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authorVlad Zakharov <vzakhar@synopsys.com>2016-09-26 16:36:08 +0100
committerNick Clifton <nickc@redhat.com>2016-09-26 16:36:08 +0100
commitc5da193232ea0452f714dffee0d417d965590476 (patch)
treec2867b21c7ceff96ce501c83c1e99025a55d5ba3 /gold/configure
parent384f7503344b1d07561f801ced7493858cde6164 (diff)
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When building target binaries, ensure that the warning flags selected for the command line match the target compiler.
bfd * warning.m4 (AC_EGREP_CPP_FOR_BUILD): Introduce macro to verify CC_FOR_BUILD compiler. (AM_BINUTILS_WARNINGS): Introduce ac_cpp_for_build variable and add CC_FOR_BUILD compiler checks. * Makefile.in: Regenerate. * configure: Likewise. * doc/Makefile.in: Likewise. binutils * Makefile.am: Replace AM_CLFAGS with AM_CFLAGS_FOR_BUILD when building with CC_FOR_BUILD compiler. * Makefile.in: Regenerate. * configure: Likewise. * doc/Makefile.in: Likewise. gas * Makefile.in: Regenerate. * configure: Likewise. * doc/Makefile.in: Likewise. gold * Makefile.in: Regenerate. * configure: Likewise. * testsuite/Makefile.in: Likewise. gprof * Makefile.in: Regenerate. * configure: Likewise. ld * Makefile.in: Regenerate. * configure: Likewise. opcodes * Makefile.in: Regenerate. * configure: Likewise.
Diffstat (limited to 'gold/configure')
-rwxr-xr-xgold/configure52
1 files changed, 48 insertions, 4 deletions
diff --git a/gold/configure b/gold/configure
index 8240c28..343a407 100755
--- a/gold/configure
+++ b/gold/configure
@@ -609,6 +609,7 @@ GOLD_LDFLAGS
WARN_CXXFLAGS
WARN_WRITE_STRINGS
NO_WERROR
+WARN_CFLAGS_FOR_BUILD
WARN_CFLAGS
IFUNC_STATIC_FALSE
IFUNC_STATIC_TRUE
@@ -6723,8 +6724,12 @@ fi
# Set the 'development' global.
. $srcdir/../bfd/development.sh
+# Set acp_cpp_for_build variable
+ac_cpp_for_build="$CC_FOR_BUILD -E $CPPFLAGS_FOR_BUILD"
+
# Default set of GCC warnings to enable.
GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+GCC_WARN_CFLAGS_FOR_BUILD="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
# Add -Wshadow if the compiler is a sufficiently recent version of GCC.
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -6769,6 +6774,36 @@ fi
rm -f conftest*
+# Verify CC_FOR_BUILD to be compatible with waring flags
+
+# Add -Wshadow if the compiler is a sufficiently recent version of GCC.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+__GNUC__
+_ACEOF
+if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 |
+ $EGREP "^[0-3]$" >/dev/null 2>&1; then :
+
+else
+ GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wshadow"
+fi
+rm -f conftest*
+
+
+# Add -Wstack-usage if the compiler is a sufficiently recent version of GCC.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+__GNUC__
+_ACEOF
+if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 |
+ $EGREP "^[0-4]$" >/dev/null 2>&1; then :
+
+else
+ GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144"
+fi
+rm -f conftest*
+
+
# Check whether --enable-werror was given.
if test "${enable_werror+set}" = set; then :
enableval=$enable_werror; case "${enableval}" in
@@ -6784,6 +6819,7 @@ case "${host}" in
*-*-mingw32*)
if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wno-format"
+ GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wno-format"
fi
;;
*) ;;
@@ -6797,25 +6833,32 @@ fi
NO_WERROR=
if test "${ERROR_ON_WARNING}" = yes ; then
GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror"
+ GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Werror"
NO_WERROR="-Wno-error"
fi
if test "${GCC}" = yes ; then
WARN_CFLAGS="${GCC_WARN_CFLAGS}"
+ WARN_CFLAGS_FOR_BUILD="${GCC_WARN_CFLAGS_FOR_BUILD}"
fi
# Check whether --enable-build-warnings was given.
if test "${enable_build_warnings+set}" = set; then :
enableval=$enable_build_warnings; case "${enableval}" in
- yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}";;
+ yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}"
+ WARN_CFLAGS_FOR_BUILD="${GCC_WARN_CFLAGS_FOR_BUILD}";;
no) if test "${GCC}" = yes ; then
WARN_CFLAGS="-w"
+ WARN_CFLAGS_FOR_BUILD="-w"
fi;;
,*) t=`echo "${enableval}" | sed -e "s/,/ /g"`
- WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;
+ WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}"
+ WARN_CFLAGS_FOR_BUILD="${GCC_WARN_CFLAGS_FOR_BUILD} ${t}";;
*,) t=`echo "${enableval}" | sed -e "s/,/ /g"`
- WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;
- *) WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+ WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}"
+ WARN_CFLAGS_FOR_BUILD="${t} ${GCC_WARN_CFLAGS_FOR_BUILD}";;
+ *) WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`
+ WARN_CFLAGS_FOR_BUILD=`echo "${enableval}" | sed -e "s/,/ /g"`;;
esac
fi
@@ -6829,6 +6872,7 @@ fi
+
WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`