contrib: Add deterministic Guix builds.

1 files changed, 206 insertions, 0 deletions

diff --git a/contrib/guix/libexec/build.sh b/contrib/guix/libexec/build.sh
new file mode 100644
index 0000000000..56b972a5cb
--- /dev/null
+++ b/contrib/guix/libexec/build.sh
@@ -0,0 +1,206 @@
+#!/usr/bin/env bash
+export LC_ALL=C
+set -e -o pipefail
+
+# Check that environment variables assumed to be set by the environment are set
+echo "Building for platform triple ${HOST:?not set} with reference timestamp ${SOURCE_DATE_EPOCH:?not set}..."
+echo "At most ${MAX_JOBS:?not set} jobs will run at once..."
+
+#####################
+# Environment Setup #
+#####################
+
+# The depends folder also serves as a base-prefix for depends packages for
+# $HOSTs after successfully building.
+BASEPREFIX="${PWD}/depends"
+
+# Setup an output directory for our build
+OUTDIR="${OUTDIR:-${PWD}/output}"
+[ -e "$OUTDIR" ] || mkdir -p "$OUTDIR"
+
+# Setup the directory where our Bitcoin Core build for HOST will occur
+DISTSRC="${DISTSRC:-${PWD}/distsrc-${HOST}}"
+if [ -e "$DISTSRC" ]; then
+    echo "DISTSRC directory '${DISTSRC}' exists, probably because of previous builds... Aborting..."
+    exit 1
+else
+    mkdir -p "$DISTSRC"
+fi
+
+# Given a package name and an output name, return the path of that output in our
+# current guix environment
+store_path() {
+    grep --extended-regexp "/[^-]{32}-${1}-cross-${HOST}-[^-]+${2:+-${2}}" "${GUIX_ENVIRONMENT}/manifest" \
+        | head --lines=1 \
+        | sed --expression='s|^[[:space:]]*"||' \
+              --expression='s|"[[:space:]]*$||'
+}
+
+# Determine output paths to use in CROSS_* environment variables
+CROSS_GLIBC="$(store_path glibc)"
+CROSS_GLIBC_STATIC="$(store_path glibc static)"
+CROSS_KERNEL="$(store_path linux-libre-headers)"
+CROSS_GCC="$(store_path gcc)"
+
+# Set environment variables to point Guix's cross-toolchain to the right
+# includes/libs for $HOST
+export CROSS_C_INCLUDE_PATH="${CROSS_GCC}/include:${CROSS_GLIBC}/include:${CROSS_KERNEL}/include"
+export CROSS_CPLUS_INCLUDE_PATH="${CROSS_GCC}/include/c++:${CROSS_GLIBC}/include:${CROSS_KERNEL}/include"
+export CROSS_LIBRARY_PATH="${CROSS_GLIBC}/lib:${CROSS_GLIBC_STATIC}/lib:${CROSS_GCC}/lib:${CROSS_GCC}/${HOST}/lib:${CROSS_KERNEL}/lib"
+
+# Disable Guix ld auto-rpath behavior
+export GUIX_LD_WRAPPER_DISABLE_RPATH=yes
+
+# Make /usr/bin if it doesn't exist
+[ -e /usr/bin ] || mkdir -p /usr/bin
+
+# Symlink file and env to a conventional path
+[ -e /usr/bin/file ] || ln -s --no-dereference "$(command -v file)" /usr/bin/file
+[ -e /usr/bin/env ]  || ln -s --no-dereference "$(command -v env)"  /usr/bin/env
+
+# Determine the correct value for -Wl,--dynamic-linker for the current $HOST
+glibc_dynamic_linker=$(
+    case "$HOST" in
+        i686-linux-gnu)      echo /lib/ld-linux.so.2 ;;
+        x86_64-linux-gnu)    echo /lib64/ld-linux-x86-64.so.2 ;;
+        arm-linux-gnueabihf) echo /lib/ld-linux-armhf.so.3 ;;
+        aarch64-linux-gnu)   echo /lib/ld-linux-aarch64.so.1 ;;
+        riscv64-linux-gnu)   echo /lib/ld-linux-riscv64-lp64d.so.1 ;;
+        *)                   exit 1 ;;
+    esac
+)
+
+# Environment variables for determinism
+export QT_RCC_TEST=1
+export QT_RCC_SOURCE_DATE_OVERRIDE=1
+export TAR_OPTIONS="--owner=0 --group=0 --numeric-owner --mtime='@${SOURCE_DATE_EPOCH}' --sort=name"
+export TZ="UTC"
+
+####################
+# Depends Building #
+####################
+
+# Build the depends tree, overriding variables that assume multilib gcc
+make -C depends --jobs="$MAX_JOBS" HOST="$HOST" \
+                                   ${V:+V=1} \
+                                   ${SOURCES_PATH+SOURCES_PATH="$SOURCES_PATH"} \
+                                   i686_linux_CC=i686-linux-gnu-gcc \
+                                   i686_linux_CXX=i686-linux-gnu-g++ \
+                                   i686_linux_AR=i686-linux-gnu-ar \
+                                   i686_linux_RANLIB=i686-linux-gnu-ranlib \
+                                   i686_linux_NM=i686-linux-gnu-nm \
+                                   i686_linux_STRIP=i686-linux-gnu-strip \
+                                   x86_64_linux_CC=x86_64-linux-gnu-gcc \
+                                   x86_64_linux_CXX=x86_64-linux-gnu-g++ \
+                                   x86_64_linux_AR=x86_64-linux-gnu-ar \
+                                   x86_64_linux_RANLIB=x86_64-linux-gnu-ranlib \
+                                   x86_64_linux_NM=x86_64-linux-gnu-nm \
