# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: Exp $

# @ECLASS: mysql.cmake.eclass
# @BLURB: This eclass provides the cmake configure functions for mysql ebuilds
# @DESCRIPTION:
# The mysql.cmake.eclass provides the code to configure the mysql ebuilds
# including the src_prepare, src_configure, src_compile phase hooks.

inherit cmake-utils mysql

case "${EAPI:-0}" in
	2)
		EXPORT_FUNCTIONS src_prepare src_compile src_configure
		IUSE_DEFAULT_ON='+'
		;;
	0 | 1)
		EXPORT_FUNCTIONS src_prepare src_compile
		;;
	*)
		die "Unsupported EAPI: ${EAPI}" ;;
esac

if use debug ; then
	CMAKE_BUILD_TYPE="Debug"
else
	CMAKE_BUILD_TYPE="RelWithDebInfo"
fi

#
# HELPER FUNCTIONS:
#

configure_minimal_cmake() {
	# These are things we exclude from a minimal build, please
	# note that the server actually does get built and installed,
	# but we then delete it before packaging.
	mycmakeargs+=(
		-DWITH_EMBEDDED_SERVER=0
		-DWITHOUT_INNOBASE_STORAGE_ENGINE=1
		-DINSTALL_SQLBENCHDIR=
		-DWITH_READLINE=0
		-DENABLED_LOCAL_INFILE=1
		-DEXTRA_CHARSETS=none
		-DMYSQL_USER=mysql
		-DMYSQL_UNIX_ADDR=/var/run/mysqld/mysqld.sock
		-DWITH_LIBWRAP=0
		-DWITHOUT_SERVER=1)

	if use static ; then
		mycmakeargs+=(
			-DDISABLE_SHARED=1
			-DWITH_PIC=1)
	else
		mycmakeargs+=( -DDISABLED_SHARED=0)
	fi

	if mysql_version_is_at_least "4.1" && ! use latin1 ; then
		mycmakeargs+=(
			-DDEFAULT-CHARSET=utf8
			-DDEFAULT-COLLATION=utf8_general_ci)
	else
		mycmakeargs+=(
			-DDEFAULT-CHARSET=latin1
			-DDEFAULT-COLLATION=latin1_swedish_ci)
	fi
}

configure_common_cmake() {
	mycmakeargs+=(
		-DENABLED_LOCAL_INFILE=1
		-DEXTRA_CHARSETS=all
		-DMYSQL_USER=mysql
		-DMYSQL_UNIX_ADDR=/var/run/mysqld/mysqld.sock
		-DWITH_LIBWRAP=0
		-DWITHOUT_SERVER=0)

	if use static ; then
		mycmakeargs+=(
			-DDISABLE_SHARED=1
			-DWITH_PIC=1)
	else
		mycmakeargs+=( -DDISABLED_SHARED=0)
	fi

	mycmakeargs+=( $(cmake-utils_use_with debug DEBUG) )
	if mysql_version_is_at_least "4.1.3" \
		&& ( use cluster || [[ "${PN}" == "mysql-cluster" ]] ) \
		; then
		mycmakeargs+=( $(cmake-utils_use_with debug NDB-DEBUG))
	fi

	if [ -n "${MYSQL_DEFAULT_CHARSET}" -a -n "${MYSQL_DEFAULT_COLLATION}" ]; then
		ewarn "You are using a custom charset of ${MYSQL_DEFAULT_CHARSET}"
		ewarn "and a collation of ${MYSQL_DEFAULT_COLLATION}."
		ewarn "You MUST file bugs without these variables set."
		mycmakeargs+=(
			-DDEFAULT-CHARSET="${MYSQL_DEFAULT_CHARSET}"
			-DDEFAULT-COLLATION="${MYSQL_DEFAULT_COLLATION}")
	elif mysql_version_is_at_least "4.1" && ! use latin1 ; then
		mycmakeargs+=(
			-DDEFAULT-CHARSET=utf8
			-DDEFAULT-COLLATION=utf8_general_ci)
	else
		mycmakeargs+=(
			-DDEFAULT-CHARSET=latin1
			-DDEFAULT-COLLATION=latin1_swedish_ci)
	fi

	mycmakeargs+=( 
		$(cmake-utils_use_with embedded EMBEDDED_SERVER) 
		$(cmake-utils_use_has embedded EMBEDDED_PRIVILEGE_CONTROL))

