diff options
| -rwxr-xr-x | scripts/ext-toolchain.sh | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/scripts/ext-toolchain.sh b/scripts/ext-toolchain.sh new file mode 100755 index 000000000..de5d676bd --- /dev/null +++ b/scripts/ext-toolchain.sh @@ -0,0 +1,410 @@ +#!/usr/bin/env bash +# Script to copy a toolchain from given source to given +# destination directory. + +CC="" +CXX="" +CPP="" + +CFLAGS="" +TOOLCHAIN="." + +LIBC_TYPE="" + + +# Library specs +LIB_SPECS=" + c: ld-* lib{anl,c,cidn,crypt,dl,m,nsl,nss_dns,nss_files,resolv,util} + rt: librt-* librt + pthread: libpthread-* libpthread + cpp: libstdc++ + gcc: libgcc_s + ssp: libssp + gfortran: libgfortran +" + +# Binary specs +BIN_SPECS=" + ldd: ldd + ldconfig: ldconfig + gdb: gdb + gdbserver: gdbserver +" + + +test_c() { + cat <<-EOT | "${CC:-false}" $CFLAGS -o /dev/null -x c - 2>/dev/null + #include <stdio.h> + + int main(int argc, char **argv) + { + printf("Hello, world!\n"); + return 0; + } + EOT +} + +test_cxx() { + cat <<-EOT | "${CXX:-false}" $CFLAGS -o /dev/null -x c++ - 2>/dev/null + #include <iostream> + + using namespace std; + + int main() + { + cout << "Hello, world!" << endl; + return 0; + } + EOT +} + +test_softfloat() { + cat <<-EOT | "$CC" $CFLAGS -msoft-float -o /dev/null -x c - 2>/dev/null + int main(int argc, char **argv) + { + double a = 0.1; + double b = 0.2; + double c = (a + b) / (a * b); + return 1; + } + EOT +} + +test_uclibc() { + local sysroot="$("$CC" $CFLAGS -print-sysroot 2>/dev/null)" + if [ -d "$sysroot" ]; then + local lib + for lib in "$sysroot"/{lib,usr/lib,usr/local/lib}/ld-uClibc*.so*; do + if [ -f "$lib" ] && [ ! -h "$lib" ]; then + return 0 + fi + done + fi + return 1 +} + +test_feature() { + local feature="$1"; shift + + # find compilers, libc type + probe_cc + probe_cxx + probe_libc + + # common toolchain feature tests + case "$feature" in + c) test_c; return $? ;; + c++) test_cxx; return $? ;; + soft*) test_softfloat; return $? ;; + esac + + # assume eglibc/glibc supports all libc features + if [ "$LIBC_TYPE" != "uclibc" ]; then + return 0 + fi + + # uclibc feature tests + local inc + local sysroot="$("$CC" "$@" -muclibc -print-sysroot 2>/dev/null)" + for inc in "include" "usr/include" "usr/local/include"; do + local conf="$sysroot/$inc/bits/uClibc_config.h" + if [ -f "$conf" ]; then + case "$feature" in + lfs) grep -q '__UCLIBC_HAS_LFS__ 1' "$conf"; return $?;; + ipv6) grep -q '__UCLIBC_HAS_IPV6__ 1' "$conf"; return $?;; + rpc) grep -q '__UCLIBC_HAS_RPC__ 1' "$conf"; return $?;; + locale) grep -q '__UCLIBC_HAS_LOCALE__ 1' "$conf"; return $?;; + wchar) grep -q '__UCLIBC_HAS_WCHAR__ 1' "$conf"; return $?;; + threads) grep -q '__UCLIBC_HAS_THREADS__ 1' "$conf"; return $?;; + esac + fi + done + + return 1 +} + + +find_libs() { + local spec="$(echo "$LIB_SPECS" | sed -ne "s#^[[:space:]]*$1:##p")" + + if [ -n "$spec" ] && probe_cpp; then + local libdir libdirs + for libdir in $( + "$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \ + sed -ne 's#:# #g; s#^LIBRARY_PATH=##p' + ); do + if [ -d "$libdir" ]; then + libdirs="$libdirs $(cd "$libdir"; pwd)/" + fi + done + + local pattern + for pattern in $(eval echo $spec); do + find $libdirs -name "$pattern.so*" | sort -u + done + + return 0 + fi + + return 1 +} + +find_bins() { + local spec="$(echo "$BIN_SPECS" | sed -ne "s#^[[:space:]]*$1:##p")" + + if [ -n "$spec" ] && probe_cpp; then + local sysroot="$("$CPP" -print-sysroot)" + + local bindir bindirs + for bindir in $( + echo "$sysroot/bin"; + echo "$sysroot/usr/bin"; + echo "$sysroot/usr/local/bin"; + echo "$TOOLCHAIN/bin"; + echo "$TOOLCHAIN/usr/bin"; + echo "$TOOLCHAIN/usr/local/bin"; + "$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \ + sed -ne 's#:# #g; s#^COMPILER_PATH=##p' + ); do + if [ -d "$bindir" ]; then + bindirs="$bindirs $(cd "$bindir"; pwd)/" + fi + done + + local pattern + for pattern in $(eval echo $spec); do + find $bindirs -name "$pattern" | sort -u + done + + return 0 + fi + + return 1 +} + + +wrap_bins() { + if probe_cc; then + mkdir -p "$1" || return 1 + + local cmd + for cmd in "${CC%-*}-"*; do + if [ -x "$cmd" ]; then + local out="$1/${cmd##*/}" + + echo '#!/bin/sh' > "$out" + case "${cmd##*/}" in + *-*cc|*-*cc-*|*-*++|*-*++-*|*-cpp) + echo -n 'exec "'"$cmd"'" '"$CFLAGS"' ' >> "$out" + echo -n '${STAGING_DIR:+-idirafter ' >> "$out" + echo -n '"$STAGING_DIR/usr/include" ' >> "$out" + echo -n '-L "$STAGING_DIR/usr/lib" ' >> "$out" + echo -n '-Wl,-rpath-link,' >> "$out" + echo '"$STAGING_DIR/usr/lib"} "$@"' >> "$out" + ;; + *-ld) + echo -n 'exec "'"$cmd"'" ${STAGING_DIR:+' >> "$out" + echo -n '-L "$STAGING_DIR/usr/lib" ' >> "$out" + echo -n '-rpath-link ' >> "$out" + echo '"$STAGING_DIR/usr/lib"} "$@"' >> "$out" + ;; + *) + echo "exec '$cmd' \"\$@\"" >> "$out" + ;; + esac + chmod +x "$out" + fi + done + + return 0 + fi + + return 1 +} + + +probe_cc() { + if [ -z "$CC" ]; then + local bin + for bin in "bin" "usr/bin" "usr/local/bin"; do + local cmd + for cmd in "$TOOLCHAIN/$bin/"*-*cc*; do + if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then + CC="$(cd "${cmd%/*}"; pwd)/${cmd##*/}" + return 0 + fi + done + done + return 1 + fi + return 0 +} + +probe_cxx() { + if [ -z "$CXX" ]; then + local bin + for bin in "bin" "usr/bin" "usr/local/bin"; do + local cmd + for cmd in "$TOOLCHAIN/$bin/"*-*++*; do + if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then + CXX="$(cd "${cmd%/*}"; pwd)/${cmd##*/}" + return 0 + fi + done + done + return 1 + fi + return 0 +} + +probe_cpp() { + if [ -z "$CPP" ]; then + local bin + for bin in "bin" "usr/bin" "usr/local/bin"; do + local cmd + for cmd in "$TOOLCHAIN/$bin/"*-cpp*; do + if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then + CPP="$(cd "${cmd%/*}"; pwd)/${cmd##*/}" + return 0 + fi + done + done + return 1 + fi + return 0 +} + +probe_libc() { + if [ -z "$LIBC_TYPE" ]; then + if test_uclibc; then + LIBC_TYPE="uclibc" + else + LIBC_TYPE="glibc" + fi + fi + return 0 +} + + +while [ -n "$1" ]; do + arg="$1"; shift + case "$arg" in + -l|--libs) + [ -n "$1" ] || { + echo "No library given, specify one of:"$(echo "$LIB_SPECS" | sed -ne 's#:.