+                                   x86_64_linux_STRIP=x86_64-linux-gnu-strip \
+                                   qt_config_opts_i686_linux='-platform linux-g++ -xplatform bitcoin-linux-g++'
+
+
+###########################
+# Source Tarball Building #
+###########################
+
+# Create the source tarball and move it to "${OUTDIR}/src" if not already there
+if [ -z "$(find "${OUTDIR}/src" -name 'bitcoin-*.tar.gz')" ]; then
+    ./autogen.sh
+    env CONFIG_SITE="${BASEPREFIX}/${HOST}/share/config.site" ./configure --prefix=/
+    make dist GZIP_ENV='-9n' ${V:+V=1}
+    mkdir -p "${OUTDIR}/src"
+    mv "$(find "${PWD}" -name 'bitcoin-*.tar.gz')" "${OUTDIR}/src/"
+fi
+
+# Determine the full path to our source tarball
+SOURCEDIST="$(find "${OUTDIR}/src" -name 'bitcoin-*.tar.gz')"
+# Determine our distribution name (e.g. bitcoin-0.18.0)
+DISTNAME="$(basename "$SOURCEDIST" '.tar.gz')"
+
+###########################
+# Binary Tarball Building #
+###########################
+
+# Create a spec file to normalize ssp linking behaviour
+spec_file="$(mktemp)"
+cat << EOF > "$spec_file"
+*link_ssp:
+%{fstack-protector|fstack-protector-all|fstack-protector-strong|fstack-protector-explicit:}
+EOF
+
+# Similar flags to Gitian
+CONFIGFLAGS="--enable-glibc-back-compat --enable-reduce-exports --disable-bench --disable-gui-tests"
+HOST_CFLAGS="-O2 -g -specs=${spec_file} -ffile-prefix-map=${PWD}=."
+HOST_CXXFLAGS="-O2 -g -specs=${spec_file} -ffile-prefix-map=${PWD}=."
+HOST_LDFLAGS="-Wl,--as-needed -Wl,--dynamic-linker=$glibc_dynamic_linker -static-libstdc++"
+
+# Make $HOST-specific native binaries from depends available in $PATH
+export PATH="${BASEPREFIX}/${HOST}/native/bin:${PATH}"
+(
+    cd "$DISTSRC"
+
+    # Extract the source tarball
+    tar --strip-components=1 -xf "${SOURCEDIST}"
+
+    # Configure this DISTSRC for $HOST
+    # shellcheck disable=SC2086
+    env CONFIG_SITE="${BASEPREFIX}/${HOST}/share/config.site" \
+        ./configure --prefix=/ \
+                    --disable-ccache \
+                    --disable-maintainer-mode \
+                    --disable-dependency-tracking \
+                    ${CONFIGFLAGS} \
+                    CFLAGS="${HOST_CFLAGS}" \
+                    CXXFLAGS="${HOST_CXXFLAGS}" \
+                    LDFLAGS="${HOST_LDFLAGS}"
+
+    sed -i.old 's/-lstdc++ //g' config.status libtool src/univalue/config.status src/univalue/libtool
+
+    # Build Bitcoin Core
+    make --jobs="$MAX_JOBS" ${V:+V=1}
+
+    # Perform basic ELF security checks on a series of executables.
+    make -C src --jobs=1 check-security ${V:+V=1}
+    # Check that executables only contain allowed gcc, glibc and libstdc++
+    # version symbols for Linux distro back-compatibility.
+    make -C src --jobs=1 check-symbols  ${V:+V=1}
+
+    # Setup the directory where our Bitcoin Core build for HOST will be
+    # installed. This directory will also later serve as the input for our
+    # binary tarballs.
+    INSTALLPATH="${PWD}/installed/${DISTNAME}"
+    mkdir -p "${INSTALLPATH}"
+    # Install built Bitcoin Core to $INSTALLPATH
+    make install DESTDIR="${INSTALLPATH}" ${V:+V=1}
+    (
+        cd installed
+
+        # Prune libtool and object archives
+        find . -name "lib*.la" -delete
+        find . -name "lib*.a" -delete
+
+        # Prune pkg-config files
+        rm -r "${DISTNAME}/lib/pkgconfig"
+
+        # Split binaries and libraries from their debug symbols
+        {
+            find "${DISTNAME}/bin" -type f -executable -print0
+            find "${DISTNAME}/lib" -type f -print0
+        } | xargs -0 -n1 -P"$MAX_JOBS" -I{} "${DISTSRC}/contrib/devtools/split-debug.sh" {} {} {}.dbg
+
+        cp "${DISTSRC}/doc/README.md" "${DISTNAME}/"
+
+        # Finally, deterministically produce {non-,}debug binary tarballs ready
+        # for release
+        find "${DISTNAME}" -not -name "*.dbg" -print0 \
+            | sort --zero-terminated \
+            | tar --create --no-recursion --mode='u+rw,go+r-w,a+X' --null --files-from=- \
+            | gzip -9n > "${OUTDIR}/${DISTNAME}-${HOST}.tar.gz" \
+            || ( rm -f "${OUTDIR}/${DISTNAME}-${HOST}.tar.gz" && exit 1 )
+        find "${DISTNAME}" -name "*.dbg" -print0 \
+            | sort --zero-terminated \
+            | tar --create --no-recursion --mode='u+rw,go+r-w,a+X' --null --files-from=- \
+            | gzip -9n > "${OUTDIR}/${DISTNAME}-${HOST}-debug.tar.gz" \
+            || ( rm -f "${OUTDIR}/${DISTNAME}-${HOST}-debug.tar.gz" && exit 1 )
+    )
+)