+ test -z "$CC" && CC=gcc
+ : >errs1.c
+ for flags in \
+ "-ggdb2 -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4" \
+ "-ggdb2 -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions" \
+ "" \
+ ;do
+ if [ -z "$flags" ];then
+ rm -f errs1.c
+ echo >&2 "flags error"
+ exit 1
+ fi
+ "$CC" $flags -c errs1.c -o /dev/null && break
+ done
+ if test -n "$customm" && "$CC" $customm -c errs1.c -o /dev/null;then
+ flags="$customm $flags"
+ fi
+ rm -f errs1.c