add ext-toolchain.sh, a utility for external toolchains The ext-toolchain.sh utility script implements various external toolchain tasks: * Testing of available features, like c++, soft-float or ipv6 support * Finding the libc implementation (uclibc or eglibc/glibc) * Inferring the GNU target name * Finding shared objects for packaging (libc, libpthread, ...) * Finding executables for packaging (ldd, gdbserver, ...) * Generating wrapper scripts for toolchain commands
SVN-Revision: 29765master
Jo-Philipp Wich
13 years ago
parent
49eb3fd845
commit
7a563f122f
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#!/usr/bin/env bash |
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# Script to copy a toolchain from given source to given |
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# destination directory. |
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|
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CC="" |
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CXX="" |
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CPP="" |
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|
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CFLAGS="" |
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TOOLCHAIN="." |
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|
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LIBC_TYPE="" |
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|
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|
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# Library specs |
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LIB_SPECS=" |
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c: ld-* lib{anl,c,cidn,crypt,dl,m,nsl,nss_dns,nss_files,resolv,util} |
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rt: librt-* librt |
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pthread: libpthread-* libpthread |
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cpp: libstdc++ |
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gcc: libgcc_s |
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ssp: libssp |
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gfortran: libgfortran |
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" |
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|
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# Binary specs |
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BIN_SPECS=" |
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ldd: ldd |
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ldconfig: ldconfig |
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gdb: gdb |
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gdbserver: gdbserver |
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" |
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|
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|
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test_c() { |
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cat <<-EOT | "${CC:-false}" $CFLAGS -o /dev/null -x c - 2>/dev/null |
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#include <stdio.h> |
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|
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int main(int argc, char **argv) |
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{ |
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printf("Hello, world!\n"); |
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return 0; |
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} |
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EOT |
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} |
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|
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test_cxx() { |
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cat <<-EOT | "${CXX:-false}" $CFLAGS -o /dev/null -x c++ - 2>/dev/null |
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#include <iostream> |
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|
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using namespace std; |
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|
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int main() |
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{ |
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cout << "Hello, world!" << endl; |
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return 0; |
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} |
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EOT |
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} |
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|
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test_softfloat() { |
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cat <<-EOT | "$CC" $CFLAGS -msoft-float -o /dev/null -x c - 2>/dev/null |
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int main(int argc, char **argv) |
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{ |
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double a = 0.1; |
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double b = 0.2; |
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double c = (a + b) / (a * b); |
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return 1; |
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} |
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EOT |
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} |
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|
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test_uclibc() { |
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local sysroot="$("$CC" $CFLAGS -print-sysroot 2>/dev/null)" |
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if [ -d "$sysroot" ]; then |
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local lib |
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for lib in "$sysroot"/{lib,usr/lib,usr/local/lib}/ld-uClibc*.so*; do |
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if [ -f "$lib" ] && [ ! -h "$lib" ]; then |
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return 0 |
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fi |
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done |
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fi |
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return 1 |
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} |
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|
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test_feature() { |
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local feature="$1"; shift |
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|
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# find compilers, libc type |
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probe_cc |
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probe_cxx |
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probe_libc |
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|
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# common toolchain feature tests |
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case "$feature" in |
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c) test_c; return $? ;; |
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c++) test_cxx; return $? ;; |
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soft*) test_softfloat; return $? ;; |
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esac |
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|
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# assume eglibc/glibc supports all libc features |
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if [ "$LIBC_TYPE" != "uclibc" ]; then |
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return 0 |
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fi |
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|
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# uclibc feature tests |
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local inc |
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local sysroot="$("$CC" "$@" -muclibc -print-sysroot 2>/dev/null)" |
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for inc in "include" "usr/include" "usr/local/include"; do |
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local conf="$sysroot/$inc/bits/uClibc_config.h" |
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if [ -f "$conf" ]; then |
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case "$feature" in |
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lfs) grep -q '__UCLIBC_HAS_LFS__ 1' "$conf"; return $?;; |
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ipv6) grep -q '__UCLIBC_HAS_IPV6__ 1' "$conf"; return $?;; |
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rpc) grep -q '__UCLIBC_HAS_RPC__ 1' "$conf"; return $?;; |
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locale) grep -q '__UCLIBC_HAS_LOCALE__ 1' "$conf"; return $?;; |
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wchar) grep -q '__UCLIBC_HAS_WCHAR__ 1' "$conf"; return $?;; |
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threads) grep -q '__UCLIBC_HAS_THREADS__ 1' "$conf"; return $?;; |
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esac |
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fi |
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done |
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return 1 |
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} |
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|
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|
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find_libs() { |
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local spec="$(echo "$LIB_SPECS" | sed -ne "s#^[[:space:]]*$1:##p")" |
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|
