toolchainfile.cmake.in: set linker flags

The linker flags are part of the toolchain configuration, so set them for
the CMake-based packages.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pkg-cmake.mk

@@ -177,6 +177,7 @@ $(HOST_DIR)/usr/share/buildroot/toolchainfile.cmake:
 		-e 's:@@STAGING_SUBDIR@@:$(call qstrip,$(STAGING_SUBDIR)):' \
 		-e 's:@@TARGET_CFLAGS@@:$(call qstrip,$(TARGET_CFLAGS)):' \
 		-e 's:@@TARGET_CXXFLAGS@@:$(call qstrip,$(TARGET_CXXFLAGS)):' \
+		-e 's:@@TARGET_LDFLAGS@@:$(call qstrip,$(TARGET_LDFLAGS)):' \
 		-e 's:@@TARGET_CC_NOCCACHE@@:$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_CC_NOCCACHE))):' \
 		-e 's:@@TARGET_CXX_NOCCACHE@@:$(subst $(HOST_DIR)/,,$(call qstrip,$(TARGET_CXX_NOCCACHE))):' \
 		$(TOPDIR)/support/misc/toolchainfile.cmake.in \

support/misc/toolchainfile.cmake.in

@@ -14,6 +14,7 @@ set(CMAKE_SYSTEM_NAME Linux)
 
 set(CMAKE_C_FLAGS "@@TARGET_CFLAGS@@ ${CMAKE_C_FLAGS}" CACHE STRING "Buildroot CFLAGS" FORCE)
 set(CMAKE_CXX_FLAGS "@@TARGET_CXXFLAGS@@ ${CMAKE_CXX_FLAGS}" CACHE STRING "Buildroot CXXFLAGS" FORCE)
+set(CMAKE_EXE_LINKER_FLAGS "@@TARGET_LDFLAGS@@ ${CMAKE_EXE_LINKER_FLAGS}" CACHE STRING "Buildroot LDFLAGS")
 set(CMAKE_INSTALL_SO_NO_EXE 0)
 
 set(CMAKE_PROGRAM_PATH "${RELOCATED_HOST_DIR}/usr/bin")