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| author | Tsukasa OI <research_trasio@irq.a4lg.com> | 2022-09-10 17:08:13 +0000 |
|---|---|---|
| committer | Tsukasa OI <research_trasio@irq.a4lg.com> | 2022-09-14 05:42:17 +0000 |
| commit | 491cf3178f718e48d71a54e50475e37dd831a51d (patch) | |
| tree | 9329c5cbf3004f8c126c6a10e79c400a84e907fb /bfd | |
| parent | fdbca3611592ecfe6c421923562ed307ef75c8e0 (diff) | |
| download | gdb-491cf3178f718e48d71a54e50475e37dd831a51d.zip gdb-491cf3178f718e48d71a54e50475e37dd831a51d.tar.gz gdb-491cf3178f718e48d71a54e50475e37dd831a51d.tar.bz2 | |
bfd: Stop using -Wstack-usage=262144 when built with Clang
Some components of GNU Binutils will pass "-Wstack-usage=262144" when
"GCC >= 5.0" is detected. However, Clang does not support "-Wstack-usage",
despite that related configuration part in bfd/warning.m4 handles the latest
Clang (15.0.0 as of this writing) as "GCC >= 5.0".
The option "-Wstack-usage" was ignored when the first version of Clang is
released but even this "ignoring" behavior is removed before Clang 4.0.0.
So, if we give Clang "-Wstack-usage=262144", it generates a warning, making
the build failure.
This commit checks "__clang__" macro to prevent adding the option if the
compiler is identified as Clang.
bfd/ChangeLog:
* warning.m4: Stop appending "-Wstack-usage=262144" option when
compiled with Clang.
* configure: Regenerate.
binutils/ChangeLog:
* configure: Regenerate.
gas/ChangeLog:
* configure: Regenerate.
gold/ChangeLog:
* configure: Regenerate.
gprof/ChangeLog:
* configure: Regenerate.
ld/ChangeLog:
* configure: Regenerate.
opcodes/ChangeLog:
* configure: Regenerate.
Diffstat (limited to 'bfd')
| -rwxr-xr-x | bfd/configure | 18 | ||||
| -rw-r--r-- | bfd/warning.m4 | 6 |
2 files changed, 22 insertions, 2 deletions
diff --git a/bfd/configure b/bfd/configure index 6afdce9..075d2ee 100755 --- a/bfd/configure +++ b/bfd/configure @@ -12093,10 +12093,19 @@ if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | $EGREP "(^[0-4]$|^__GNUC__$)" >/dev/null 2>&1; then : else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +__clang__ +_ACEOF +if (eval "$ac_cpp conftest.$ac_ext") 2>&5 | + $EGREP "^__clang__$" >/dev/null 2>&1; then : GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144" fi rm -f conftest* +fi +rm -f conftest* + # Set WARN_WRITE_STRINGS if the compiler supports -Wwrite-strings. WARN_WRITE_STRINGS="" @@ -12138,10 +12147,19 @@ if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 | $EGREP "(^[0-4]$|^__GNUC__$)" >/dev/null 2>&1; then : else + cat confdefs.h - <<_ACEOF >conftest.$ac_ext +/* end confdefs.h. */ +__clang__ +_ACEOF +if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 | + $EGREP "^__clang__$" >/dev/null 2>&1; then : GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144" fi rm -f conftest* +fi +rm -f conftest* + # Check whether --enable-werror was given. if test "${enable_werror+set}" = set; then : diff --git a/bfd/warning.m4 b/bfd/warning.m4 index 6f3e190..0435c66 100644 --- a/bfd/warning.m4 +++ b/bfd/warning.m4 @@ -50,7 +50,8 @@ GCC_WARN_CFLAGS_FOR_BUILD="-W -Wall -Wstrict-prototypes -Wmissing-prototypes" AC_EGREP_CPP([(^[0-3]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow") # Add -Wstack-usage if the compiler is a sufficiently recent version of GCC. -AC_EGREP_CPP([(^[0-4]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144") +AC_EGREP_CPP([(^[0-4]$|^__GNUC__$)],[__GNUC__],,dnl +[AC_EGREP_CPP([^__clang__$],[__clang__],[GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144"],)]) # Set WARN_WRITE_STRINGS if the compiler supports -Wwrite-strings. WARN_WRITE_STRINGS="" @@ -62,7 +63,8 @@ AC_EGREP_CPP([(^[0-3]$|^__GNUC__$)],[__GNUC__],,WARN_WRITE_STRINGS="-Wwrite-stri AC_EGREP_CPP_FOR_BUILD([(^[0-3]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wshadow") # Add -Wstack-usage if the compiler is a sufficiently recent version of GCC. -AC_EGREP_CPP_FOR_BUILD([(^[0-4]$|^__GNUC__$)],[__GNUC__],,GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144") +AC_EGREP_CPP_FOR_BUILD([(^[0-4]$|^__GNUC__$)],[__GNUC__],,dnl +[AC_EGREP_CPP_FOR_BUILD([^__clang__$],[__clang__],[GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144"],)]) AC_ARG_ENABLE(werror, [ --enable-werror treat compile warnings as errors], |