dev-lang/srf: fix build with gcc-10

Closes: https://bugs.gentoo.org/712054
Package-Manager: Portage-3.0.9, Repoman-3.0.1
Signed-off-by: Jakov Smolic <jakov.smolic@sartura.hr>
Signed-off-by: David Seifert <soap@gentoo.org>

dev-lang/srf/files/srf-1.0-fno-common.patch

@@ -0,0 +1,8 @@
+--- a/builtins.h
++++ b/builtins.h
+@@ -20,4 +20,4 @@
+ */
+ #ident "$Id: builtins.h,v 1.4 2004/11/02 04:39:39 bediger Exp $"
+ void setup_builtins(void);
+-int primitive_call_counter;
++extern int primitive_call_counter;

dev-lang/srf/srf-1.0-r2.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=6
 
-inherit eutils vcs-clean
+inherit vcs-clean
 
 DESCRIPTION="The Simple Recursive Functions programming language"
 HOMEPAGE="http://www.stratigery.com/srf.html"
@@ -12,12 +12,12 @@ SRC_URI="http://www.stratigery.com/srf.html/${P}.tar.gz"
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="~amd64 ~x86 ~x86-linux ~ppc-macos"
-IUSE=""
 
 DEPEND="
 	sys-devel/flex
 	virtual/yacc"
-RDEPEND=""
+
+PATCHES=( "${FILESDIR}"/${P}-fno-common.patch )
 
 src_prepare() {
 	default
@@ -30,6 +30,5 @@ src_install() {
 	doman srf.1
 	dodoc README srf.html
 
-	docinto examples
-	dodoc examples/*
+	dodoc -r examples
 }