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if [ -n "$spec" ] && probe_cpp; then |
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local libdir libdirs |
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for libdir in $( |
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"$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \ |
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sed -ne 's#:# #g; s#^LIBRARY_PATH=##p' |
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); do |
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if [ -d "$libdir" ]; then |
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libdirs="$libdirs $(cd "$libdir"; pwd)/" |
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fi |
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done |
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|
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local pattern |
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for pattern in $(eval echo $spec); do |
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find $libdirs -name "$pattern.so*" | sort -u |
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done |
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return 0 |
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fi |
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return 1 |
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} |
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|
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find_bins() { |
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local spec="$(echo "$BIN_SPECS" | sed -ne "s#^[[:space:]]*$1:##p")" |
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|
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if [ -n "$spec" ] && probe_cpp; then |
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local sysroot="$("$CPP" -print-sysroot)" |
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|
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local bindir bindirs |
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for bindir in $( |
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echo "$sysroot/bin"; |
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echo "$sysroot/usr/bin"; |
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echo "$sysroot/usr/local/bin"; |
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echo "$TOOLCHAIN/bin"; |
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echo "$TOOLCHAIN/usr/bin"; |
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echo "$TOOLCHAIN/usr/local/bin"; |
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"$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \ |
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sed -ne 's#:# #g; s#^COMPILER_PATH=##p' |
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); do |
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if [ -d "$bindir" ]; then |
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bindirs="$bindirs $(cd "$bindir"; pwd)/" |
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fi |
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done |
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|
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local pattern |
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for pattern in $(eval echo $spec); do |
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find $bindirs -name "$pattern" | sort -u |
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done |
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return 0 |
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fi |
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return 1 |
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} |
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|
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wrap_bins() { |
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if probe_cc; then |
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mkdir -p "$1" || return 1 |
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local cmd |
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for cmd in "${CC%-*}-"*; do |
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if [ -x "$cmd" ]; then |
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local out="$1/${cmd##*/}" |
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echo '#!/bin/sh' > "$out" |
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case "${cmd##*/}" in |
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*-*cc|*-*cc-*|*-*++|*-*++-*|*-cpp) |
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echo -n 'exec "'"$cmd"'" '"$CFLAGS"' ' >> "$out" |
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echo -n '${STAGING_DIR:+-idirafter ' >> "$out" |
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echo -n '"$STAGING_DIR/usr/include" ' >> "$out" |
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echo -n '-L "$STAGING_DIR/usr/lib" ' >> "$out" |
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echo -n '-Wl,-rpath-link,' >> "$out" |
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echo '"$STAGING_DIR/usr/lib"} "$@"' >> "$out" |
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;; |
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*-ld) |
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echo -n 'exec "'"$cmd"'" ${STAGING_DIR:+' >> "$out" |
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echo -n '-L "$STAGING_DIR/usr/lib" ' >> "$out" |
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echo -n '-rpath-link ' >> "$out" |
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echo '"$STAGING_DIR/usr/lib"} "$@"' >> "$out" |
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;; |
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*) |
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echo "exec '$cmd' \"\$@\"" >> "$out" |
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;; |
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esac |
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chmod +x "$out" |
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fi |
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done |
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return 0 |
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fi |
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return 1 |
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} |
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probe_cc() { |
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if [ -z "$CC" ]; then |
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local bin |
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for bin in "bin" "usr/bin" "usr/local/bin"; do |
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local cmd |
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for cmd in "$TOOLCHAIN/$bin/"*-*cc*; do |
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if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then |
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CC="$(cd "${cmd%/*}"; pwd)/${cmd##*/}" |
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return 0 |
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fi |
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done |
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done |
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return 1 |
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fi |
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return 0 |
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} |
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|
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probe_cxx() { |
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if [ -z "$CXX" ]; then |
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local bin |
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for bin in "bin" "usr/bin" "usr/local/bin"; do |
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local cmd |
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for cmd in "$TOOLCHAIN/$bin/"*-*++*; do |
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if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then |
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CXX="$(cd "${cmd%/*}"; pwd)/${cmd##*/}" |
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return 0 |
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fi |
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done |
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done |
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return 1 |
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fi |
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return 0 |
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} |
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probe_cpp() { |
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if [ -z "$CPP" ]; then |
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local bin |
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for bin in "bin" "usr/bin" "usr/local/bin"; do |
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local cmd |
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for cmd in "$TOOLCHAIN/$bin/"*-cpp*; do |
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if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then |
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CPP="$(cd "${cmd%/*}"; pwd)/${cmd##*/}" |
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return 0 |
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fi |
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done |
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done |
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return 1 |
