dev-libs/leveldb: Revert drop 1.20

Reverts: 5d0bd6ede5c8f6107be8c62ea98ec9aafe79c58a
Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

4 files changed, 150 insertions, 0 deletions

diff --git a/dev-libs/leveldb/Manifest b/dev-libs/leveldb/Manifest
index 02ce0049311b..26c4a7fc073c 100644
--- a/dev-libs/leveldb/Manifest
+++ b/dev-libs/leveldb/Manifest
@@ -1 +1,2 @@
+DIST leveldb-1.20.tar.gz 223141 BLAKE2B 57ab5cb191679b8fbfaa28fa0a61ee1dcd757bb9c70215dd325daebfd93b30aa9bbe3c993a1758aa9804a7cd6f2c31df7cf98bdf98320cd1aebc14f5eb77d9a5 SHA512 c59258f2f58ce2d5680e9ab3da4ab0923d91cd4648dcf63cdaa26cdde92bf45e094544539ad11d8e09a4a4813435286143ed0e86c21c6c31a0596903ed4744d2
 DIST leveldb-1.23.tar.gz 242925 BLAKE2B ef9ac853cdc2f376b9b4299c1017db8c262cb318ad771f40fe81c9fb71ea06ee56ac533b3e8af4e6fdd28577a2f87cfd103ecb49098187d099ccd6019b8ca1d2 SHA512 ac15eac29387b9f702a901b6567d47a9f8c17cf5c7d8700a77ec771da25158c83b04959c33f3d4de7a3f033ef08f545d14ba823a8d527e21889c4b78065b0f84
diff --git a/dev-libs/leveldb/files/leveldb-1.18-configure.patch b/dev-libs/leveldb/files/leveldb-1.18-configure.patch
new file mode 100644
index 000000000000..ba30fc731ad5
--- /dev/null
+++ b/dev-libs/leveldb/files/leveldb-1.18-configure.patch
@@ -0,0 +1,52 @@
+we'll handle configure ourselves in src_configure
+
+--- a/Makefile
++++ b/Makefile
+@@ -14,9 +14,6 @@ OPT ?= -O2 -DNDEBUG
+ # OPT ?= -O2 -g2 -DNDEBUG
+ #-----------------------------------------------
+ 
+-# detect what platform we're building on
+-$(shell CC="$(CC)" CXX="$(CXX)" TARGET_OS="$(TARGET_OS)" \
+-    ./build_detect_platform build_config.mk ./)
+ # this file is generated by the previous line to set build flags and sources
+ include build_config.mk
+ 
+
+control snappy/tcmalloc explicitly
+
+--- a/build_detect_platform
++++ a/build_detect_platform
+@@ -190,6 +190,7 @@
+         COMMON_FLAGS="$COMMON_FLAGS -DLEVELDB_PLATFORM_POSIX"
+     fi
+ 
++if [ "${USE_SNAPPY:-auto}" = "auto" ]; then
+     # Test whether Snappy library is installed
+     # http://code.google.com/p/snappy/
+     $CXX $CXXFLAGS -x c++ - -o $CXXOUTPUT 2>/dev/null  <<EOF
+@@ -197,15 +198,24 @@
+       int main() {}
+ EOF
+     if [ "$?" = 0 ]; then
++        USE_SNAPPY="yes"
++    fi
++fi
++    if [ "$USE_SNAPPY" = "yes" ]; then
+         COMMON_FLAGS="$COMMON_FLAGS -DSNAPPY"
+         PLATFORM_LIBS="$PLATFORM_LIBS -lsnappy"
+     fi
+ 
++if [ "${USE_TCMALLOC:-auto}" = "auto" ]; then
+     # Test whether tcmalloc is available
+     $CXX $CXXFLAGS -x c++ - -o $CXXOUTPUT -ltcmalloc 2>/dev/null  <<EOF
+       int main() {}
+ EOF
+     if [ "$?" = 0 ]; then
++        USE_TCMALLOC="yes"
++    fi
++fi
++    if [ "$USE_TCMALLOC" = "yes" ]; then
+         PLATFORM_LIBS="$PLATFORM_LIBS -ltcmalloc"
+     fi
+ 
diff --git a/dev-libs/leveldb/files/leveldb-1.20-memenv-so.patch b/dev-libs/leveldb/files/leveldb-1.20-memenv-so.patch
new file mode 100644
index 000000000000..d443ef0ad262
--- /dev/null
+++ b/dev-libs/leveldb/files/leveldb-1.20-memenv-so.patch
@@ -0,0 +1,33 @@
+# Create libmemenv.so and don't compile programs by default
+# Add a static_programs target to compile test programs
+--- a/Makefile	2018-06-03 16:52:28.839614213 +0200
++++ b/Makefile	2018-06-03 16:52:18.209544310 +0200
+@@ -128,15 +128,27 @@
+ 	ln -fs $(SHARED_LIB3) $(SHARED_OUTDIR)/$(SHARED_LIB1)
+ $(SHARED_OUTDIR)/$(SHARED_LIB2): $(SHARED_OUTDIR)/$(SHARED_LIB3)
+ 	ln -fs $(SHARED_LIB3) $(SHARED_OUTDIR)/$(SHARED_LIB2)
++SHARED_MEMENV_LIB1 = libmemenv.$(PLATFORM_SHARED_EXT)
