From 7a563f122fd80c56d4c2ef645493a33dec10baa3 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Wed, 18 Jan 2012 03:03:24 +0000
Subject: [PATCH] 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: 29765
---
scripts/ext-toolchain.sh | 410 +++++++++++++++++++++++++++++++++++++++
1 file changed, 410 insertions(+)
create mode 100755 scripts/ext-toolchain.sh
diff --git a/scripts/ext-toolchain.sh b/scripts/ext-toolchain.sh
new file mode 100755
index 0000000000..de5d676bd5
--- /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
--
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