build: Support ccache.

Makefile

@@ -22,6 +22,11 @@ else
     DEPLOY_DIR := $(_build_name)
 endif
 
+enable_ccache := 1
+ifneq ($(enable_ccache),0)
+    CCACHE_FLAG := ENABLE_CCACHE=1
+endif
+
 ifneq ($(module),)
     ifneq ($(findstring .,$(module)),)
 		MODULE_SFX :=
@@ -65,6 +70,7 @@ help:
 	@echo "               remember to always set it!"
 	@echo "               Current build name: $(_build_name)"
 	@echo "  unstripped - Set to non-empty to avoid stripping installed library files."
+	@echo "  enable_ccache - Enabled by default, set to 0 to disable ccache."
 	@echo ""
 	@echo "Development targets:"
 	@echo "  vagrant - Start Vagrant VM"
@@ -103,28 +109,28 @@ configure: vagrant
 	@vagrant ssh -c 'if [ ! -e $(BUILD_DIR)/Makefile ]; then mkdir -p $(BUILD_DIR); (cd $(BUILD_DIR) && $(CONFIGURE_CMD)); fi && make -C $(BUILD_DIR) downloads'
 
 proton: configure
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) dist'
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) dist'
 	echo "Proton built in VM. Use 'install' or 'deploy' targets to retrieve the build."
 
 install: configure
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) STEAM_DIR=/vagrant/ install'
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) STEAM_DIR=/vagrant/ install'
 	mkdir -p $(STEAM_DIR)/compatibilitytools.d/
 	cp -Rf --no-dereference --preserve=mode,links vagrant_share/compatibilitytools.d/$(_build_name) $(STEAM_DIR)/compatibilitytools.d/
 	echo "Proton installed to your local Steam installation"
 
 redist: configure
 	mkdir -p vagrant_share/$(DEPLOY_DIR)
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) redist && cp $(BUILD_DIR)/redist/* /vagrant/$(DEPLOY_DIR)'
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) redist && cp $(BUILD_DIR)/redist/* /vagrant/$(DEPLOY_DIR)'
 	echo "Proton build available at vagrant_share/$(DEPLOY_DIR)"
 
 deploy: configure
 	mkdir -p vagrant_share/$(DEPLOY_DIR)-deploy
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) deploy && cp $(BUILD_DIR)/deploy/* /vagrant/$(DEPLOY_DIR)-deploy'
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) deploy && cp $(BUILD_DIR)/deploy/* /vagrant/$(DEPLOY_DIR)-deploy'
 	echo "Proton deployed to vagrant_share/$(DEPLOY_DIR)-deploy"
 
 module: configure
 	mkdir -p vagrant_share/$(module)/lib/wine/ vagrant_share/$(module)/lib64/wine/
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) module=$(module) module && \
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) module=$(module) module && \
 		cp -f $(BUILD_DIR)/obj-wine32/dlls/$(module)/$(module)$(MODULE_SFX)* /vagrant/$(module)/lib/wine/ && \
 		cp -f $(BUILD_DIR)/obj-wine64/dlls/$(module)/$(module)$(MODULE_SFX)* /vagrant/$(module)/lib64/wine/ && \
 		if [ -e $(BUILD_DIR)/obj-wine64/dlls/$(module)/$(module).so ]; then \
@@ -136,34 +142,34 @@ module: configure
 dxvk: configure
 	mkdir -p vagrant_share/dxvk/lib/wine/dxvk/
 	mkdir -p vagrant_share/dxvk/lib64/wine/dxvk/
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) dxvk && \
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) dxvk && \
 		cp -f $(BUILD_DIR)/dist/dist/lib/wine/dxvk/*.dll /vagrant/dxvk/lib/wine/dxvk/ && \
 		cp -f $(BUILD_DIR)/dist/dist/lib64/wine/dxvk/*.dll /vagrant/dxvk/lib64/wine/dxvk/'
 
 d9vk: configure
 	mkdir -p vagrant_share/d9vk/lib/wine/dxvk/
 	mkdir -p vagrant_share/d9vk/lib64/wine/dxvk/
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) d9vk && \
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) d9vk && \
 		cp -f $(BUILD_DIR)/dist/dist/lib/wine/dxvk/*.dll /vagrant/d9vk/lib/wine/dxvk/ && \
 		cp -f $(BUILD_DIR)/dist/dist/lib64/wine/dxvk/*.dll /vagrant/d9vk/lib64/wine/dxvk/'
 
 vkd3d-proton: configure
 	mkdir -p vagrant_share/vkd3d-proton/lib/wine/vkd3d-proton/
 	mkdir -p vagrant_share/vkd3d-proton/lib64/wine/vkd3d-proton/
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) vkd3d-proton && \
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) vkd3d-proton && \
 		cp -f $(BUILD_DIR)/dist/dist/lib/wine/vkd3d-proton/*.dll /vagrant/vkd3d-proton/lib/wine/vkd3d-proton/ && \
 		cp -f $(BUILD_DIR)/dist/dist/lib64/wine/vkd3d-proton/*.dll /vagrant/vkd3d-proton/lib64/wine/vkd3d-proton/'
 
