dev-cpp/libmcpp: fix configure checks, EAPI 8

Signed-off-by: Sam James <sam@gentoo.org>

dev-cpp/libmcpp/files/libmcpp-2.7.2-fix-configure-checks.patch

@@ -0,0 +1,34 @@
+https://cgit.openembedded.org/meta-openembedded/plain/meta-oe/recipes-devtools/mcpp/files/0001-configure-Fix-checks-for-system-headers.patch?id=6721430ca97aa98208cc1c450e4e8c4c274ca840
+
+From c1e9f2f3d086e0df3c10a2468fd7b37fd0c5038c Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 7 Sep 2022 00:02:08 -0700
+Subject: [PATCH] configure: Fix checks for system headers
+
+Define _DEFAULT_SOURCE in system.c so unistd.h can expose readlink API
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+--- a/configure.ac
++++ b/configure.ac
+@@ -152,7 +152,7 @@ fi
+ 
+ dnl Checks for header files.
+ 
+-AC_CHECK_HEADERS( [unistd.h, stdint.h, inttypes.h])
++AC_CHECK_HEADERS( [unistd.h stdint.h inttypes.h])
+ 
+ dnl Checks for typedefs, and compiler characteristics.
+ 
+--- a/src/system.c
++++ b/src/system.c
+@@ -36,6 +36,8 @@
+  *      1. specify the constants in "configed.H" or "noconfig.H",
+  *      2. append the system-dependent routines in this file.
+  */
++
++#define _DEFAULT_SOURCE
+ #if PREPROCESSED
+ #include    "mcpp.H"
+ #else

dev-cpp/libmcpp/libmcpp-2.7.2_p5-r1.ebuild

@@ -0,0 +1,46 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools
+
+MY_PN=${PN/lib/}
+MY_P=$(ver_cut 1-4 ${MY_PN}-${PV})
+
+DESCRIPTION="A portable C++ preprocessor"
+HOMEPAGE="http://mcpp.sourceforge.net"
+SRC_URI="mirror://sourceforge/mcpp/${MY_P}.tar.gz"
+SRC_URI+=" mirror://debian/pool/main/m/${MY_PN}/${MY_PN}_${PV/_p/-}.debian.tar.xz"
+S="${WORKDIR}"/${MY_P}
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ia64 ~ppc64 ~riscv ~x86 ~x86-linux ~x64-macos"
+
+PATCHES=(
+	# bug #718808
+	"${WORKDIR}"/debian/patches/
+
+	"${FILESDIR}"/${PN}-2.7.2-fix-build-system.patch
+	"${FILESDIR}"/${PN}-2.7.2-fix-configure-checks.patch
+)
+
+src_prepare() {
+	default
+
+	# bug #778461
+	sed -i 's/-lmcpp/libmcpp.la/' src/Makefile.am || die
+
+	eautoreconf
+}
+
+src_configure() {
+	econf --enable-mcpplib
+}
+
+src_install() {
+	default
+
+	find "${ED}" -name '*.la' -delete || die
+}