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 <jo@mein.io>
   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         stdcpp:   libstdc++
  38         thread_db: libthread-db
  39         gcc:      libgcc_s
  40         ssp:      libssp
  41         gfortran: libgfortran
  42         gomp:     libgomp
  43 "
  44
  45 # Binary specs
  46 BIN_SPECS="
  47         ldd:       ldd
  48         ldconfig:  ldconfig
  49         gdb:       gdb
  50         gdbserver: gdbserver
  51 "
  52
  53
  54 test_c() {
  55         cat <<-EOT | "${CC:-false}" $CFLAGS -o /dev/null -x c - 2>/dev/null
  56                 #include <stdio.h>
  57
  58                 int main(int argc, char **argv)
  59                 {
  60                         printf("Hello, world!\n");
  61                         return 0;
  62                 }
  63         EOT
  64 }
  65
  66 test_cxx() {
  67         cat <<-EOT | "${CXX:-false}" $CFLAGS -o /dev/null -x c++ - 2>/dev/null
  68                 #include <iostream>
  69
  70                 using namespace std;
  71
  72                 int main()
  73                 {
  74                         cout << "Hello, world!" << endl;
  75                         return 0;
  76                 }
  77         EOT
  78 }
  79
  80 test_softfloat() {
  81         cat <<-EOT | "$CC" $CFLAGS -msoft-float -o /dev/null -x c - 2>/dev/null
  82                 int main(int argc, char **argv)
  83                 {
  84                         double a = 0.1;
  85                         double b = 0.2;
  86                         double c = (a + b) / (a * b);
  87                         return 1;
  88                 }
  89         EOT
  90 }
  91
  92 test_uclibc() {
  93         local sysroot="$("$CC" $CFLAGS -print-sysroot 2>/dev/null)"
  94         if [ -d "${sysroot:-$TOOLCHAIN}" ]; then
  95                 local lib
  96                 for lib in "${sysroot:-$TOOLCHAIN}"/{lib,usr/lib,usr/local/lib}/ld*-uClibc*.so*; do
  97                         if [ -f "$lib" ] && [ ! -h "$lib" ]; then
  98                                 return 0
  99                         fi
 100                 done
 101         fi
 102         return 1
 103 }
 104
 105 test_feature() {
 106         local feature="$1"; shift
 107
 108         # find compilers, libc type
 109         probe_cc
 110         probe_cxx
 111         probe_libc
 112
 113         # common toolchain feature tests
 114         case "$feature" in
 115                 c)     test_c;         return $? ;;
 116                 c++)   test_cxx;       return $? ;;
 117                 soft*) test_softfloat; return $? ;;
 118         esac
 119
 120         # assume eglibc/glibc supports all libc features
 121         if [ "$LIBC_TYPE" != "uclibc" ]; then
 122                 return 0
 123         fi
 124
 125         # uclibc feature tests
 126         local inc
 127         local sysroot="$("$CC" "$@" -muclibc -print-sysroot 2>/dev/null)"
 128         for inc in "include" "usr/include" "usr/local/include"; do
 129                 local conf="${sysroot:-$TOOLCHAIN}/$inc/bits/uClibc_config.h"
 130                 if [ -f "$conf" ]; then
 131                         case "$feature" in
 132                                 lfs)     grep -q '__UCLIBC_HAS_LFS__ 1'     "$conf"; return $?;;
 133                                 ipv6)    grep -q '__UCLIBC_HAS_IPV6__ 1'    "$conf"; return $?;;
 134                                 rpc)     grep -q '__UCLIBC_HAS_RPC__ 1'     "$conf"; return $?;;
 135                                 locale)  grep -q '__UCLIBC_HAS_LOCALE__ 1'  "$conf"; return $?;;
 136                                 wchar)   grep -q '__UCLIBC_HAS_WCHAR__ 1'   "$conf"; return $?;;
 137                                 threads) grep -q '__UCLIBC_HAS_THREADS__ 1' "$conf"; return $?;;
 138                         esac
 139                 fi
 140         done
 141
 142         return 1
 143 }
 144
 145
 146 find_libs() {
 147         local spec="$(echo "$LIB_SPECS" | sed -ne "s#^[[:space:]]*$1:##ip")"
 148
 149         if [ -n "$spec" ] && probe_cpp; then
 150                 local libdir libdirs
 151                 for libdir in $(
 152                         "$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \
 153                                 sed -ne 's#:# #g; s#^LIBRARY_PATH=##p'
 154                 ); do
 155                         if [ -d "$libdir" ]; then
 156                                 libdirs="$libdirs $(cd "$libdir"; pwd)/"
 157                         fi
 158                 done
 159
 160                 local pattern
 161                 for pattern in $(eval echo $spec); do
 162                         find $libdirs -name "$pattern.so*" | sort -u
 163                 done
 164
 165                 return 0
 166         fi
 167
 168         return 1
 169 }
 170
 171 find_bins() {
 172         local spec="$(echo "$BIN_SPECS" | sed -ne "s#^[[:space:]]*$1:##ip")"
 173
 174         if [ -n "$spec" ] && probe_cpp; then
 175                 local sysroot="$("$CPP" -print-sysroot)"
 176
 177                 local bindir bindirs
 178                 for bindir in $(
 179                         echo "${sysroot:-$TOOLCHAIN}/bin";
 180                         echo "${sysroot:-$TOOLCHAIN}/usr/bin";
 181                         echo "${sysroot:-$TOOLCHAIN}/usr/local/bin";
 182                         "$CPP" $CFLAGS -v -x c /dev/null 2>&1 | \
 183                                 sed -ne 's#:# #g; s#^COMPILER_PATH=##p'
 184                 ); do
 185                         if [ -d "$bindir" ]; then
 186                                 bindirs="$bindirs $(cd "$bindir"; pwd)/"
 187                         fi
 188                 done
 189
 190                 local pattern
 191                 for pattern in $(eval echo $spec); do