}

configure_55() {
	# TODO: !!!! readd --without-readline
	# the failure depend upon config/ac-macros/readline.m4 checking into
	# readline.h instead of history.h
	if use ssl ; then
		mycmakeargs+=( -DWITH_SSL=system)
	else
		mycmakeargs+=( -DWITH_SSL=no)
	fi
	mycmakeargs+=(
		-DWITH-ZLIB=system
		-DWITH-READLINE=1
		-DINSTALL_PLUGINDIR="${MY_LIBDIR}/plugin")

	# This is an explict die here, because if we just forcibly disable it, then the
	# user's data is not accessible.
	use max-idx-128 && die "MySQL 5.5 has removed support for increasing the size of MyISAM indexes."

	if [ "${MYSQL_COMMUNITY_FEATURES}" == "1" ]; then
		mycmakeargs+=( $(cmake-utils_use_enable profiling PROFILING))
	fi

	# Scan for all available plugins
	local plugins_avail="$(
	LANG=C \
	find "${S}" \
		\( \
		-name 'plug.in' \
		-o -iname 'configure.in' \
		-o -iname 'configure.ac' \
		\) \
		-print0 \
	| xargs -0 sed -r -n \
		-e '/^MYSQL_STORAGE_ENGINE/{
			s~MYSQL_STORAGE_ENGINE\([[:space:]]*\[?([-_a-z0-9]+)\]?.*,~\1 ~g ;
			s~^([^ ]+).*~\1~gp; 
		}' \
	| tr -s '\n' ' '
	)"

	# 5.1 introduces a new way to manage storage engines (plugins)
	# like configuration=none
	# This base set are required, and will always be statically built.
	local plugins_sta=""
	local plugins_dyn=""
	local plugins_dis="example daemon_example ftexample"

	# These aren't actually required by the base set, but are really useful:
	plugins_sta="${plugins_sta} archive blackhole"

	# default in 5.5.4
	if mysql_version_is_at_least "5.5.4" ; then
		plugins_sta="${plugins_sta} partition"
	fi
	# Now the extras
	if use extraengine ; then
		# like configuration=max-no-ndb, archive and example removed in 5.1.11
		# not added yet: ibmdb2i
		# Not supporting as examples: example,daemon_example,ftexample
		plugins_sta="${plugins_sta} partition"

		if [[ "${PN}" != "mariadb" ]] ; then
			elog "Before using the Federated storage engine, please be sure to read"
			elog "http://dev.mysql.com/doc/refman/5.5/en/federated-limitations.html"
			plugins_dyn="${plugins_sta} federated"
		else
			elog "MariaDB includes the FederatedX engine. Be sure to read"
			elog "http://askmonty.org/wiki/index.php/Manual:FederatedX_storage_engine"
			plugins_dyn="${plugins_sta} federatedx"
		fi
	else
		plugins_dis="${plugins_dis} partition federated"
	fi

	# Upstream specifically requests that InnoDB always be built:
	# - innobase, innodb_plugin
	# Build falcon if available for 6.x series.
	for i in innobase falcon ; do
		[ -e "${S}"/storage/${i} ] && plugins_sta="${plugins_sta} ${i}"
	done
	for i in innodb_plugin ; do
		[ -e "${S}"/storage/${i} ] && plugins_dyn="${plugins_dyn} ${i}"
	done

	# like configuration=max-no-ndb
	if ( use cluster || [[ "${PN}" == "mysql-cluster" ]] ) ; then
		plugins_sta="${plugins_sta} ndbcluster partition"
		plugins_dis="${plugins_dis//partition}"
		myconf="${myconf} --with-ndb-binlog"
	else
		plugins_dis="${plugins_dis} ndbcluster"
	fi

	if [[ "${PN}" == "mariadb" ]] ; then
		# In MariaDB, InnoDB is packaged in the xtradb directory, so it's not
		# caught above.
		# This is not optional, without it several upstream testcases fail.
		# Also strongly recommended by upstream.
		if [[ "${PV}" < "5.2.0" ]] ; then
			mycmakeargs+=( -DWITH_MARIA_TMP_TABLES)
			plugins_sta="${plugins_sta} maria"
		else
			mycmakeargs+=( -DWITH_ARIA_TMP_TABLES)
			plugins_sta="${plugins_sta} aria"
		fi

