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HP C isn't the only compiler on which we must avoid GCC-style -W flags.

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MIPS C and DEC C also can't be made to reliably Just Say No to those
flags, and they don't support those flags, so don't try them with those
compilers either.
This commit is contained in:
Guy Harris 2013-05-12 12:30:01 -07:00
parent 0b80d76bdd
commit 60f8354159
2 changed files with 44 additions and 8 deletions
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26
aclocal.m4 vendored
View File

@ -173,13 +173,24 @@ AC_DEFUN(AC_LBL_C_INIT,
hpux*)
#
# Note that this is HP C, because we have to
# treat it specially below.
# HP C, which is what we presume we're using, doesn't
# exit with a non-zero exit status if we hand it an
# invalid -W flag, can't be forced to do so even with
# +We, and doesn't handle GCC-style -W flags, so we
# don't want to try using GCC-style -W flags.
#
ac_lbl_cc_is_hp_c=yes
ac_lbl_cc_dont_try_gcc_dashW=yes
;;
irix*)
#
# MIPS C, which is what we presume we're using, doesn't
# necessarily exit with a non-zero exit status if we
# hand it an invalid -W flag, can't be forced to do
# so, and doesn't handle GCC-style -W flags, so we
# don't want to try using GCC-style -W flags.
#
ac_lbl_cc_dont_try_gcc_dashW=yes
$1="$$1 -xansi -signed -O"
;;
@ -188,6 +199,13 @@ AC_DEFUN(AC_LBL_C_INIT,
# Presumed to be DEC OSF/1, Digital UNIX, or
# Tru64 UNIX.
#
# The DEC C compiler, which is what we presume we're
# using, doesn't exit with a non-zero exit status if we
# hand it an invalid -W flag, can't be forced to do
# so, and doesn't handle GCC-style -W flags, so we
# don't want to try using GCC-style -W flags.
#
ac_lbl_cc_dont_try_gcc_dashW=yes
$1="$$1 -O"
;;
@ -998,7 +1016,7 @@ AC_DEFUN(AC_LBL_DEVEL,
# We therefore skip all the warning option stuff
# on HP-UX.
#
if test "$ac_lbl_cc_is_hp_c" != yes; then
if test "$ac_lbl_cc_dont_try_gcc_dashW" != yes; then
AC_LBL_CHECK_UNKNOWN_WARNING_OPTION_ERROR()
AC_LBL_CHECK_COMPILER_OPT($1, -Wall)
AC_LBL_CHECK_COMPILER_OPT($1, -Wmissing-prototypes)

26
configure vendored
View File

@ -3049,13 +3049,24 @@ echo "$as_me: error: see the INSTALL doc for more info" >&2;}
hpux*)
#
# Note that this is HP C, because we have to
# treat it specially below.
# HP C, which is what we presume we're using, doesn't
# exit with a non-zero exit status if we hand it an
# invalid -W flag, can't be forced to do so even with
# +We, and doesn't handle GCC-style -W flags, so we
# don't want to try using GCC-style -W flags.
#
ac_lbl_cc_is_hp_c=yes
ac_lbl_cc_dont_try_gcc_dashW=yes
;;
irix*)
#
# MIPS C, which is what we presume we're using, doesn't
# necessarily exit with a non-zero exit status if we
# hand it an invalid -W flag, can't be forced to do
# so, and doesn't handle GCC-style -W flags, so we
# don't want to try using GCC-style -W flags.
#
ac_lbl_cc_dont_try_gcc_dashW=yes
V_CCOPT="$V_CCOPT -xansi -signed -O"
;;
@ -3064,6 +3075,13 @@ echo "$as_me: error: see the INSTALL doc for more info" >&2;}
# Presumed to be DEC OSF/1, Digital UNIX, or
# Tru64 UNIX.
#
# The DEC C compiler, which is what we presume we're
# using, doesn't exit with a non-zero exit status if we
# hand it an invalid -W flag, can't be forced to do
# so, and doesn't handle GCC-style -W flags, so we
# don't want to try using GCC-style -W flags.
#
ac_lbl_cc_dont_try_gcc_dashW=yes
V_CCOPT="$V_CCOPT -O"
;;
@ -11307,7 +11325,7 @@ rm -f os-proto.h
# We therefore skip all the warning option stuff
# on HP-UX.
#
if test "$ac_lbl_cc_is_hp_c" != yes; then
if test "$ac_lbl_cc_dont_try_gcc_dashW" != yes; then
{ echo "$as_me:$LINENO: checking whether the compiler fails when given an unknown warning option" >&5
echo $ECHO_N "checking whether the compiler fails when given an unknown warning option... $ECHO_C" >&6; }