Fix the read/write flag for these registers on AArch64
[deliverable/binutils-gdb.git] / gdb / warning.m4
CommitLineData
b835bb52 1dnl Autoconf configure script for GDB, the GNU debugger.
e2882c85 2dnl Copyright (C) 1995-2018 Free Software Foundation, Inc.
b835bb52
MF
3dnl
4dnl This file is part of GDB.
5dnl
6dnl This program is free software; you can redistribute it and/or modify
7dnl it under the terms of the GNU General Public License as published by
8dnl the Free Software Foundation; either version 3 of the License, or
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10dnl
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12dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
13dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14dnl GNU General Public License for more details.
15dnl
16dnl You should have received a copy of the GNU General Public License
17dnl along with this program. If not, see <http://www.gnu.org/licenses/>.
18
19AC_DEFUN([AM_GDB_WARNINGS],[
20AC_ARG_ENABLE(werror,
21 AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]),
22 [case "${enableval}" in
23 yes | y) ERROR_ON_WARNING="yes" ;;
24 no | n) ERROR_ON_WARNING="no" ;;
25 *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
26 esac])
27
28# Enable -Werror by default when using gcc. Turn it off for releases.
29if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" && $development; then
30 ERROR_ON_WARNING=yes
31fi
32
33WERROR_CFLAGS=""
34if test "${ERROR_ON_WARNING}" = yes ; then
35 WERROR_CFLAGS="-Werror"
36fi
37
cf6de44d 38# The options we'll try to enable.
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39build_warnings="-Wall -Wpointer-arith \
40-Wno-unused -Wunused-value -Wunused-function \
41-Wno-switch -Wno-char-subscripts \
cf6de44d 42-Wempty-body -Wunused-but-set-parameter -Wunused-but-set-variable \
8465943a 43-Wno-sign-compare -Wno-narrowing -Wno-error=maybe-uninitialized \
7f8a5d38 44-Wno-mismatched-tags \
632e107b 45-Wno-error=deprecated-register \
85e26832 46-Wsuggest-override \
1a34f210 47-Wimplicit-fallthrough=3 \
aff689d3 48-Wduplicated-cond"
b835bb52 49
b835bb52 50case "${host}" in
4fa7574e
RO
51 *-*-mingw32*)
52 # Enable -Wno-format by default when using gcc on mingw since many
53 # GCC versions complain about %I64.
54 build_warnings="$build_warnings -Wno-format" ;;
55 *-*-solaris*)
56 # Solaris 11.4 <python2.7/ceval.h> uses #pragma no_inline that GCC
57 # doesn't understand.
58 build_warnings="$build_warnings -Wno-unknown-pragmas"
59 # Solaris 11 <unistd.h> marks vfork deprecated.
60 build_warnings="$build_warnings -Wno-deprecated-declarations" ;;
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61 *) build_warnings="$build_warnings -Wformat-nonliteral" ;;
62esac
63
64AC_ARG_ENABLE(build-warnings,
65AS_HELP_STRING([--enable-build-warnings], [enable build-time compiler warnings if gcc is used]),
66[case "${enableval}" in
67 yes) ;;
68 no) build_warnings="-w";;
69 ,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
70 build_warnings="${build_warnings} ${t}";;
71 *,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
72 build_warnings="${t} ${build_warnings}";;
73 *) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
74esac
75if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
76 echo "Setting compiler warning flags = $build_warnings" 6>&1
77fi])dnl
78AC_ARG_ENABLE(gdb-build-warnings,
79AS_HELP_STRING([--enable-gdb-build-warnings], [enable GDB specific build-time compiler warnings if gcc is used]),
80[case "${enableval}" in
81 yes) ;;
82 no) build_warnings="-w";;
83 ,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
84 build_warnings="${build_warnings} ${t}";;
85 *,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
86 build_warnings="${t} ${build_warnings}";;
87 *) build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
88esac
89if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
90 echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
91fi])dnl
92
93# The set of warnings supported by a C++ compiler is not the same as
94# of the C compiler.
cf6de44d 95AC_LANG_PUSH([C++])
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96
97WARN_CFLAGS=""
98if test "x${build_warnings}" != x -a "x$GCC" = xyes
99then
100 AC_MSG_CHECKING(compiler warning flags)
101 # Separate out the -Werror flag as some files just cannot be
102 # compiled with it enabled.
103 for w in ${build_warnings}; do
104 # GCC does not complain about -Wno-unknown-warning. Invert
105 # and test -Wunknown-warning instead.
106 case $w in
107 -Wno-*)
108 wtest=`echo $w | sed 's/-Wno-/-W/g'` ;;
109 *)
110 wtest=$w ;;
111 esac
112
113 case $w in
114 -Werr*) WERROR_CFLAGS=-Werror ;;
115 *)
116 # Check whether GCC accepts it.
117 saved_CFLAGS="$CFLAGS"
3e019bdc 118 CFLAGS="$CFLAGS -Werror $wtest"
b835bb52 119 saved_CXXFLAGS="$CXXFLAGS"
3e019bdc 120 CXXFLAGS="$CXXFLAGS -Werror $wtest"
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121 AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",)
122 CFLAGS="$saved_CFLAGS"
123 CXXFLAGS="$saved_CXXFLAGS"
124 esac
125 done
126 AC_MSG_RESULT(${WARN_CFLAGS} ${WERROR_CFLAGS})
127fi
128AC_SUBST(WARN_CFLAGS)
129AC_SUBST(WERROR_CFLAGS)
130
cf6de44d 131AC_LANG_POP([C++])
b835bb52 132])
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