toolchain: enable lto for musl

.github/workflows/toolchain.yml

@@ -21,17 +21,20 @@ jobs:
             libmpc-dev libmpfr-dev libncurses5-dev libltdl-dev wget libc-dev-bin
       - name: Build
         run: |
-          make CT_TARGET=${{ matrix.target }}
-          cd crosstool-ng/toolchain-mipsel
-          tar cJf ../${{ matrix.target }}.tar.xz *
+          make CT_TARGET=${CT_TARGET} CT_VERSION=${CT_VERSION}
+          cd crosstool-ng-${CT_VERSION}/toolchain-mipsel
+          tar cJf ../../${CT_TARGET}.tar.xz *
+        env:
+          CT_TARGET: ${{ matrix.target }}
+          CT_VERSION: 1.26.0
         working-directory: toolchain
       - uses: actions/upload-artifact@v3
         with:
           name: toolchain
-          path: toolchain/crosstool-ng/${{ matrix.target }}.tar.xz
+          path: toolchain/${{ matrix.target }}.tar.xz
       - uses: svenstaro/upload-release-action@2.2.0
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: toolchain/crosstool-ng/${{ matrix.target }}.tar.xz
+          file: toolchain/${{ matrix.target }}.tar.xz
           tag: toolchain
           overwrite: true

.gitignore

@@ -1,2 +1,3 @@
 .vscode
+toolchain/crosstool-ng-*/
 toolchain/toolchain-*/

toolchain/Makefile

@@ -1,13 +1,21 @@
 TOPDIR        = ${CURDIR}
-CT_DIR        = $(TOPDIR)/crosstool-ng
-CT_PREFIX     = $(TOPDIR)/toolchain-mipsel
+CT_VERSION    := 1.26.0
+CT_DIR        := $(TOPDIR)/crosstool-ng-$(CT_VERSION)
+CT_PREFIX     := $(TOPDIR)/toolchain-mipsel
 CT_TARGET     := mipsel-linux-musl
+CT_URL        := https://github.com/crosstool-ng/crosstool-ng/releases/download/crosstool-ng-$(CT_VERSION)/crosstool-ng-$(CT_VERSION).tar.xz
 TOOLCHAIN_URL := https://github.com/tsl0922/padavan/releases/download/toolchain/$(CT_TARGET).tar.xz
 
 all: build
 
 build:
+	@if [ ! -d $(CT_DIR) ]; then \
+		echo "Downloading crosstool-ng..."; \
+		curl -fSsLo- $(CT_URL) | tar Jx; \
+	fi
+
 	@echo "Building toolchain..."
+	cp -r $(TOPDIR)/configs/$(CT_TARGET) $(CT_DIR)/samples
 	@(cd $(CT_DIR); \
 		./bootstrap && \
 		./configure --enable-local && \
@@ -17,11 +25,12 @@ build:
 	)
 
 clean:
-	@(cd $(CT_DIR); \
+	@if [ -d $(CT_DIR) ]; then \
+		cd $(CT_DIR); \
 		if [ -f ct-ng ]; then ./ct-ng distclean; fi; \
 		if [ -f Makefile ]; then make distclean; fi; \
-		if [ -d $(CT_PREFIX) ]; then rm -rf $(CT_PREFIX); fi \
-	)
+	fi
+	@if [ -d $(CT_PREFIX) ]; then rm -rf $(CT_PREFIX); fi
 
 download:
 	@if [ ! -d $(CT_PREFIX) ]; then \

toolchain/crosstool-ng/samples/mipsel-linux-musl/crosstool.config → toolchain/configs/mipsel-linux-musl/crosstool.config

@@ -1,5 +1,6 @@
 CT_CONFIG_VERSION="4"
 CT_EXPERIMENTAL=y
+# CT_SHOW_CT_VERSION is not set
 CT_ALLOW_BUILD_AS_ROOT=y
 CT_ALLOW_BUILD_AS_ROOT_SURE=y
 CT_PREFIX_DIR="${CT_TOP_DIR}/toolchain-mipsel"
@@ -17,7 +18,6 @@ CT_OMIT_TARGET_VENDOR=y
 CT_ARCH_LE=y
 CT_ARCH_FLOAT_HW=y
 CT_TARGET_CFLAGS="-pipe -O2 -mips32r2"
-CT_STATIC_TOOLCHAIN=y
 CT_KERNEL_LINUX=y
 CT_LINUX_SRC_CUSTOM=y
 CT_LINUX_CUSTOM_LOCATION="${CT_TOP_DIR}/../../trunk/linux-4.4.x"
@@ -29,5 +29,6 @@ CT_CC_GCC_CORE_EXTRA_CONFIG_ARRAY="--with-gnu-ld"
 CT_CC_GCC_EXTRA_CONFIG_ARRAY="--with-gnu-ld"
 CT_CC_GCC_CONFIG_TLS=y
 # CT_CC_GCC_USE_GRAPHITE is not set
+CT_CC_GCC_USE_LTO=y
 CT_CC_LANG_CXX=y
 CT_DEBUG_GDB=y