		[ -e "${S}"/storage/innobase ] || [ -e "${S}"/storage/xtradb ] ||
			die "The ${P} package doesn't provide innobase nor xtradb"

		for i in innobase xtradb ; do
			[ -e "${S}"/storage/${i} ] && plugins_sta="${plugins_sta} ${i}"
		done
		
		mycmakeargs+=( $(cmake-utils_use_with libevent))

		if mysql_version_is_at_least "5.2" ; then
			#This should include sphinx, but the 5.2.4 archive forgot the plug.in file
			#for i in oqgraph sphinx ; do
			for i in oqgraph ; do
				use ${i} \
				&& plugins_dyn="${plugins_dyn} ${i}" \
				|| plugins_dis="${plugins_dis} ${i}"
			done
		fi
	fi

	if pbxt_available && [[ "${PBXT_NEWSTYLE}" == "1" ]]; then
		use pbxt \
		&& plugins_dyn="${plugins_dyn} pbxt" \
		|| plugins_dis="${plugins_dis} pbxt"
	fi

	use static && \
	plugins_sta="${plugins_sta} ${plugins_dyn}" && \
	plugins_dyn=""

	einfo "Available plugins: ${plugins_avail}"
	einfo "Dynamic plugins: ${plugins_dyn}"
	einfo "Static plugins: ${plugins_sta}"
	einfo "Disabled plugins: ${plugins_dis}"

	local uper
	# These are the static plugins
	for i in ${plugins_sta} ; do
		uper=$(echo ${i} | tr '[:lower:]' '[:upper:]')
		mycmakeargs+=( -DWITH_${uper}=1)
	done
	# And the disabled ones
	for i in ${plugins_dis} ; do
		uper=$(echo ${i} | tr '[:lower:]' '[:upper:]')
		mycmakeargs+=( -DWITHOUT_${uper}=1)
	done
}

# @FUNCTION: mysql_src_configure
# @DESCRIPTION:
# Configure mysql to build the code for Gentoo respecting the use flags.
mysql.cmake_src_configure() {
	# Make sure the vars are correctly initialized
	mysql_init_vars

	# $myconf is modified by the configure_* functions
	local mycmakeargs=(
		-DCMAKE_INSTALL_PREFIX=/usr
		-DINSTALL_SBINDIR=sbin
		-DSYSCONFDIR="${MY_SYSCONFDIR}"
		-DMYSQL_DATADIR="${MY_DATADIR}"
		-DINSTALL_MYSQLSHAREDIR="${MY_SHAREDSTATEDIR}"
		-DINSTALL_MYSQLDATADIR="${MY_LOCALSTATEDIR}"
		-DINSTALL_LIBDIR="${MY_LIBDIR}"
		-DINSTALL_MANDIR=share/man
		-DINSTALL_INFODIR=share/info
		-DINSTALL_DOCREADMEDIR="share/doc/${PF}"
		-DINSTALL_DOCDIR="share/doc/${PF}"
		-DINSTALL_SCRIPTDIR="share/doc/${PF}/scripts"
		-DINSTALL_SQLBENCHDIR="${MY_SHAREDSTATEDIR}"
		-DINSTALL_MYSQLTESTDIR="${MY_SHAREDSTATEDIR}"/mysql-test
		-DINSTALL_SUPPORTFILESDIR="${MY_SHAREDSTATEDIR}"
		-DWITH_COMMENT="Gentoo Linux ${PF}")

	if use minimal ; then
		configure_minimal_cmake
	else
		configure_common_cmake
		if mysql_version_is_at_least "5.5.0" ; then
			configure_55
		fi
	fi

	# Bug #114895, bug #110149
	filter-flags "-O" "-O[01]"

	# glib-2.3.2_pre fix, bug #16496
	append-flags "-DHAVE_ERRNO_AS_DEFINE=1"

	# As discovered by bug #246652, doing a double-level of SSP causes NDB to
	# fail badly during cluster startup.
	if [[ $(gcc-major-version) -lt 4 ]]; then
		filter-flags "-fstack-protector-all"
	fi

