time: unbreak cross musl; set _GNU_SOURCE and override wait3 test.

Thanks @pullmoll

common/environment/configure/autoconf_cache/common-linux

@@ -163,3 +163,6 @@ compat_cv_func_makedev_three_args=no
 
 # exo
 ac_cv_strftime_extensions=yes
+
+# time
+ac_cv_func_wait3=yes

srcpkgs/time/template

@@ -1,7 +1,7 @@
 # Template file for 'time'
 pkgname=time
 version=1.7
-revision=6
+revision=7
 build_style=gnu-configure
 short_desc="The GNU time program for measuring cpu resource usage"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
@@ -10,6 +10,9 @@ license="GPL-2"
 distfiles="$GNU_SITE/$pkgname/$pkgname-$version.tar.gz"
 checksum=e37ea79a253bf85a85ada2f7c632c14e481a5fd262a362f6f4fd58e68601496d
 
+# Required by wait3(2) with musl
+CFLAGS="-D_GNU_SOURCE"
+
 do_install() {
 	make bindir="${DESTDIR}/usr/bin" infodir="${DESTDIR}/usr/share/info" install
 }