 lsteamclient: configure
 	mkdir -p vagrant_share/lsteamclient/lib/wine
 	mkdir -p vagrant_share/lsteamclient/lib64/wine
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) lsteamclient && \
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) lsteamclient && \
 		cp -f $(BUILD_DIR)/dist/dist/lib/wine/lsteamclient.dll.so /vagrant/lsteamclient/lib/wine && \
 		cp -f $(BUILD_DIR)/dist/dist/lib64/wine/lsteamclient.dll.so /vagrant/lsteamclient/lib64/wine'
 
 vrclient: configure
 	mkdir -p vagrant_share/vrclient/lib/wine
 	mkdir -p vagrant_share/vrclient/lib64/wine
-	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) vrclient && \
+	vagrant ssh -c 'make -C $(BUILD_DIR)/ $(UNSTRIPPED) $(CCACHE_FLAG) vrclient && \
 		cp -f $(BUILD_DIR)/dist/dist/lib/wine/vrclient.dll.so /vagrant/vrclient/lib/wine && \
 		cp -f $(BUILD_DIR)/dist/dist/lib64/wine/vrclient_x64.dll.so /vagrant/vrclient/lib64/wine'

Vagrantfile

@@ -76,7 +76,7 @@ Vagrant.configure(2) do |config|
 
       #install host build-time dependencies
       apt-get update
-      apt-get install -y texinfo gpgv2 gnupg2 git docker-ce docker-ce-cli containerd.io \
+      apt-get install -y ccache texinfo gpgv2 gnupg2 git docker-ce docker-ce-cli containerd.io \
           fontforge-nox python-debian python-pip meson libmpc-dev libmpc-dev:i386 \
           gcc g++ gcc-i686-linux-gnu g++-i686-linux-gnu binutils-i686-linux-gnu \
           gcc-mingw-w64-i686 gcc-mingw-w64-x86-64 \
@@ -106,6 +106,12 @@ Vagrant.configure(2) do |config|
 
       #ensure we use only the mingw-w64 that we built
       apt-get remove -y '*mingw-w64*'
+
+      #setup ccache
+      ln -s $(which ccache) /usr/lib/ccache/x86_64-w64-mingw32-gcc
+      ln -s $(which ccache) /usr/lib/ccache/x86_64-w64-mingw32-g++
+      ln -s $(which ccache) /usr/lib/ccache/i686-w64-mingw32-gcc
+      ln -s $(which ccache) /usr/lib/ccache/i686-w64-mingw32-g++
     SHELL
   end
 end

build/makefile_base.mak

@@ -38,17 +38,22 @@ endif
 
 # If CC is coming from make's defaults or nowhere, use our own default.  Otherwise respect environment.
 ifneq ($(filter default undefined,$(origin CC)),)
-#	CC = ccache gcc
 	CC = gcc
 endif
 ifneq ($(filter default undefined,$(origin CXX)),)
-#	CXX = ccache g++
 	CXX = g++
 endif
 
 export CC
 export CXX
 
+ifeq ($(ENABLE_CCACHE),1)
+	export PATH := /usr/lib/ccache:$(PATH)
+else
+	export CCACHE_DISABLE = 1
+	DOCKER_CCACHE_FLAG = -e CCACHE_DISABLE=1
+endif
+
 CC32 := gcc -m32 -mstackrealign
 CXX32 := g++ -m32 -mstackrealign
 PKG_CONFIG32 := i686-linux-gnu-pkg-config
@@ -61,7 +66,7 @@ cc-option = $(shell if test -z "`echo 'void*p=1;' | \
 DOCKER_SHELL_BASE = docker run --rm --init --privileged --cap-add=SYS_ADMIN --security-opt apparmor:unconfined \
                                     -v $(HOME):$(HOME) -v /tmp:/tmp \
                                     -v /etc/passwd:/etc/passwd:ro -v /etc/group:/etc/group:ro  -v /etc/shadow:/etc/shadow:ro \
-                                    -w $(CURDIR) -e HOME=$(HOME) -e PATH=$(PATH) -u $(shell id -u):$(shell id -g) -h $(shell hostname) \
+                                    -w $(CURDIR) -e HOME=$(HOME) -e PATH=$(PATH) $(DOCKER_CCACHE_FLAG) -u $(shell id -u):$(shell id -g) -h $(shell hostname) \
                                     $(DOCKER_OPTS) \
                                     $(SELECT_DOCKER_IMAGE) /sbin/docker-init -sg -- /bin/bash