scripts/ext-toolchain.sh

   1 #!/usr/bin/env bash
   2 #
   3 #   Script for various external toolchain tasks, refer to
   4 #   the --help output for more information.
   5 #
   6 #   Copyright (C) 2012 Jo-Philipp Wich <jow@openwrt.org>
   7 #
   8 #   This program is free software; you can redistribute it and/or modify
   9 #   it under the terms of the GNU General Public License as published by
  10 #   the Free Software Foundation; either version 2 of the License, or
  11 #   (at your option) any later version.
  12 #
  13 #   This program is distributed in the hope that it will be useful,
  14 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #   GNU General Public License for more details.
  17 #
  18 #   You should have received a copy of the GNU General Public License
  19 #   along with this program; if not, write to the Free Software
  20 #   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21
  22 CC=""
  23 CXX=""
  24 CPP=""
  25
  26 CFLAGS=""
  27 TOOLCHAIN="."
  28
  29 LIBC_TYPE=""
  30
  31
  32 # Library specs
  33 LIB_SPECS="
  34         c:        ld-* lib{anl,c,cidn,crypt,dl,m,nsl,nss_dns,nss_files,resolv,util}
  35         rt:       librt-* librt
  36         pthread:  libpthread-* libpthread
  37         cpp:      libstdc++
  38         gcc:      libgcc_s
  39         ssp:      libssp
  40         gfortran: libgfortran
  41 "
  42
  43 # Binary specs
  44 BIN_SPECS="
  45         ldd:       ldd
  46         ldconfig:  ldconfig
  47         gdb:       gdb
  48         gdbserver: gdbserver
  49 "
  50
  51
  52 test_c() {
  53         cat <<-EOT | "${CC:-false}" $CFLAGS -o /dev/null -x c - 2>/dev/null
  54                 #include <stdio.h>
  55
  56                 int main(int argc, char **argv)
  57                 {
  58                         printf("Hello, world!\n");
  59                         return 0;
  60                 }
  61         EOT
  62 }
  63
  64 test_cxx() {
  65         cat <<-EOT | "${CXX:-false}" $CFLAGS -o /dev/null -x c++ - 2>/dev/null
  66                 #include <iostream>
  67
  68                 using namespace std;
  69
  70                 int main()
  71                 {
  72                         cout << "Hello, world!" << endl;
  73                         return 0;
  74                 }
  75         EOT
  76 }
  77
  78 test_softfloat() {
  79         cat <<-EOT | "$CC" $CFLAGS -msoft-float -o /dev/null -x c - 2>/dev/null
  80                 int main(int argc, char **argv)
  81                 {
  82                         double a = 0.1;
  83                         double b = 0.2;
  84                         double c = (a + b) / (a * b);
  85                         return 1;
  86                 }
  87         EOT
  88 }
  89
  90 test_uclibc() {
  91         local sysroot="$("$CC" $CFLAGS -print-sysroot 2>/dev/null)"
  92         if [ -d "$sysroot" ]; then
  93                 local lib
  94                 for lib in "$sysroot"/{lib,usr/lib,usr/local/lib}/ld-uClibc*.so*; do
  95                         if [ -f "$lib" ] && [ ! -h "$lib" ]; then
  96                                 return 0
  97                         fi
  98                 done
  99         fi
 100         return 1
 101 }
 102
 103 test_feature() {
 104         local feature="$1"; shift
 105
 106         # find compilers, libc type
 107         probe_cc
 108         probe_cxx
 109         probe_libc
 110
 111         # common toolchain feature tests
 112         case "$feature" in
 113                 c)     test_c;         return $? ;;
 114                 c++)   test_cxx;       return $? ;;
 115                 soft*) test_softfloat; return $? ;;
 116         esac
 117
 118         # assume eglibc/glibc supports all libc features
 119         if [ "$LIBC_TYPE" != "uclibc" ]; then
 120                 return 0
 121         fi
 122
 123         # uclibc feature tests
 124         local inc
 125         local sysroot="$("$CC" "$@" -muclibc -print-sysroot 2>/dev/null)"
 126         for inc in "include" "usr/include" "usr/local/include"; do
 127                 local conf="$sysroot/$inc/bits/uClibc_config.h"
 128                 if [ -f "$conf" ]; then
 129                         case "$feature" in
 130                                 lfs)     grep -q '__UCLIBC_HAS_LFS__ 1'     "$conf"; return $?;;
 131                                 ipv6)    grep -q '__UCLIBC_HAS_IPV6__ 1'    "$conf"; return $?;;
 132                                 rpc)     grep -q '__UCLIBC_HAS_RPC__ 1'     "$conf"; return $?;;
 133                                 locale)  grep -q '__UCLIBC_HAS_LOCALE__ 1'  "$conf"; return $?;;
 134                                 wchar)   grep -q '__UCLIBC_HAS_WCHAR__ 1'   "$conf"; return $?;;
 135                                 threads) grep -q '__UCLIBC_HAS_THREADS__ 1' "$conf"; return $?;;
 136                         esac
 137                 fi
 138         done
 139
 140         return 1
 141 }
 142
 143
 144 find_libs() {
 145         local spec="$(echo "$LIB_SPECS" | sed -ne "s#^[[:space:]]*$1:##p")"
 146
 147         if [ -n "$spec" ] && probe_cpp; then
 148                 local libdir libdirs
 149                 for libdir in $(
 150                         "$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \
 151                                 sed -ne 's#:# #g; s#^LIBRARY_PATH=##p'
 152                 ); do
 153                         if [ -d "$libdir" ]; then
 154                                 libdirs="$libdirs $(cd "$libdir"; pwd)/"
 155                         fi
 156                 done
 157
 158                 local pattern
 159                 for pattern in $(eval echo $spec); do
 160                         find $libdirs -name "$pattern.so*" | sort -u
