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add check for broken OpenBSD fclose()

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http://marc.info/?l=openbsd-bugs&m=145280872431093&w=2

closes #95
This commit is contained in:
rofl0r
2016-02-04 12:49:43 +00:00
parent a1c31e73b6
commit b64c89e0e4
2 changed files with 28 additions and 0 deletions
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26
configure vendored
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@ -32,6 +32,27 @@ check_compile() {
return $res
}
check_define() {
printf "checking whether \$CC defines %s ... " "$1"
local res=1
$CC $CPPFLAGS $CFLAGS -dM -E - </dev/null | grep "$1" >/dev/null && res=0
test x$res = x0 && printf "yes\n" || printf "no\n"
return $res
}
check_compile_run() {
printf "checking %s ... " "$1"
local tmp=$(mktemp)
printf "$2" > "$tmp".c
local res=0
$CC $CPPFLAGS $CFLAGS "$tmp".c -o "$tmp".out >/dev/null 2>&1 \
|| res=1
test x$res = x0 && { "$tmp".out || res=1 ; }
rm -f "$tmp".c "$tmp".o "$tmp".out
test x$res = x0 && printf "yes\n" || printf "no\n"
return $res
}
usage() {
echo "supported arguments"
echo "--prefix=/path default: $prefix"
@ -111,6 +132,11 @@ check_compile 'whether netinet/in.h defines __u6_addr.__u6_addr16' \
'#include <netinet/in.h>\nint main(int a, char**c){struct in6_addr x={.s6_addr32[0]=a};return x.s6_addr16[0]; }'
}
check_define __OpenBSD__ && \
check_compile_run 'whether OpenBSDs fclose() (illegally) calls close()' \
'#include <stdio.h>\n#include<stdlib.h>\nint close(int x){exit(0);}int main(){fclose(stdin);return 1;}' && \
CPPFLAGS="$CPPFLAGS -DBROKEN_FCLOSE"
echo CC?=$CC>config.mak
[ -z "$CPPFLAGS" ] || echo CPPFLAGS?=$CPPFLAGS>>config.mak
[ -z "$CFLAGS" ] || echo USER_CFLAGS?=$CFLAGS>>config.mak