[PATCH 19.07 2/6] cmake.mk, rules.mk: fix host builds using CMake and ccache

[Petr Štetiar]

Commit f98878e4c17d ("cmake.mk: set C/CXX compiler for host builds as
well") has introduced regression as it didn't taken usage of ccache into
the account so fix it by handling ccache use cases as well.

In order to get this working we need to export HOSTCXX_NOCACHE in
rules.mk as well.

Fixes: f98878e4c17d ("cmake.mk: set C/CXX compiler for host builds as well")
Reported-by: Ansuel Smith <ansuelsmth at gmail.com>
Tested-by: Ansuel Smith <ansuelsmth at gmail.com>
Signed-off-by: Petr Štetiar <ynezz at true.cz>
(cherry picked from commit 524fb5646eec6147aadfdd508219f39bcf8ba8fc)
---
 include/cmake.mk | 18 ++++++++++++++++--
 rules.mk         |  1 +
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/include/cmake.mk b/include/cmake.mk
index 1f764ab95593..8989b4744fe0 100644
--- a/include/cmake.mk
+++ b/include/cmake.mk
@@ -22,12 +22,22 @@ ifeq ($(CONFIG_CCACHE),)
  CMAKE_CXX_COMPILER:=$(call cmake_tool,$(TARGET_CXX))
  CMAKE_C_COMPILER_ARG1:=
  CMAKE_CXX_COMPILER_ARG1:=
+
+ CMAKE_HOST_C_COMPILER:=$(HOSTCC)
+ CMAKE_HOST_CXX_COMPILER:=$(HOSTCXX)
+ CMAKE_HOST_C_COMPILER_ARG1:=
+ CMAKE_HOST_CXX_COMPILER_ARG1:=
 else
   CCACHE:=$(STAGING_DIR_HOST)/bin/ccache
   CMAKE_C_COMPILER:=$(CCACHE)
   CMAKE_C_COMPILER_ARG1:=$(TARGET_CC_NOCACHE)
   CMAKE_CXX_COMPILER:=$(CCACHE)
   CMAKE_CXX_COMPILER_ARG1:=$(TARGET_CXX_NOCACHE)
+
+  CMAKE_HOST_C_COMPILER:=$(CCACHE)
+  CMAKE_HOST_C_COMPILER_ARG1:=$(HOSTCC_NOCACHE)
+  CMAKE_HOST_CXX_COMPILER:=$(CCACHE)
+  CMAKE_HOST_CXX_COMPILER_ARG1:=$(HOSTCXX_NOCACHE)
 endif
 CMAKE_AR:=$(call cmake_tool,$(TARGET_AR))
 CMAKE_NM:=$(call cmake_tool,$(TARGET_NM))
@@ -90,8 +100,12 @@ define Host/Configure/Default
 		LDFLAGS="$(HOST_LDFLAGS)" \
 		cmake \
 			-DCMAKE_BUILD_TYPE=Release \
-			-DCMAKE_C_COMPILER="$(HOSTCC)" \
-			-DCMAKE_CXX_COMPILER="$(HOSTCXX)" \
+			-DCMAKE_C_COMPILER="$(CMAKE_HOST_C_COMPILER)" \
+			-DCMAKE_C_COMPILER_ARG1="$(CMAKE_HOST_C_COMPILER_ARG1)" \
+			-DCMAKE_CXX_COMPILER="$(CMAKE_HOST_CXX_COMPILER)" \
+			-DCMAKE_CXX_COMPILER_ARG1="$(CMAKE_HOST_CXX_COMPILER_ARG1)" \
+			-DCMAKE_ASM_COMPILER="$(CMAKE_HOST_C_COMPILER)" \
+			-DCMAKE_ASM_COMPILER_ARG1="$(CMAKE_HOST_C_COMPILER_ARG1)" \
 			-DCMAKE_C_FLAGS_RELEASE="-DNDEBUG" \
 			-DCMAKE_CXX_FLAGS_RELEASE="-DNDEBUG" \
 			-DCMAKE_EXE_LINKER_FLAGS:STRING="$(HOST_LDFLAGS)" \
diff --git a/rules.mk b/rules.mk
index 80cb3d63f449..41ed9bafd01b 100644
--- a/rules.mk
+++ b/rules.mk
@@ -291,6 +291,7 @@ HOSTCXX_NOCACHE:=$(HOSTCXX)
 export TARGET_CC_NOCACHE
 export TARGET_CXX_NOCACHE
 export HOSTCC_NOCACHE
+export HOSTCXX_NOCACHE
 
 ifneq ($(CONFIG_CCACHE),)
   TARGET_CC:= ccache_cc