++SHARED_MEMENV_LIB2 = $(SHARED_MEMENV_LIB1).$(SHARED_VERSION_MAJOR)
++SHARED_MEMENV_LIB3 = $(SHARED_MEMENV_LIB1).$(SHARED_VERSION_MAJOR).$(SHARED_VERSION_MINOR)
++SHARED_MEMENV_LIBS = $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB1) $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB2) $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB3)
++$(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB1): $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB3)
++	ln -fs $(SHARED_MEMENV_LIB3) $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB1)
++$(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB2): $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB3)
++	ln -fs $(SHARED_MEMENV_LIB3) $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB2)
+ SHARED_MEMENVLIB = $(SHARED_OUTDIR)/libmemenv.a
+ endif
+ 
+ $(SHARED_OUTDIR)/$(SHARED_LIB3): $(SHARED_LIBOBJECTS)
+ 	$(CXX) $(LDFLAGS) $(PLATFORM_SHARED_LDFLAGS)$(SHARED_LIB2) $(SHARED_LIBOBJECTS) -o $(SHARED_OUTDIR)/$(SHARED_LIB3) $(LIBS)
++$(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB3): $(SHARED_MEMENVOBJECTS)
++	$(CXX) $(LDFLAGS) $(PLATFORM_SHARED_LDFLAGS)$(SHARED_MEMENV_LIB2) $(SHARED_MEMENVOBJECTS) -o $(SHARED_OUTDIR)/$(SHARED_MEMENV_LIB3) $(LIBS)
+ 
+ endif  # PLATFORM_SHARED_EXT
+ 
+-all: $(SHARED_LIBS) $(SHARED_PROGRAMS) $(STATIC_OUTDIR)/libleveldb.a $(STATIC_OUTDIR)/libmemenv.a $(STATIC_PROGRAMS)
++all: $(SHARED_LIBS) $(SHARED_MEMENV_LIBS)
++
++static_programs: $(STATIC_PROGRAMS)
+ 
+ check: $(STATIC_PROGRAMS)
+ 	for t in $(notdir $(TESTS)); do echo "***** Running $$t"; $(STATIC_OUTDIR)/$$t || exit 1; done
diff --git a/dev-libs/leveldb/leveldb-1.20.ebuild b/dev-libs/leveldb/leveldb-1.20.ebuild
new file mode 100644
index 000000000000..6961f094c8cc
--- /dev/null
+++ b/dev-libs/leveldb/leveldb-1.20.ebuild
@@ -0,0 +1,64 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit multilib toolchain-funcs
+
+DESCRIPTION="a fast key-value storage library written at Google"
+HOMEPAGE="https://github.com/google/leveldb"
+SRC_URI="https://github.com/google/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="BSD"
+# https://github.com/google/leveldb/issues/536
+SLOT="0/1"
+KEYWORDS="amd64 arm arm64 ~mips ppc ppc64 ~riscv ~sparc x86 ~amd64-linux ~x86-linux"
+IUSE="+snappy static-libs +tcmalloc test"
+RESTRICT="!test? ( test )"
+
+DEPEND="tcmalloc? ( dev-util/google-perftools )
+	snappy? (
+		app-arch/snappy:=
+	)"
+RDEPEND="${DEPEND}"
+
+# https://bugs.gentoo.org/651604
+REQUIRED_USE="snappy? ( !static-libs )"
+
+# https://github.com/google/leveldb/issues/234
+# https://github.com/google/leveldb/issues/236
+PATCHES=( "${FILESDIR}"/{${PN}-1.18-configure.patch,${P}-memenv-so.patch} )
+
+src_configure() {
+	# These vars all get picked up by build_detect_platform
+	tc-export AR CC CXX
+	export OPT="-DNDEBUG ${CPPFLAGS}"
+
+	TARGET_OS=Linux \
+	USE_SNAPPY=$(usex snappy) \
+	USE_TCMALLOC=no \
+	TMPDIR=${T} \
+	sh -x ./build_detect_platform build_config.mk ./ || die
+}
+
+src_compile() {
+	default
+	usex static-libs && emake out-static/lib{leveldb,memenv}.a
+	use test && emake static_programs
+}
+
+src_test() {
+	emake check
+}
+
+src_install() {
+	insinto /usr/include
+	doins -r include/.
+	# This matches the path Debian picked. Upstream provides no guidance.
+	insinto /usr/include/leveldb/helpers
+	doins helpers/memenv/memenv.h
+
+	dolib.so out-shared/libleveldb*$(get_libname)*
+	use static-libs && dolib.a out-static/lib{leveldb,memenv}.a
+	dolib.so out-shared/libmemenv*$(get_libname)*
+}