[mutter/wip/lantw/wayland-on-freebsd: 3/5] build: Use portable sed syntax in src/Makefile.am

[Florian Müllner <fmuellner src gnome org>]

commit 65630d6310817a1ac1cb03749d425bb539994e6a
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sun Jan 7 03:05:51 2018 +0800

    build: Use portable sed syntax in src/Makefile.am
    
    Replace non-portable \+ with \{, \} to avoid build failure on systems
    not using GNU sed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792280

 src/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 3b50bf589..be3010c28 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -750,7 +750,7 @@ $(if $(findstring unstable,$1),unstable,stable)
 endef
 
 define protoname
-$(shell echo $1 | sed 's/\([a-z\-]\+\)-[a-z]\+-v[0-9]\+/\1/')
+$(shell echo $1 | sed 's/\([a-z\-]\{1,\}\)-[a-z]\{1,\}-v[0-9]\{1,\}/\1/')
 endef
 
 %-protocol.c : $(WAYLAND_PROTOCOLS_DATADIR)/$$(call protostability,$$*)/$$(call protoname,$$*)/$$*.xml