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fi |
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return 0 |
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} |
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probe_libc() { |
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if [ -z "$LIBC_TYPE" ]; then |
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if test_uclibc; then |
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LIBC_TYPE="uclibc" |
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else |
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LIBC_TYPE="glibc" |
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fi |
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fi |
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return 0 |
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} |
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|
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while [ -n "$1" ]; do |
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arg="$1"; shift |
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case "$arg" in |
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-l|--libs) |
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[ -n "$1" ] || { |
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echo "No library given, specify one of:"$(echo "$LIB_SPECS" | sed -ne 's#:.*$##p') >&1 |
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exit 1 |
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} |
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FINDLIB="$1"; shift |
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;; |
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-b|--bins) |
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[ -n "$1" ] || { |
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echo "No binary given, specify one of:"$(echo "$BIN_SPECS" | sed -ne 's#:.*$##p') >&1 |
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exit 1 |
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} |
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FINDBIN="$1"; shift |
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;; |
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|
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--toolchain) |
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[ -d "$1" ] || { |
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echo "Toolchain directory '$1' does not exist." >&2 |
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exit 1 |
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} |
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TOOLCHAIN="$(cd "$1"; pwd)"; shift |
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;; |
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--cflags) |
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CFLAGS="${CFLAGS:+$CFLAGS }$1"; shift |
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;; |
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--print-libc) |
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if probe_cc; then |
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probe_libc |
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echo "$LIBC_TYPE" |
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exit 0 |
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fi |
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echo "No C compiler found in '$TOOLCHAIN'." >&2 |
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exit 1 |
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;; |
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--print-target) |
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if probe_cc; then |
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CC="${CC##*/}" |
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echo "${CC%-*}" |
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exit 0 |
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fi |
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echo "No C compiler found in '$TOOLCHAIN'." >&2 |
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exit 1 |
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;; |
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--print-bin) |
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if [ -z "$1" ]; then |
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echo "Available programs:" >&2 |
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echo $(echo "$BIN_SPECS" | sed -ne 's#:.*$##p') >&2 |
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exit 1 |
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fi |
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find_bins "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-bin |
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exit 0 |
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;; |
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--print-libs) |
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if [ -z "$1" ]; then |
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echo "Available libraries:" >&2 |
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echo $(echo "$LIB_SPECS" | sed -ne 's#:.*$##p') >&2 |
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exit 1 |
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fi |
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find_libs "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-libs |
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exit 0 |
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;; |
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--test) |
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test_feature "$1" |
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exit $? |
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;; |
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--wrap) |
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[ -n "$1" ] || exec "$0" --help |
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wrap_bins "$1" |
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exit $? |
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;; |
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-h|--help) |
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me="$(basename "$0")" |
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echo -e "\nUsage:\n" >&2 |
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echo -e " $me --toolchain {directory} --print-libc" >&2 |
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echo -e " Print the libc implementation and exit.\n" >&2 |
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echo -e " $me --toolchain {directory} --print-target" >&2 |
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echo -e " Print the GNU target name and exit.\n" >&2 |
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echo -e " $me --toolchain {directory} --print-bin {program}" >&2 |
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echo -e " Print executables belonging to given program," >&2 |
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echo -e " omit program argument to get a list of names.\n" >&2 |
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echo -e " $me --toolchain {directory} --print-libs {library}" >&2 |
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echo -e " Print shared objects belonging to given library," >&2 |
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echo -e " omit library argument to get a list of names.\n" >&2 |
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echo -e " $me --toolchain {directory} --test {feature}" >&2 |
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echo -e " Test given feature, exit code indicates success." >&2 |
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echo -e " Possible features are 'c', 'c++', 'softfloat'," >&2 |
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echo -e " 'lfs', 'rpc', 'ipv6', 'wchar', 'locale' and " >&2 |
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echo -e " 'threads'.\n" >&2 |
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echo -e " $me --toolchain {directory} --wrap {directory}" >&2 |
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echo -e " Create wrapper scripts for C and C++ compiler, " >&2 |
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echo -e " linker, assembler and other key executables in " >&2 |
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echo -e " the directory given with --wrap.\n" >&2 |
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echo -e " $me --help" >&2 |
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echo -e " Display this help text and exit.\n\n" >&2 |
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echo -e " Most commands also take a --cflags parameter which " >&2 |
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echo -e " is used to specify C flags to be passed to the " >&2 |
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echo -e " cross compiler when performing tests." >&2 |
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echo -e " This paremter may be repeated multiple times." >&2 |
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exit 1 |
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;; |
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*) |
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echo "Unknown argument '$arg'" >&2 |
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exec $0 --help |
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;; |
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esac |
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done |
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|
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exit 0 |
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