dev-db/mysql-connector-c++: fix loading libmysqlclient.so

mysql-workbench would fail with mysql-connector-c++ 8.x because it
would try to load the obsolete libmysqlclient_r library. This version
no longer exists in newer versions of mysql-connector-c. It turns out
that mysql-connector-c++ has hard-coded references to this library
but since we don't install compatibility symlinks this hardcoded
reference will fail.

Closes: https://bugs.gentoo.org/831664
Signed-off-by: Hans de Graaff <graaff@gentoo.org>

2 files changed, 69 insertions, 0 deletions

diff --git a/dev-db/mysql-connector-c++/files/mysql-connector-c++-8.0.27-mysqlclient_r.patch b/dev-db/mysql-connector-c++/files/mysql-connector-c++-8.0.27-mysqlclient_r.patch
new file mode 100644
index 000000000000..d929601f037f
--- /dev/null
+++ b/dev-db/mysql-connector-c++/files/mysql-connector-c++-8.0.27-mysqlclient_r.patch
@@ -0,0 +1,24 @@
+--- a/jdbc/FindMySQL.cmake	2021-09-10 18:31:29.000000000 +0200
++++ b/jdbc/FindMySQL.cmake	2022-01-21 07:40:03.224705056 +0100
+@@ -282,8 +282,8 @@
+   # there, pick "libmysqlclient" that in 5.5 and up is multithreaded
+   # anyway (soft link "libmysqlclient_r" is not installed MySQL Server
+   # 5.6 and Debian/Ubuntu and might go in 5.7 for all installs)
+-  set(_dynamic_libs   "mysqlclient_r"      "mysqlclient")
+-  set(_static_libs    "libmysqlclient_r.a" "libmysqlclient.a")
++  set(_dynamic_libs   "mysqlclient")
++  set(_static_libs    "libmysqlclient.a")
+   set(_static_lib_ext ".a")
+ endif()
+ 
+--- a/jdbc/driver/nativeapi/libmysql_dynamic_proxy.cpp	2022-01-21 07:52:41.224586087 +0100
++++ b/jdbc/driver/nativeapi/libmysql_dynamic_proxy.cpp	2022-01-21 07:52:50.168631719 +0100
+@@ -49,7 +49,7 @@
+ #elif defined(__hpux) && defined(__hppa)
+ static const char * const baseName = "libmysqlclient_r.sl";
+ #else
+-static const char * const baseName = "libmysqlclient_r.so";
++static const char * const baseName = "libmysqlclient.so";
+ #endif
+ 
+ template<typename FunctionType>
diff --git a/dev-db/mysql-connector-c++/mysql-connector-c++-8.0.27-r1.ebuild b/dev-db/mysql-connector-c++/mysql-connector-c++-8.0.27-r1.ebuild
new file mode 100644
index 000000000000..9ca9944b1c86
--- /dev/null
+++ b/dev-db/mysql-connector-c++/mysql-connector-c++-8.0.27-r1.ebuild
@@ -0,0 +1,45 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="7"
+
+CMAKE_MAKEFILE_GENERATOR=emake
+inherit cmake
+
+DESCRIPTION="MySQL database connector for C++ (mimics JDBC 4.0 API)"
+HOMEPAGE="https://dev.mysql.com/downloads/connector/cpp/"
+URI_DIR="Connector-C++"
+SRC_URI="https://dev.mysql.com/get/Downloads/${URI_DIR}/${P}-src.tar.gz"
+
+LICENSE="Artistic GPL-2"
+SLOT="0"
+# -ppc, -sparc for bug #711940
+KEYWORDS="~amd64 ~arm ~arm64 -ppc ~ppc64 -sparc ~x86"
+IUSE="+legacy"
+
+RDEPEND="
+	dev-libs/protobuf:=
+	legacy? (
+		dev-libs/boost:=
+		>=dev-db/mysql-connector-c-8.0.27:=
+	)
+	dev-libs/openssl:0=
+	"
+DEPEND="${RDEPEND}"
+S="${WORKDIR}/${P}-src"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-8.0.27-fix-build.patch
+	"${FILESDIR}"/${PN}-8.0.27-mysqlclient_r.patch
+)
+
+src_configure() {
+	local mycmakeargs=(
+		-DWITH_SSL=system
+		-DWITH_JDBC=$(usex legacy ON OFF)
+		$(usex legacy '-DMYSQLCLIENT_STATIC_BINDING=0' '')
+		$(usex legacy '-DMYSQLCLIENT_STATIC_LINKING=0' '')
+	)
+
+	cmake_src_configure
+}