fix: build a fully static toolchain using musl-dev

before, the dynamic musl-libc in alpine was linked.

Author: jaromil

GNUmakefile

@@ -16,7 +16,7 @@ libs: dyne/$(ARCH)/lib/libssl.a
 prepare:
 	sh prepare.sh $(ARCH)
 
-/alpine/enter-chroot: APKS := bash make cmake gcc build-base curl patch gawk ccache perl rsync xz samurai coreutils-fmt
+/alpine/enter-chroot: APKS := bash make cmake gcc build-base musl-dev curl patch gawk ccache perl rsync xz samurai coreutils-fmt
 /alpine/enter-chroot:
 	$(info 💪 Alpine chroot packages: $(APKS))
 	./alpine-chroot-install -a x86_64 -d /alpine -p "$(APKS)"

docs/readme.md

@@ -81,6 +81,16 @@ musl-cross-make's patch set provides:
 - Support for J2 Core CPU target in GCC & binutils
 - SH/FDPIC ABI support
 
+## Build it yourself
+
+In order to build a static toolchain, we use Alpine in a chroot with bind-mount of current dir and therefore require super-user privileges.
+
+The sequence of commands to build is:
+1. `sudo make chroot`
+2. `/alpine/enter-chroot make gcc`
+3. `/alpine/enter-chroot make libs`
+
+Assuming you are building in `/home/user/devel/musl` then the built toolchain will be found in `/opt/alpine/home/user/devel/musl/dyne`.
 
 ## License
 

gcc-musl/config.static-small.mak

@@ -10,8 +10,8 @@ COMMON_CONFIG += CFLAGS="-g0 -Os -march=x86-64-v2"
 COMMON_CONFIG += CXXFLAGS="-g0 -Os -march=x86-64-v2"
 # -march=x86-64-v2 -march=haswell
 COMMON_CONFIG += LDFLAGS="-s"
-COMMON_CONFIG += CC="ccache gcc -static"
-COMMON_CONFIG += CXX="ccache g++ -static"
+COMMON_CONFIG += CC="ccache gcc -static --static"
+COMMON_CONFIG += CXX="ccache g++ -static --static"
 COMMON_CONFIG += --disable-nls --disable-libmudflap --disable-libsanitizer --disable-lto
 # --disable-libquadmath --disable-decimal-float --disable-libitm
 # --disable-fixed-point --disable-lto

libs/GNUmakefile

@@ -15,8 +15,8 @@ R  := $(shell dirname $(CURDIR))
 T  := $(R)/dyne/$(ARCH)
 
 GCC_BINS := $(R)/dyne/gcc-musl/bin/$(ARCH)
-CC  := ccache $(GCC_BINS)-gcc
-CXX := ccache $(GCC_BINS)-g++
+CC  := ccache $(GCC_BINS)-gcc --static
+CXX := ccache $(GCC_BINS)-g++ --static
 ASM := $(GCC_BINS)-as
 AR := $(GCC_BINS)-ar