From 544d3b72627aa0c69ae0d3808b1541689131f47f Mon Sep 17 00:00:00 2001
From: Fergus Dall <sidereal@google.com>
Date: Thu, 24 Sep 2020 18:08:39 +1000
Subject: [PATCH] dev-libs/ustr: Fix compilation using clang/LLVM

This package depends on old-style GCC inline functions, but the
patch to maintain this behaviour on newer compilers only works
for GCC specifically. Replace this with a check for
__GNUC_STDC_INLINE__, which is documented to work with both GCC
and clang.

Closes: https://bugs.gentoo.org/732026
Signed-off-by: Fergus Dall <sidereal@google.com>
---
 .../ustr/files/ustr-1.0.4-inline-check.patch  | 27 ++++++
 dev-libs/ustr/ustr-1.0.4-r9.ebuild            | 83 +++++++++++++++++++
 2 files changed, 110 insertions(+)
 create mode 100644 dev-libs/ustr/files/ustr-1.0.4-inline-check.patch
 create mode 100644 dev-libs/ustr/ustr-1.0.4-r9.ebuild

diff --git a/dev-libs/ustr/files/ustr-1.0.4-inline-check.patch b/dev-libs/ustr/files/ustr-1.0.4-inline-check.patch
new file mode 100644
index 0000000000..b38cf7829c
--- /dev/null
+++ b/dev-libs/ustr/files/ustr-1.0.4-inline-check.patch
@@ -0,0 +1,27 @@
+--- a/ustr-conf.h.in	2007-10-22 08:00:55.000000000 +0200
++++ b/ustr-conf.h.in	2015-09-10 12:24:34.998796842 +0200
+@@ -4,13 +4,23 @@
+ /* this is the custom version for the library itself, for everyone else
+  * ustr-import generates one depending on the options. */
+ 
++/* Ustr relies on GCC's traditional handling of inline functions, not
++ * the version that was actually standardized in C99. GCC-compatible
++ * compilers define __GNUC_STDC_INLINE__ when using the standard
++ * behavior. When this is set we must restore the old inline behavior:
++ */
++#if defined(__GNUC__) \
++ && defined(__GNUC_STDC_INLINE__)
++#  define inline inline __attribute__ ((gnu_inline))
++#endif
++
+ /* The default is now to link against libc. */
+ #ifndef USTR_CONF_INCLUDE_CODEONLY_HEADERS
+ #define USTR_CONF_INCLUDE_CODEONLY_HEADERS 0
+ #endif
+ 
+ /* We can't: if defined(__GLIBC__) && (!defined(_GNU_SOURCE) || !_GNU_SOURCE)
+- *  because by the time we've included a libc header it's too late. */ 
++ *  because by the time we've included a libc header it's too late. */
+ #ifndef _GNU_SOURCE
+ #define _GNU_SOURCE 1
+ #endif
diff --git a/dev-libs/ustr/ustr-1.0.4-r9.ebuild b/dev-libs/ustr/ustr-1.0.4-r9.ebuild
new file mode 100644
index 0000000000..632e404652
--- /dev/null
+++ b/dev-libs/ustr/ustr-1.0.4-r9.ebuild
@@ -0,0 +1,83 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+inherit toolchain-funcs multilib-minimal
+
+DESCRIPTION="Low-overhead managed string library for C"
+HOMEPAGE="http://www.and.org/ustr/"
+SRC_URI="ftp://ftp.and.org/pub/james/ustr/${PV}/${P}.tar.bz2"
+
+LICENSE="|| ( BSD-2 MIT LGPL-2 )"
+SLOT="0"
+KEYWORDS="amd64 ~arm ~arm64 ~mips x86"
+IUSE="static-libs ustr-import"
+
+DOCS=(ChangeLog README README-DEVELOPERS AUTHORS NEWS TODO)
+
+MULTILIB_WRAPPED_HEADERS=(
+	/usr/include/ustr-conf.h
+	/usr/include/ustr-conf-debug.h
+)
+
+src_prepare() {
+	epatch "${FILESDIR}/${P}-inline-check.patch"
+	epatch "${FILESDIR}/${PN}-1.0.4-build-libs.patch"
+	multilib_copy_sources
+}
+
+_emake() {
+	emake \
+		USE_STATIC=$(usex static-libs) \
+		AR="$(tc-getAR)" \
+		CC="$(tc-getCC)" \
+		CFLAGS="${CFLAGS} ${CPPFLAGS}" \
+		LDFLAGS="${LDFLAGS}" \
+		prefix="${EPREFIX}/usr" \
+		libdir="${EPREFIX}/usr/$(get_libdir)" \
+		mandir="${EPREFIX}/usr/share/man" \
+		SHRDIR="${EPREFIX}/usr/share/${P}" \
+		DOCSHRDIR="${EPREFIX}/usr/share/doc/${PF}" \
+		HIDE= \
+		"$@"
+}
+
+multilib_src_configure() {
+	# The included configure tests require execution.
+
+	# We require vsnprintf everywhere as it's in POSIX.
+	printf '#!/bin/sh\necho 0\n' > autoconf_vsnprintf
+	chmod a+rx autoconf_vsnprintf
+
+	# Always use stdint.h as it's in POSIX.
+	sed -i '/have_stdint_h=0/s:=0:=1:' Makefile || die
+
+	# Figure out the size of size_t.
+	printf '#include <sys/types.h>\nint main() { char buf[sizeof(size_t) - 8]; }\n' > sizet_test.c
+	 $(tc-getCC) ${CPPFLAGS} ${CFLAGS} -c sizet_test.c 2>/dev/null
+	printf '#!/bin/sh\necho %s\n' $(( $? == 0 )) > autoconf_64b
+	chmod a+rx autoconf_64b
+
+	# Generate the config file now to avoid bad makefile deps.
+	_emake ustr-import
+}
+
+multilib_src_compile() {
+	_emake all-shared
+}
+
+multilib_src_install() {
+	_emake DESTDIR="${D}" install
+
+	if ! use ustr-import ; then
+		rm -r \
+			"${ED}/usr/bin/ustr-import" \
+			"${ED}/usr/share/man/man1/ustr-import.1" \
+			"${ED}/usr/share/${P}" || die
+	fi
+}
+
+multilib_src_test() {
+	_emake check
+}
-- 
2.28.0.681.g6f77f65b4e-goog