 161                 done
 162
 163                 return 0
 164         fi
 165
 166         return 1
 167 }
 168
 169 find_bins() {
 170         local spec="$(echo "$BIN_SPECS" | sed -ne "s#^[[:space:]]*$1:##p")"
 171
 172         if [ -n "$spec" ] && probe_cpp; then
 173                 local sysroot="$("$CPP" -print-sysroot)"
 174
 175                 local bindir bindirs
 176                 for bindir in $(
 177                         echo "$sysroot/bin";
 178                         echo "$sysroot/usr/bin";
 179                         echo "$sysroot/usr/local/bin";
 180                         echo "$TOOLCHAIN/bin";
 181                         echo "$TOOLCHAIN/usr/bin";
 182                         echo "$TOOLCHAIN/usr/local/bin";
 183                         "$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \
 184                                 sed -ne 's#:# #g; s#^COMPILER_PATH=##p'
 185                 ); do
 186                         if [ -d "$bindir" ]; then
 187                                 bindirs="$bindirs $(cd "$bindir"; pwd)/"
 188                         fi
 189                 done
 190
 191                 local pattern
 192                 for pattern in $(eval echo $spec); do
 193                         find $bindirs -name "$pattern" | sort -u
 194                 done
 195
 196                 return 0
 197         fi
 198
 199         return 1
 200 }
 201
 202
 203 wrap_bins() {
 204         if probe_cc; then
 205                 mkdir -p "$1" || return 1
 206
 207                 local cmd
 208                 for cmd in "${CC%-*}-"*; do
 209                         if [ -x "$cmd" ]; then
 210                                 local out="$1/${cmd##*/}"
 211
 212                                 echo '#!/bin/sh' > "$out"
 213                                 case "${cmd##*/}" in
 214                                         *-*cc|*-*cc-*|*-*++|*-*++-*|*-cpp)
 215                                                 echo -n 'exec "'"$cmd"'" '"$CFLAGS"' '         >> "$out"
 216                                                 echo -n '${STAGING_DIR:+-idirafter '           >> "$out"
 217                                                 echo -n '"$STAGING_DIR/usr/include" '          >> "$out"
 218                                                 echo -n '-L "$STAGING_DIR/usr/lib" '           >> "$out"
 219                                                 echo -n '-Wl,-rpath-link,'                     >> "$out"
 220                                                 echo    '"$STAGING_DIR/usr/lib"} "$@"'         >> "$out"
 221                                         ;;
 222                                         *-ld)
 223                                                 echo -n 'exec "'"$cmd"'" ${STAGING_DIR:+'      >> "$out"
 224                                                 echo -n '-L "$STAGING_DIR/usr/lib" '           >> "$out"
 225                                                 echo -n '-rpath-link '                         >> "$out"
 226                                                 echo    '"$STAGING_DIR/usr/lib"} "$@"'         >> "$out"
 227                                         ;;
 228                                         *)
 229                                                 echo "exec '$cmd' \"\$@\"" >> "$out"
 230                                         ;;
 231                                 esac
 232                                 chmod +x "$out"
 233                         fi
 234                 done
 235
 236                 return 0
 237         fi
 238
 239         return 1
 240 }
 241
 242
 243 probe_cc() {
 244         if [ -z "$CC" ]; then
 245                 local bin
 246                 for bin in "bin" "usr/bin" "usr/local/bin"; do
 247                         local cmd
 248                         for cmd in "$TOOLCHAIN/$bin/"*-*cc*; do
 249                                 if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then
 250                                         CC="$(cd "${cmd%/*}"; pwd)/${cmd##*/}"
 251                                         return 0
 252                                 fi
 253                         done
 254                 done
 255                 return 1
 256         fi
 257         return 0
 258 }
 259
 260 probe_cxx() {
 261         if [ -z "$CXX" ]; then
 262                 local bin
 263                 for bin in "bin" "usr/bin" "usr/local/bin"; do
 264                         local cmd
 265                         for cmd in "$TOOLCHAIN/$bin/"*-*++*; do
 266                                 if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then
 267                                         CXX="$(cd "${cmd%/*}"; pwd)/${cmd##*/}"
 268                                         return 0
 269                                 fi
 270                         done
 271                 done
 272                 return 1
 273         fi
 274         return 0
 275 }
 276
 277 probe_cpp() {
 278         if [ -z "$CPP" ]; then
 279                 local bin
 280                 for bin in "bin" "usr/bin" "usr/local/bin"; do
 281                         local cmd
 282                         for cmd in "$TOOLCHAIN/$bin/"*-cpp*; do
 283                                 if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then
 284                                         CPP="$(cd "${cmd%/*}"; pwd)/${cmd##*/}"
 285                                         return 0
 286                                 fi
 287                         done
 288                 done
 289                 return 1
 290         fi
 291         return 0
 292 }
 293
 294 probe_libc() {
 295         if [ -z "$LIBC_TYPE" ]; then
 296                 if test_uclibc; then
