dev-libs/dbus-c++: fix installed headers w/ gcc 12, fix build with clang

Bug: https://bugs.gentoo.org/840731
Closes: https://bugs.gentoo.org/737120
Closes: https://bugs.gentoo.org/740068
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 153 insertions, 0 deletions

diff --git a/dev-libs/dbus-c++/dbus-c++-0.9.0-r5.ebuild b/dev-libs/dbus-c++/dbus-c++-0.9.0-r5.ebuild
new file mode 100644
index 000000000000..bd749ca5481f
--- /dev/null
+++ b/dev-libs/dbus-c++/dbus-c++-0.9.0-r5.ebuild
@@ -0,0 +1,64 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit multilib-minimal
+
+DESCRIPTION="Provides a C++ API for D-BUS"
+HOMEPAGE="https://sourceforge.net/projects/dbus-cplusplus/"
+SRC_URI="mirror://sourceforge/dbus-cplusplus/lib${P}.tar.gz"
+
+LICENSE="LGPL-2.1+"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ia64 ~ppc ~ppc64 ~riscv ~sparc ~x86"
+IUSE="doc ecore glib test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	dev-libs/expat
+	sys-apps/dbus[${MULTILIB_USEDEP}]
+	ecore? ( dev-libs/efl )
+	glib? ( dev-libs/glib:2[${MULTILIB_USEDEP}] )"
+DEPEND="${RDEPEND}
+	dev-util/cppunit[${MULTILIB_USEDEP}]"
+BDEPEND="
+	virtual/pkgconfig
+	doc? ( app-doc/doxygen )"
+
+S="${WORKDIR}/lib${P}"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-gcc-4.7.patch #424707
+	"${FILESDIR}"/${PN}-gcc7.patch #622790
+	"${FILESDIR}"/${P}-gcc12.patch
+)
+
+multilib_src_configure() {
+	# TODO : add ecore multilib support if/when it is multilibified
+	ECONF_SOURCE="${S}" econf \
+		--disable-examples \
+		--disable-static \
+		$(multilib_native_use_enable doc doxygen-docs) \
+		$(multilib_native_use_enable ecore) \
+		$(use_enable glib) \
+		$(use_enable test tests) \
+		PTHREAD_LIBS=-lpthread
+	# ACX_PTHREAD sets PTHREAD_CFLAGS but not PTHREAD_LIBS for some reason...
+
+	if multilib_is_native_abi; then
+		# docs don't like out-of-source builds
+		local d
+		for d in img html; do
+			ln -s "${S}"/doc/${d} "${BUILD_DIR}"/doc/${d} || die
+		done
+	fi
+}
+
+multilib_src_install_all() {
+	use doc && HTML_DOCS=( doc/html/. )
+	einstalldocs
+
+	# no static archives
+	find "${ED}" -name '*.la' -delete || die
+}
diff --git a/dev-libs/dbus-c++/files/dbus-c++-0.9.0-gcc12.patch b/dev-libs/dbus-c++/files/dbus-c++-0.9.0-gcc12.patch
new file mode 100644
index 000000000000..9c2b52453df9
--- /dev/null
+++ b/dev-libs/dbus-c++/files/dbus-c++-0.9.0-gcc12.patch
@@ -0,0 +1,89 @@
+https://src.fedoraproject.org/rpms/dbus-c++/blob/rawhide/f/dbus-c++-template-operators.patch
+https://bugs.gentoo.org/737120
+https://bugs.gentoo.org/740068
+
+commit a0b9ef3b469ca23c6a3229d8abb967cbbddcee38
+Author: Peter Williams <peter@newton.cx>
+Date:   Sat Dec 19 21:12:46 2015 -0500
+
+    Fix some weird template/operator issues on OS X.
+    
+    I frankly don't understand at all what's going on here. These fixes
+    derive from:
+    
+    https://chromium.googlesource.com/chromiumos/third_party/dbus-cplusplus/+/c3f69f6be02e31521474dce7eadf6ba4f4a7ce94
+    https://chromium.googlesource.com/chromiumos/third_party/dbus-cplusplus/+/7104857773f790a549d399715482fa23d9b736cd
+    
+    Except I've dropped some changes that break the OS X build for me. Frankly, if
+    it compiles, that's good enough for me.
+
+--- a/include/dbus-c++/types.h
++++ b/include/dbus-c++/types.h
+@@ -89,13 +89,7 @@ public:
+   }
+ 
+   template <typename T>
+-  operator T() const
+-  {
+-    T cast;
+-    MessageIter ri = _msg.reader();
+-    ri >> cast;
+-    return cast;
+-  }
++  operator T() const;
+ 
+ private:
+ 
+@@ -316,7 +310,7 @@ struct type< Struct<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14,
+   }
+ };
+ 
+-} /* namespace DBus */
++extern DXXAPI DBus::MessageIter &operator << (DBus::MessageIter &iter, const DBus::Variant &val);
+ 
+ inline DBus::MessageIter &operator << (DBus::MessageIter &iter, const DBus::Invalid &)
+ {
+@@ -551,6 +545,8 @@ inline DBus::MessageIter &operator >> (DBus::MessageIter &iter, DBus::Signature
+   return ++iter;
+ }
+ 
++extern DXXAPI DBus::MessageIter &operator >> (DBus::MessageIter &iter, DBus::Variant &val);
++
+ template<typename E>
+ inline DBus::MessageIter &operator >> (DBus::MessageIter &iter, std::vector<E>& val)
+ {
+@@ -644,7 +640,16 @@ inline DBus::MessageIter &operator >> (DBus::MessageIter &iter, DBus::Struct<T1,
+   return ++iter;
+ }
+ 
+-extern DXXAPI DBus::MessageIter &operator >> (DBus::MessageIter &iter, DBus::Variant &val);
++template <typename T>
++inline DBus::Variant::operator T() const
++{
++  T cast;
++  DBus::MessageIter ri = _msg.reader();
++  ri >> cast;
++  return cast;
++}
++
++} /* namespace DBus */
+ 
+ #endif//__DBUSXX_TYPES_H
+ 
+--- a/src/types.cpp
++++ b/src/types.cpp
+@@ -34,7 +34,7 @@
+ #include "message_p.h"
+ #include "internalerror.h"
+ 
+-using namespace DBus;
++namespace DBus {
+ 
+ Variant::Variant()
+   : _msg(CallMessage()) // dummy message used as temporary storage for variant data
+@@ -104,3 +104,4 @@ MessageIter &operator >> (MessageIter &iter, Variant &val)
+   return ++iter;
+ }
+ 
++} /* namespace DBus */
+