnings="${t} ${build_warnings}";;
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*) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
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esac
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if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
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echo "Setting compiler warning flags = $build_warnings" 6>&1
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fi])dnl
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AC_ARG_ENABLE(sim-build-warnings,
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AS_HELP_STRING([--enable-sim-build-warnings], [enable SIM specific build-time compiler warnings if gcc is used]),
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[case "${enableval}" in
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yes) ;;
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no) build_warnings="-w";;
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,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
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build_warnings="${build_warnings} ${t}";;
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*,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
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build_warnings="${t} ${build_warnings}";;
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*) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
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esac
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if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
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echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
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fi])dnl
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WARN_CFLAGS=""
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BUILD_WARN_CFLAGS=""
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if test "x${build_warnings}" != x -a "x$GCC" = xyes
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then
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AC_DEFUN([_SIM_TEST_ALL_WARNING_FLAGS], [dnl
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AC_MSG_CHECKING(compiler warning flags)
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# Separate out the -Werror flag as some files just cannot be
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# compiled with it enabled.
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for w in ${build_warnings}; do
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case $w in
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-Werr*) WERROR_CFLAGS=-Werror ;;
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*) _SIM_TEST_WARNING_FLAG($w, [WARN_CFLAGS="${WARN_CFLAGS} $w"]) ;;
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esac
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done
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AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
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])
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dnl Test the host flags.
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_SIM_TEST_ALL_WARNING_FLAGS
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dnl Test the build flags.
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AS_IF([test "x$cross_compiling" = "xno"], [dnl
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SAVE_WARN_CFLAGS=$WARN_CFLAGS
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build_warnings=$build_build_warnings
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_SIM_TEST_ALL_WARNING_FLAGS
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BUILD_WARN_CFLAGS=$WARN_CFLAGS
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WARN_CFLAGS=$SAVE_WARN_CFLAGS
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BUILD_WERROR_CFLAGS=$WERROR_CFLAGS
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])
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dnl Test individual flags to export to dedicated variables.
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m4_map([_SIM_EXPORT_WARNING_FLAG], m4_split(m4_normalize([
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-Wno-shadow=local
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-Wno-unused-but-set-variable
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])))dnl
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fi
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])
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dnl Test a warning flag $1 and execute $2 if it passes, else $3.
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AC_DEFUN([_SIM_TEST_WARNING_FLAG], [dnl
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dnl GCC does not complain about -Wno-unknown-warning. Invert
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dnl and test -Wunknown-warning instead.
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w="$1"
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case $w in
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-Wno-*)
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wtest=`echo $w | sed 's/-Wno-/-W/g'` ;;
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-Wformat-nonliteral)
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dnl gcc requires -Wformat before -Wformat-nonliteral
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dnl will work, so stick them together.
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w="-Wformat $w"
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wtest="$w"
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;;
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*)
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wtest=$w ;;
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esac
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dnl Check whether GCC accepts it.
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saved_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror $wtest"
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AC_TRY_COMPILE([],[],$2,$3)
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CFLAGS="$saved_CFLAGS"
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])
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dnl Export variable $1 to $2 for use in makefiles.
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AC_DEFUN([_SIM_EXPORT_WARNING], [dnl
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AS_VAR_SET($1, $2)
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AC_SUBST($1)
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])
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dnl Test if $1 is a known warning flag, and export a variable for makefiles.
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dnl If $1=-Wfoo, then SIM_CFLAG_WFOO will be set to -Wfoo if it's supported.
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AC_DEFUN([_SIM_EXPORT_WARNING_FLAG], [dnl
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AC_MSG_CHECKING([whether $1 is supported])
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_SIM_TEST_WARNING_FLAG($1, [dnl
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_SIM_EXPORT_WARNING([SIM_CFLAG]m4_toupper(m4_translit($1, [-= ], [__])), $1)
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AC_MSG_RESULT(yes)
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], [AC_MSG_RESULT(no)])
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])
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AC_SUBST(WARN_CFLAGS)
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AC_SUBST(WERROR_CFLAGS)
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AC_SUBST(BUILD_WARN_CFLAGS)
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AC_SUBST(BUILD_WERROR_CFLAGS)
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