	CXXFLAGS="${CXXFLAGS} -fno-exceptions -fno-strict-aliasing"
	CXXFLAGS="${CXXFLAGS} -felide-constructors -fno-rtti"
	mysql_version_is_at_least "5.0" \
	&& CXXFLAGS="${CXXFLAGS} -fno-implicit-templates"

	export CXXFLAGS

	# bug #283926, with GCC4.4, this is required to get correct behavior.
	append-flags -fno-strict-aliasing
	
	# bug #335185, #335995, with >= GCC4.3.3 on x86 only, omit-frame-pointer
	# causes a mis-compile.
	# Upstream bugs:
	# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38562
	# http://bugs.mysql.com/bug.php?id=45205
	use x86 && version_is_at_least "4.3.3" "$(gcc-fullversion)" && \
		append-flags -fno-omit-frame-pointer && \
		filter-flags -fomit-frame-pointer

	export CFLAGS

	cmake-utils_src_configure

	if [[ $EAPI == 2 ]] && [[ "${PBXT_NEWSTYLE}" != "1" ]]; then
		pbxt_patch_available && use pbxt && pbxt_src_configure
	fi
}

# @FUNCTION: mysql_src_compile
# @DESCRIPTION:
# Compile the mysql code.
mysql.cmake_src_compile() {
	# Be backwards compatible for now
	case ${EAPI:-0} in
		2) : ;;
		0 | 1) mysql.cmake_src_configure ;;
	esac

	cmake-utils_src_compile

	if [[ "${PBXT_NEWSTYLE}" != "1" ]]; then
		pbxt_patch_available && use pbxt && pbxt_src_compile
	fi
}


# @FUNCTION: mysql_src_prepare
# @DESCRIPTION:
# Apply patches to the source code and remove unneeded bundled libs.
mysql.cmake_src_prepare() {
	cd "${S}"

	# Apply the patches for this MySQL version
	EPATCH_SUFFIX="patch"
	mkdir -p "${EPATCH_SOURCE}" || die "Unable to create epatch directory"
	# Clean out old items
	rm -f "${EPATCH_SOURCE}"/*
	# Now link in right patches
	mysql_mv_patches
	# And apply
	epatch

	# last -fPIC fixup, per bug #305873
	i="${S}"/storage/innodb_plugin/plug.in
	[ -f "${i}" ] && sed -i -e '/CFLAGS/s,-prefer-non-pic,,g' "${i}"

	# Additional checks, remove bundled zlib (Cluster needs this, for static
	# memory management in zlib, leave available for Cluster)
	if [[ "${PN}" != "mysql-cluster" ]] ; then
		rm -f "${S}/zlib/"*.[ch]
		sed -i -e "s/zlib\/Makefile dnl/dnl zlib\/Makefile/" "${S}/configure.in"
	fi
	rm -f "scripts/mysqlbug"

	if xtradb_patch_available && use xtradb ; then
		einfo "Adding storage engine: Percona XtraDB (replacing InnoDB)"
		pushd "${S}"/storage >/dev/null
		i="innobase"
		o="${WORKDIR}/storage-${i}.mysql-upstream"
		# Have we been here already?
		[ -d "${o}" ] && rm -f "${i}"
		# Or maybe we haven't
		[ -d "${i}" -a ! -d "${o}" ] && mv "${i}" "${o}"
		cp -ral "${WORKDIR}/${XTRADB_P}" "${i}"
		popd >/dev/null
	fi

	if pbxt_patch_available && [[ "${PBXT_NEWSTYLE}" == "1" ]] && use pbxt ; then
		einfo "Adding storage engine: PBXT"
		pushd "${S}"/storage >/dev/null
		i='pbxt'
		[ -d "${i}" ] && rm -rf "${i}"
		cp -ral "${WORKDIR}/${PBXT_P}" "${i}"
		popd >/dev/null
		sed --in-place -e 's!MYSQL_STORAGE_ENGINE(PBXT)!IF(MYSQL_VERSION_MINOR LESS 5) \
				  MYSQL_STORAGE_ENGINE(PBXT) \
				ELSE() \
					MYSQL_ADD_PLUGIN(pbxt \${PBXT_SOURCES} STORAGE_ENGINE DEFAULT MODULE_OUTPUT_NAME ha_pbxt) \
				ENDIF()!' \
			"${S}/storage/pbxt/CMakeLists.txt"
	fi
	# This should probably be a gentoo patch instead of a sed
	sed --in-place -e 's!DESTINATION data!DESTINATION ${MYSQL_DATADIR}!g' "${S}/sql/CMakeLists.txt"
}