grpc: add cmake support for target

The CMake gRPC config checks for binaries and fails if a binary (plugin)
is missing. Fix the problem in the code and add the CMake gRPC config
back to the target package.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/grpc/grpc/0001-cmake-add-separate-export-for-plugin-targets.patch

@@ -0,0 +1,93 @@
+From 3150cb043363e05588062dd392b940be25594713 Mon Sep 17 00:00:00 2001
+From: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
+Date: Tue, 18 Feb 2020 14:17:07 +0100
+Subject: [PATCH] cmake: add separate export for plugin targets
+
+Upstream-Status: Submitted [https://github.com/grpc/grpc/pull/29328]
+
+
+---
+ CMakeLists.txt | 18 +++++++++++-------
+ 1 file changed, 11 insertions(+), 7 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index efdaf8936d..6608b1b00c 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -10935,7 +10935,7 @@ target_link_libraries(grpc_cpp_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_cpp_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_cpp_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -10975,7 +10975,7 @@ target_link_libraries(grpc_csharp_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_csharp_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_csharp_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -11015,7 +11015,7 @@ target_link_libraries(grpc_node_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_node_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_node_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -11055,7 +11055,7 @@ target_link_libraries(grpc_objective_c_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_objective_c_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_objective_c_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -11095,7 +11095,7 @@ target_link_libraries(grpc_php_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_php_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_php_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -11135,7 +11135,7 @@ target_link_libraries(grpc_python_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_python_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_python_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -11175,7 +11175,7 @@ target_link_libraries(grpc_ruby_plugin
+ 
+ 
+ if(gRPC_INSTALL)
+-  install(TARGETS grpc_ruby_plugin EXPORT gRPCTargets
++  install(TARGETS grpc_ruby_plugin EXPORT gRPCPluginTargets
+     RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
+     BUNDLE DESTINATION  ${gRPC_INSTALL_BINDIR}
+     LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
+@@ -17349,6 +17349,10 @@ if(gRPC_INSTALL)
+     DESTINATION ${gRPC_INSTALL_CMAKEDIR}
+     NAMESPACE gRPC::
+   )
++  install(EXPORT gRPCPluginTargets
++    DESTINATION ${gRPC_INSTALL_CMAKEDIR}
++    NAMESPACE gRPC::
++  )
+ endif()
+ 
+ include(CMakePackageConfigHelpers)
+-- 
+2.30.2
+

meta-oe/recipes-devtools/grpc/grpc_1.45.1.bb

@@ -24,6 +24,7 @@ SRCREV_grpc = "1c159689ceda2c408f7f9d97d96a264c9521b806"
 BRANCH = "v1.45.x"
 SRC_URI = "git://github.com/grpc/grpc.git;protocol=https;name=grpc;branch=${BRANCH} \
            file://0001-Revert-Changed-GRPCPP_ABSEIL_SYNC-to-GPR_ABSEIL_SYNC.patch \
+           file://0001-cmake-add-separate-export-for-plugin-targets.patch \
            "
 # Fixes build with older compilers 4.8 especially on ubuntu 14.04
 CXXFLAGS:append:class-native = " -Wl,--no-as-needed"
@@ -80,8 +81,6 @@ do_configure:prepend:toolchain-clang:x86() {
 
 BBCLASSEXTEND = "native nativesdk"
 
-SYSROOT_DIRS_IGNORE:append:class-target = " ${baselib}/cmake/grpc"
-
 FILES:${PN}-compiler += " \
     ${bindir} \
     ${libdir}/libgrpc_plugin_support${SOLIBS} \