dev-libs/libzia: Fix build problems

- Package did only build if older version was already installed.
- Disable parallel build, as one part of the package needs the library
  to already be build.

Signed-off-by: Thomas Beierlein <tomjbe@gentoo.org>
Package-Manager: Portage-2.3.51, Repoman-2.3.11

dev-libs/libzia/files/libzia-4.14-ldadd.patch

@@ -0,0 +1,16 @@
+# add local .libs directory to library search path during build of zsdltest
+--- src/Makefile.am.orig	2018-10-19 18:19:54.067784664 +0200
++++ src/Makefile.am	2018-10-19 18:20:26.419265774 +0200
+@@ -71,9 +71,10 @@
+ 
+ zsdltest_SOURCES = zsdltest.c
+ zsdltest_LDFLAGS = -lzia 
++zsdltest_LDADD = -L.libs
+ 
+-gpiotest_SOURCES = gpiotest.c
+-gpiotest_LDFLAGS = -lzia 
++#gpiotest_SOURCES = gpiotest.c
++#gpiotest_LDFLAGS = -lzia 
+ 
+ EXTRA_DIST = regcomp.c regex_internal.c regexec.c 
+ 

dev-libs/libzia/libzia-4.14.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -22,10 +22,15 @@ RDEPEND="dev-libs/glib:2
 DEPEND="${RDEPEND}
 	virtual/pkgconfig"
 
+PATCHES=( "${FILESDIR}"/$P-ldadd.patch )
+
+MAKEOPTS+=" -j1"
+
 src_prepare() {
 	eapply_user
+	eapply -p0 ${PATCHES}
 	sed -i -e "s/docsdir/#docsdir/g" \
-		   -e "s/docs_/#docs_/g" Makefile.am || die
+		-e "s/docs_/#docs_/g" Makefile.am || die
 	eautoreconf
 }