libgo: change mksigtab to recognize glibc 2.26 NSIG expression
Fixes golang/go#21147
Fixes GCC PR 81617
Change-Id: I3d63704a45530faea28ab18278550c9b923f434f
Reviewed-on: https://go-review.googlesource.com/52611
Reviewed-by: Than McIntosh <thanm@google.com>
diff --git a/libgo/mksigtab.sh b/libgo/mksigtab.sh
index c331970..2b07dd4 100755
--- a/libgo/mksigtab.sh
+++ b/libgo/mksigtab.sh
@@ -107,6 +107,19 @@
nsig=`expr $nsig + 1`
else
nsig=`grep 'const _*NSIG = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'`
+ if test -z "$nsig"; then
+ if grep 'const _*NSIG = [ (]*_*SIGRTMAX + 1[ )]*' gen-sysinfo.go >/dev/null 2>&1; then
+ rtmax=`grep 'const _*SIGRTMAX = [0-9]*$' gen-sysinfo.go | sed -e 's/.* = \([0-9]*\)/\1/'`
+ if test -n "$rtmax"; then
+ nsig=`expr $rtmax + 1`
+ fi
+ fi
+ fi
+fi
+
+if test -z "$nsig"; then
+ echo 1>&2 "could not determine number of signals"
+ exit 1
fi
i=1