*$##p') >&1 + exit 1 + } + FINDLIB="$1"; shift + ;; + -b|--bins) + [ -n "$1" ] || { + echo "No binary given, specify one of:"$(echo "$BIN_SPECS" | sed -ne 's#:.*$##p') >&1 + exit 1 + } + FINDBIN="$1"; shift + ;; + + --toolchain) + [ -d "$1" ] || { + echo "Toolchain directory '$1' does not exist." >&2 + exit 1 + } + TOOLCHAIN="$(cd "$1"; pwd)"; shift + ;; + + --cflags) + CFLAGS="${CFLAGS:+$CFLAGS }$1"; shift + ;; + + --print-libc) + if probe_cc; then + probe_libc + echo "$LIBC_TYPE" + exit 0 + fi + echo "No C compiler found in '$TOOLCHAIN'." >&2 + exit 1 + ;; + + --print-target) + if probe_cc; then + CC="${CC##*/}" + echo "${CC%-*}" + exit 0 + fi + echo "No C compiler found in '$TOOLCHAIN'." >&2 + exit 1 + ;; + + --print-bin) + if [ -z "$1" ]; then + echo "Available programs:" >&2 + echo $(echo "$BIN_SPECS" | sed -ne 's#:.*$##p') >&2 + exit 1 + fi + + find_bins "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-bin + exit 0 + ;; + + --print-libs) + if [ -z "$1" ]; then + echo "Available libraries:" >&2 + echo $(echo "$LIB_SPECS" | sed -ne 's#:.*$##p') >&2 + exit 1 + fi + + find_libs "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-libs + exit 0 + ;; + + --test) + test_feature "$1" + exit $? + ;; + + --wrap) + [ -n "$1" ] || exec "$0" --help + wrap_bins "$1" + exit $? + ;; + + -h|--help) + me="$(basename "$0")" + echo -e "\nUsage:\n" >&2 + echo -e " $me --toolchain {directory} --print-libc" >&2 + echo -e " Print the libc implementation and exit.\n" >&2 + echo -e " $me --toolchain {directory} --print-target" >&2 + echo -e " Print the GNU target name and exit.\n" >&2 + echo -e " $me --toolchain {directory} --print-bin {program}" >&2 + echo -e " Print executables belonging to given program," >&2 + echo -e " omit program argument to get a list of names.\n" >&2 + echo -e " $me --toolchain {directory} --print-libs {library}" >&2 + echo -e " Print shared objects belonging to given library," >&2 + echo -e " omit library argument to get a list of names.\n" >&2 + echo -e " $me --toolchain {directory} --test {feature}" >&2 + echo -e " Test given feature, exit code indicates success." >&2 + echo -e " Possible features are 'c', 'c++', 'softfloat'," >&2 + echo -e " 'lfs', 'rpc', 'ipv6', 'wchar', 'locale' and " >&2 + echo -e " 'threads'.\n" >&2 + echo -e " $me --toolchain {directory} --wrap {directory}" >&2 + echo -e " Create wrapper scripts for C and C++ compiler, " >&2 + echo -e " linker, assembler and other key executables in " >&2 + echo -e " the directory given with --wrap.\n" >&2 + echo -e " $me --help" >&2 + echo -e " Display this help text and exit.\n\n" >&2 + echo -e " Most commands also take a --cflags parameter which " >&2 + echo -e " is used to specify C flags to be passed to the " >&2 + echo -e " cross compiler when performing tests." >&2 + echo -e " This paremter may be repeated multiple times." >&2 + exit 1 + ;; + + *) + echo "Unknown argument '$arg'" >&2 + exec $0 --help + ;; + esac +done + +exit 0 |