 297                         LIBC_TYPE="uclibc"
 298                 else
 299                         LIBC_TYPE="glibc"
 300                 fi
 301         fi
 302         return 0
 303 }
 304
 305
 306 while [ -n "$1" ]; do
 307         arg="$1"; shift
 308         case "$arg" in
 309                 --toolchain)
 310                         [ -d "$1" ] || {
 311                                 echo "Toolchain directory '$1' does not exist." >&2
 312                                 exit 1
 313                         }
 314                         TOOLCHAIN="$(cd "$1"; pwd)"; shift
 315                 ;;
 316
 317                 --cflags)
 318                         CFLAGS="${CFLAGS:+$CFLAGS }$1"; shift
 319                 ;;
 320
 321                 --print-libc)
 322                         if probe_cc; then
 323                                 probe_libc
 324                                 echo "$LIBC_TYPE"
 325                                 exit 0
 326                         fi
 327                         echo "No C compiler found in '$TOOLCHAIN'." >&2
 328                         exit 1
 329                 ;;
 330
 331                 --print-target)
 332                         if probe_cc; then
 333                                 exec "$CC" $CFLAGS -dumpmachine
 334                         fi
 335                         echo "No C compiler found in '$TOOLCHAIN'." >&2
 336                         exit 1
 337                 ;;
 338
 339                 --print-bin)
 340                         if [ -z "$1" ]; then
 341                                 echo "Available programs:"                      >&2
 342                                 echo $(echo "$BIN_SPECS" | sed -ne 's#:.*$##p') >&2
 343                                 exit 1
 344                         fi
 345
 346                         find_bins "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-bin
 347                         exit 0
 348                 ;;
 349
 350                 --print-libs)
 351                         if [ -z "$1" ]; then
 352                                 echo "Available libraries:"                     >&2
 353                                 echo $(echo "$LIB_SPECS" | sed -ne 's#:.*$##p') >&2
 354                                 exit 1
 355                         fi
 356
 357                         find_libs "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-libs
 358                         exit 0
 359                 ;;
 360
 361                 --test)
 362                         test_feature "$1"
 363                         exit $?
 364                 ;;
 365
 366                 --wrap)
 367                         [ -n "$1" ] || exec "$0" --help
 368                         wrap_bins "$1"
 369                         exit $?
 370                 ;;
 371
 372                 -h|--help)
 373                         me="$(basename "$0")"
 374                         echo -e "\nUsage:\n"                                            >&2
 375                         echo -e "  $me --toolchain {directory} --print-libc"            >&2
 376                         echo -e "    Print the libc implementation and exit.\n"         >&2
 377                         echo -e "  $me --toolchain {directory} --print-target"          >&2
 378                         echo -e "    Print the GNU target name and exit.\n"             >&2
 379                         echo -e "  $me --toolchain {directory} --print-bin {program}"   >&2
 380                         echo -e "    Print executables belonging to given program,"     >&2
 381                         echo -e "    omit program argument to get a list of names.\n"   >&2
 382                         echo -e "  $me --toolchain {directory} --print-libs {library}"  >&2
 383                         echo -e "    Print shared objects belonging to given library,"  >&2
 384                         echo -e "    omit library argument to get a list of names.\n"   >&2
 385                         echo -e "  $me --toolchain {directory} --test {feature}"        >&2
 386                         echo -e "    Test given feature, exit code indicates success."  >&2
 387                         echo -e "    Possible features are 'c', 'c++', 'softfloat',"    >&2
 388                         echo -e "    'lfs', 'rpc', 'ipv6', 'wchar', 'locale' and "      >&2
 389                         echo -e "    'threads'.\n"                                      >&2
 390                         echo -e "  $me --toolchain {directory} --wrap {directory}"      >&2
 391                         echo -e "    Create wrapper scripts for C and C++ compiler, "   >&2
 392                         echo -e "    linker, assembler and other key executables in "   >&2
 393                         echo -e "    the directory given with --wrap.\n"                >&2
 394                         echo -e "  $me --help"                                          >&2
 395                         echo -e "    Display this help text and exit.\n\n"              >&2
 396                         echo -e "  Most commands also take a --cflags parameter which " >&2
 397                         echo -e "  is used to specify C flags to be passed to the "     >&2
 398                         echo -e "  cross compiler when performing tests."               >&2
 399                         echo -e "  This paremter may be repeated multiple times."       >&2
 400                         exit 1
 401                 ;;
 402
 403                 *)
 404                         echo "Unknown argument '$arg'" >&2
 405                         exec $0 --help
 406                 ;;
 407         esac
 408 done
 409
 410 exec $0 --help