libgrpc: add package (#1122)

packages/libgrpc/CMakeLists.txt.diff

@@ -0,0 +1,11 @@
+--- ./CMakeLists.txt	2017-07-09 09:11:13.314844730 +0530
++++ ../CMakeLists.txt	2017-07-09 09:14:19.309615851 +0530
+@@ -322,7 +322,7 @@
+       COMMAND ${_gRPC_PROTOBUF_PROTOC}
+       ARGS --grpc_out=generate_mock_code=true:${_gRPC_PROTO_GENS_DIR}
+            --cpp_out=${_gRPC_PROTO_GENS_DIR}
+-           --plugin=protoc-gen-grpc=$<TARGET_FILE:grpc_cpp_plugin>
++           --plugin=protoc-gen-grpc=@PATH_TO_PLUGIN@
+            ${_protobuf_include_path}
+            ${REL_FIL}
+       DEPENDS ${ABS_FIL} ${_gRPC_PROTOBUF_PROTOC} grpc_cpp_plugin

packages/libgrpc/CMakeLists.txt.patch

@@ -0,0 +1,20 @@
+--- ./CMakeLists.txt	2017-06-28 01:16:01.000000000 +0530
++++ ../CMakeLists.txt	2017-07-08 22:10:35.062570096 +0530
+@@ -272,7 +272,7 @@
+ if(_gRPC_PLATFORM_MAC)
+   set(_gRPC_ALLTARGETS_LIBRARIES ${CMAKE_DL_LIBS} m pthread)
+ elseif(UNIX)
+-  set(_gRPC_ALLTARGETS_LIBRARIES ${CMAKE_DL_LIBS} rt m pthread)
++  set(_gRPC_ALLTARGETS_LIBRARIES ${CMAKE_DL_LIBS} m)
+ endif()
+ 
+ if(WIN32 AND MSVC)
+@@ -305,7 +305,7 @@
+     return()
+   endif()
+
+-  set(_protobuf_include_path -I . -I ${PROTOBUF_WELLKNOWN_IMPORT_DIR})
++  set(_protobuf_include_path -I . -I @TERMUX_PREFIX@/include)
+   foreach(FIL ${ARGN})
+     get_filename_component(ABS_FIL ${FIL} ABSOLUTE)
+     get_filename_component(FIL_WE ${FIL} NAME_WE)

packages/libgrpc/build.sh

@@ -0,0 +1,30 @@
+TERMUX_PKG_VERSION=1.4.1
+TERMUX_PKG_DESCRIPTION="High performance, open source, general RPC framework that puts mobile and HTTP/2 first"
+TERMUX_PKG_MAINTAINER="Vishal Biswas @vishalbiswas"
+TERMUX_PKG_SRCURL=https://github.com/grpc/grpc/archive/v$TERMUX_PKG_VERSION.tar.gz
+TERMUX_PKG_DEPENDS="openssl, protobuf, c-ares"
+TERMUX_PKG_SHA256=60840ef0e9b71f47cb73d4e220089b3d1e78dbfa011ae128f7688622f287b543
+TERMUX_PKG_FOLDERNAME=grpc-$TERMUX_PKG_VERSION
+TERMUX_PKG_HOSTBUILD=true
+TERMUX_PKG_KEEP_STATIC_LIBRARIES=true
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+-DgRPC_CARES_PROVIDER=package
+-DgRPC_PROTOBUF_PROVIDER=package
+-DgRPC_SSL_PROVIDER=package
+-DgRPC_ZLIB_PROVIDER=package
+-D_gRPC_PROTOBUF_PROTOC=$TERMUX_TOPDIR/libprotobuf/host-build/src/protoc
+"
+
+termux_step_host_build () {
+	cmake $TERMUX_PKG_SRCDIR -G "Unix Makefiles" \
+		$TERMUX_PKG_EXTRA_CONFIGURE_ARGS \
+		-DCMAKE_CXX_FLAGS="-Wl,-L$TERMUX_TOPDIR/libprotobuf/host-build/src/.libs -Wl,-lprotobuf -Wl,-lprotoc"
+	make -j $TERMUX_MAKE_PROCESSES grpc_cpp_plugin
+}
+
+termux_step_pre_configure () {
+	sed "s|@PATH_TO_PLUGIN@|$TERMUX_PKG_HOSTBUILD_DIR/grpc_cpp_plugin|g" $TERMUX_PKG_BUILDER_DIR/CMakeLists.txt.diff | patch -p1
+
+	export GRPC_CROSS_COMPILE=true
+	LDFLAGS="$LDFLAGS -lprotobuf -lprotoc -lcares -llog -lz"
+}

packages/libgrpc/include-grpcpp-impl-codegen-config.h.patch

@@ -0,0 +1,11 @@
+--- ./include/grpc++/impl/codegen/config.h	2017-06-28 01:16:01.000000000 +0530
++++ ../config.h	2017-07-08 22:48:38.993186926 +0530
+@@ -49,8 +49,6 @@
+ 
+ typedef GRPC_CUSTOM_STRING string;
+ 
+-using std::to_string;
+-
+ }  // namespace grpc
+ 
+ #endif  // GRPCXX_IMPL_CODEGEN_CONFIG_H