From 22dd6de6088e8a5e69c986a22bc7e6ccfb96028a Mon Sep 17 00:00:00 2001
From: Brian Cain <bcain@quicinc.com>
Date: Tue, 7 Nov 2023 06:54:33 -0800
Subject: [PATCH] Enable ccache for local/non-docker builds

Signed-off-by: Brian Cain <bcain@quicinc.com>
---
 Dockerfile         |  1 +
 build-toolchain.sh | 11 +++++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 020972a..0f3d75c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -77,6 +77,7 @@ ADD get-src-tarballs.sh /root/hexagon-toolchain/get-src-tarballs.sh
 ADD *.cmake /root/hexagon-toolchain/
 RUN cd /root/hexagon-toolchain && ./get-src-tarballs.sh ${PWD} ${TOOLCHAIN_INSTALL}/manifest
 
+ENV IN_CONTAINER 1
 ARG ARTIFACT_TAG=${VER}
 ADD build-toolchain.sh /root/hexagon-toolchain/build-toolchain.sh
 RUN cd /root/hexagon-toolchain && ./build-toolchain.sh ${ARTIFACT_TAG}
diff --git a/build-toolchain.sh b/build-toolchain.sh
index d40a4cd..163d61b 100755
--- a/build-toolchain.sh
+++ b/build-toolchain.sh
@@ -16,6 +16,9 @@ build_llvm_clang_cross() {
 	if [[ "${triple}" =~ "windows" ]]; then
 		EXTRA="-C windows-gnu-target.cmake"
 	fi
+	if [[ "${IN_CONTAINER-0}" -ne 1 ]]; then
+		CMAKE_CCACHE="-DLLVM_CCACHE_BUILD:BOOL=ON"
+	fi
 
 	CC="zig cc --target=${triple}" \
 	ASM="zig cc --target=${triple}" \
@@ -23,7 +26,7 @@ build_llvm_clang_cross() {
 		cmake -G Ninja \
 		-DCMAKE_BUILD_TYPE=Release \
 		-DCMAKE_INSTALL_PREFIX:PATH=${TOOLCHAIN_INSTALL}/${triple}/ \
-		-DLLVM_CCACHE_BUILD:BOOL=OFF \
+		${CMAKE_CCACHE-} \
 		-DLLVM_ENABLE_TERMINFO:BOOL=OFF \
 		-DLLVM_ENABLE_ASSERTIONS:BOOL=ON \
 		-DLLVM_HOST_TRIPLE=${triple} \
@@ -46,11 +49,15 @@ build_llvm_clang_cross() {
 
 build_llvm_clang() {
 	cd ${BASE}
+	if [[ "${IN_CONTAINER-0}" -ne 1 ]]; then
+		CMAKE_CCACHE="-DLLVM_CCACHE_BUILD:BOOL=ON"
+	fi
+
 
 	CC=clang CXX=clang++ cmake -G Ninja \
 		-DCMAKE_BUILD_TYPE=Release \
 		-DCMAKE_INSTALL_PREFIX:PATH=${TOOLCHAIN_INSTALL}/x86_64-linux-gnu/ \
-		-DLLVM_CCACHE_BUILD:BOOL=OFF \
+		${CMAKE_CCACHE-} \
 		-DLLVM_ENABLE_LLD:BOOL=ON \
 		-DLLVM_ENABLE_LIBCXX:BOOL=ON \
 		-DLLVM_ENABLE_TERMINFO:BOOL=OFF \