add WIP cross-x86_64

src/bootstrap/build.mk

@@ -1,10 +1,14 @@
 .PHONY: bootstrap
 bootstrap: \
-	out/bootstrap.tgz \
-	out/stage0.tgz
-
-out/bootstrap.tgz: out/stage0.tgz
-	$(call build,bootstrap,bootstrap)
+	out/live-bootstrap.tgz \
+	out/stage0.tgz \
+	out/cross-x86_64.tgz
 
 out/stage0.tgz:
 	$(call build,bootstrap,stage0)
+
+out/live-bootstrap.tgz: out/stage0.tgz
+	$(call build,bootstrap,live-bootstrap)
+
+out/cross-x86_64.tgz: out/live-bootstrap.tgz
+	$(call build,bootstrap,cross-x86_64)

src/bootstrap/cross-x86_64/Dockerfile

@@ -0,0 +1,80 @@
+ARG REGISTRY=local
+FROM ${REGISTRY}/live-bootstrap:latest as live-bootstrap
+
+FROM live-bootstrap as base
+ENV TARGET=x86_64-linux-musl
+ENV BINUTILS_VERSION 2.41
+ENV BINUTILS_SRC_SITE https://ftp.gnu.org/gnu/binutils
+ENV BINUTILS_SRC_HASH ae9a5789e23459e59606e6714723f2d3ffc31c03174191ef0d015bdf06007450
+ENV GCC_VERSION 12.2.0
+ENV GCC_SRC_FILE gcc-$GCC_VERSION.tar.xz
+ENV GCC_SRC_SITE https://mirrors.kernel.org/gnu/gcc/gcc-${GCC_VERSION}
+ENV GCC_SRC_HASH e549cf9cf3594a00e27b6589d4322d70e0720cdd213f39beb4181e06926230ff
+ENV GCC_DEP_SITE https://gcc.gnu.org/pub/gcc/infrastructure/
+ENV GMP_FILE gmp-6.2.1.tar.bz2
+ENV GMP_HASH eae9326beb4158c386e39a356818031bd28f3124cf915f8c5b1dc4c7a36b4d7c
+ENV MPFR_FILE mpfr-4.1.0.tar.bz2
+ENV MPFR_HASH feced2d430dd5a97805fa289fed3fc8ff2b094c02d05287fd6133e7f1f0ec926
+ENV MPC_FILE mpc-1.2.1.tar.gz
+ENV MPC_HASH 17503d2c395dfcf106b622dc142683c1199431d095367c6aacba6eec30340459
+ENV ISL_FILE isl-0.24.tar.bz2
+ENV ISL_HASH fcf78dd9656c10eb8cf9fbd5f59a0b6b01386205fe1934b3b287a0a1898145c0
+
+FROM base as fetch
+WORKDIR /home/user
+RUN set -eux; \
+    curl -OJ ${BINUTILS_SRC_SITE}/binutils-${BINUTILS_VERSION}.tar.xz; \
+    echo "${BINUTILS_SRC_HASH} binutils-${BINUTILS_VERSION}.tar.xz" | sha256sum -c; \
+    curl -OJ ${GCC_SRC_SITE}/${GCC_SRC_FILE}; \
+    echo "${GCC_SRC_HASH}  ${GCC_SRC_FILE}" | sha256sum -c; \
+    curl -OJ ${GCC_DEP_SITE}/${GMP_FILE}; \
+    echo "${GMP_HASH}  ${GMP_FILE}" | sha256sum -c; \
+    curl -OJ ${GCC_DEP_SITE}/${MPFR_FILE}; \
+    echo "${MPFR_HASH}  ${MPFR_FILE}" | sha256sum -c; \
+    curl -OJ ${GCC_DEP_SITE}/${MPC_FILE}; \
+    echo "${MPC_HASH}  ${MPC_FILE}" | sha256sum -c; \
+    curl -OJ ${GCC_DEP_SITE}/${ISL_FILE}; \
+    echo "${ISL_HASH}  ${ISL_FILE}" | sha256sum -c
+
+FROM fetch as build
+RUN tar -xf binutils-${BINUTILS_VERSION}.tar.xz
+RUN set -ex; \
+    cd binutils-${BINUTILS_VERSION}; \
+    ./configure \
+        --target=${TARGET} \
+        --libdir=/lib \
+        --with-sysroot= \
+        --prefix= \
+        --disable-multilib \
+        --disable-separate-code \
+        --disable-werror \
+        --enable-deterministic-archives; \
+	make -j "$(nproc)"
+#RUN tar -xf ${GCC_SRC_FILE}
+#RUN set -eux; \
+#    cd gcc-${GCC_VERSION}; \
+#    mv ../*.tar.* .; \
+#    ./contrib/download_prerequisites; \
+#    ./configure \
+#        --target=${TARGET} \
+#        --prefix=/usr \
+#        --mandir=/usr/share/man \
+#        --infodir=/usr/share/info \
+#        --libdir=/usr/lib \
+#        --disable-nls \
+#        --without-headers \
+#        --enable-languages=c,c++; \
+#make -j "$(nproc)"
+
+
+FROM build as package
+
+#FROM build as install
+#USER 0:0
+#RUN make DESTDIR="/rootfs" install;
+#RUN find /rootfs -exec touch -hcd "@0" "{}" +
+#
+#FROM scratch as package
+#COPY --from=install /rootfs /
+#ENTRYPOINT ["/bin/ld"]
+#CMD ["--version"]

src/bootstrap/live-bootstrap/Dockerfile

@@ -55,8 +55,8 @@ FROM build as install
 ENV PATH=/bin:/usr/sbin:/usr/bin
 RUN set -eux; \
     rm -rf /usr/lib/python*/__pycache__; \
-    mkdir -p /rootfs/etc /rootfs/home/user; \
-    chown -R 1000:1000 /rootfs/home/user; \
+    mkdir -p /rootfs/etc /rootfs/home/user /rootfs/tmp; \
+    chown -R 1000:1000 /rootfs/home/user /rootfs/tmp; \
     cp -R $(ls -d /etc/* | grep -v '\(resolv.conf\|hosts\)') /rootfs/etc/; \
     cp -R lib usr bin var /rootfs/; \
     echo "user:x:1000:" > /rootfs/etc/group; \