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• improve description why we use -fno-tree-vrp; this is thanks 

to http://blog.fefe.de/?ts=bb2654d4 by the way
• simplify a.out / a.exe distinguishation
This commit is contained in:
tg 2007-03-10 19:19:12 +00:00
parent 219bc99362
commit b08848c7ff
1 changed files with 14 additions and 13 deletions
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27
Build.sh
View File

@ -1,5 +1,5 @@
#!/bin/sh
# $MirOS: src/bin/mksh/Build.sh,v 1.165 2007/03/10 18:51:59 tg Exp $
# $MirOS: src/bin/mksh/Build.sh,v 1.166 2007/03/10 19:19:12 tg Exp $
#-
# Environment used: CC CFLAGS CPP CPPFLAGS LDFLAGS LIBS NOWARN NROFF TARGET_OS
# CPPFLAGS recognised: MKSH_SMALL MKSH_ASSUME_UTF8 MKSH_NEED_MKNOD MKSH_NOPWNAM
@ -37,7 +37,8 @@ alln=0123456789
alls=______________________________________________________________
nl='
'
tcbo=0
tcbo=
tcfn=no
upper()
{
@ -83,15 +84,17 @@ ac_testn()
cat >scn.c
eval 'v "$CC $CFLAGS $CPPFLAGS $LDFLAGS $NOWARN -I'\''$srcdir'\' \
'scn.c $LIBS" 2>&'$h | sed 's/^/] /'
test x"$tcfn" = x"no" && test -f a.out && tcfn=a.out
test x"$tcfn" = x"no" && test -f a.exe && tcfn=a.exe
test x"$tcbo" = x"1" && return
if test -f a.out || test -f a.exe; then
if test -f $tcfn; then
eval HAVE_$fu=1
$e "$bi==> $fd...$ao ${ui}yes$ao"
else
eval HAVE_$fu=0
$e "$bi==> $fd...$ao ${ui}no$ao"
fi
rm -f scn.c a.out a.exe
rm -f scn.c $tcfn
}
ac_test()
@ -251,7 +254,7 @@ CPPFLAGS="$CPPFLAGS -I'$curdir'"
#
# Begin of mirtoconf checks
#
rm -f scn.c a.out a.exe x
rm -f scn.c a.out a.exe x no
$e ${ao}Scanning for functions... please ignore any errors.
#
@ -306,7 +309,7 @@ test x"$i" = x"" && ac_flags 1 otwo "-O2"
ac_flags 0 fnotreevrp "-fno-tree-vrp"
if test 1 = $HAVE_CAN_FNOTREEVRP; then
tcbo=1
ac_testn need_fnotreevrp '' "if -fno-tree-vrp is needed" <<-'EOF'
ac_testn need_fnotreevrp '' "if to use it to prevent a gcc bug" <<-'EOF'
typedef unsigned size_t;
char *strncpy(char *, const char *, size_t);
char *
@ -327,21 +330,19 @@ if test 1 = $HAVE_CAN_FNOTREEVRP; then
return (*a);
}
EOF
tcbo=0
f=a.exe
test -f $f || f=a.out
if test -f $f; then
./$f >/dev/null 2>&1
tcbo=
if test -f $tcfn; then
./$tcfn >/dev/null 2>&1
rv=$?
rs=no
else
rv=0
rs="yes (assumed; cannot run ./$f)"
rs="yes (assumed; cannot run ./$tcfn)"
fi
test 1 = $rv && rs=yes
test 2 = $rv || CFLAGS="$CFLAGS -fno-tree-vrp"
$e "$bi==> $fd...$ao ${ui}$rs$ao"
rm -f scn.c a.out a.exe
rm -f scn.c $tcfn
fi
ac_flags 1 fnostrictaliasing "-fno-strict-aliasing"
ac_flags 1 fstackprotectorall "-fstack-protector-all"