 192                         find $bindirs -name "$pattern" | sort -u
 193                 done
 194
 195                 return 0
 196         fi
 197
 198         return 1
 199 }
 200
 201
 202 wrap_bin_cc() {
 203         local out="$1"
 204         local bin="$2"
 205
 206         echo    '#!/bin/sh'                                                > "$out"
 207         echo    'for arg in "$@"; do'                                     >> "$out"
 208         echo    ' case "$arg" in -l*|-L*|-shared|-static)'                >> "$out"
 209         echo -n '  exec "'"$bin"'" '"$CFLAGS"' ${STAGING_DIR:+'           >> "$out"
 210         echo -n '-idirafter "$STAGING_DIR/usr/include" '                  >> "$out"
 211         echo -n '-L "$STAGING_DIR/usr/lib" '                              >> "$out"
 212         echo    '-Wl,-rpath-link,"$STAGING_DIR/usr/lib"} "$@" ;;'         >> "$out"
 213         echo    ' esac'                                                   >> "$out"
 214         echo    'done'                                                    >> "$out"
 215         echo -n 'exec "'"$bin"'" '"$CFLAGS"' ${STAGING_DIR:+'             >> "$out"
 216         echo    '-idirafter "$STAGING_DIR/usr/include"} "$@"'             >> "$out"
 217
 218         chmod +x "$out"
 219 }
 220
 221 wrap_bin_ld() {
 222         local out="$1"
 223         local bin="$2"
 224
 225         echo    '#!/bin/sh'                                                > "$out"
 226         echo -n 'exec "'"$bin"'" ${STAGING_DIR:+'                         >> "$out"
 227         echo -n '-L "$STAGING_DIR/usr/lib" '                              >> "$out"
 228         echo    '-rpath-link "$STAGING_DIR/usr/lib"} "$@"'                >> "$out"
 229
 230         chmod +x "$out"
 231 }
 232
 233 wrap_bin_other() {
 234         local out="$1"
 235         local bin="$2"
 236
 237         echo    '#!/bin/sh'                                                > "$out"
 238         echo    'exec "'"$bin"'" "$@"'                                    >> "$out"
 239
 240         chmod +x "$out"
 241 }
 242
 243 wrap_bins() {
 244         if probe_cc; then
 245                 mkdir -p "$1" || return 1
 246
 247                 local cmd
 248                 for cmd in "${CC%-*}-"*; do
 249                         if [ -x "$cmd" ]; then
 250                                 local out="$1/${cmd##*/}"
 251                                 local bin="$cmd"
 252
 253                                 if [ -x "$out" ] && ! grep -q STAGING_DIR "$out"; then
 254                                         mv "$out" "$out.bin"
 255                                         bin='$(dirname "$0")/'"${out##*/}"'.bin'
 256                                 fi
 257
 258                                 case "${cmd##*/}" in
 259                                         *-*cc|*-*cc-*|*-*++|*-*++-*|*-cpp)
 260                                                 wrap_bin_cc "$out" "$bin"
 261                                         ;;
 262                                         *-ld)
 263                                                 wrap_bin_ld "$out" "$bin"
 264                                         ;;
 265                                         *)
 266                                                 wrap_bin_other "$out" "$bin"
 267                                         ;;
 268                                 esac
 269                         fi
 270                 done
 271
 272                 return 0
 273         fi
 274
 275         return 1
 276 }
 277
 278
 279 print_config() {
 280         local mktarget="$1"
 281         local mksubtarget
 282
 283         local target="$("$CC" $CFLAGS -dumpmachine)"
 284         local cpuarch="${target%%-*}"
 285         local prefix="${CC##*/}"; prefix="${prefix%-*}-"
 286         local config="${0%/scripts/*}/.config"
 287
 288         # if no target specified, print choice list and exit
 289         if [ -z "$mktarget" ]; then
 290                 # prepare metadata
 291                 if [ ! -f "${0%/scripts/*}/tmp/.targetinfo" ]; then
 292                         "${0%/*}/scripts/config/mconf" prepare-tmpinfo
 293                 fi
 294
 295                 local mktargets=$(
 296                         sed -ne "
 297                                 /^Target: / { h };
 298                                 /^Target-Arch: $cpuarch\$/ { x; s#^Target: ##p }
 299                         " "${0%/scripts/*}/tmp/.targetinfo" | sort -u
 300                 )
 301
 302                 for mktarget in $mktargets; do
 303                         case "$mktarget" in */*)
 304                                 mktargets=$(echo "$mktargets" | sed -e "/^${mktarget%/*}\$/d")
 305                         esac
 306                 done
 307
 308                 if [ -n "$mktargets" ]; then
 309                         echo "Available targets:"                               >&2
 310                         echo $mktargets                                         >&2
 311                 else
 312                         echo -e "Could not find a suitable OpenWrt target for " >&2
 313                         echo -e "CPU architecture '$cpuarch' - you need to "    >&2
 314                         echo -e "define one first!"                             >&2
 315                 fi
 316                 return 1
 317         fi
 318
 319         # bail out if there is a .config already
 320         if [ -f "${0%/scripts/*}/.config" ]; then
 321                 echo "There already is a .config file, refusing to overwrite!" >&2
 322                 return 1
 323         fi
 324
 325         case "$mktarget" in */*)
 326                 mksubtarget="${mktarget#*/}"
 327                 mktarget="${mktarget%/*}"
 328         ;; esac
 329
 330
 331         echo "CONFIG_TARGET_${mktarget}=y" > "$config"
 332
 333         if [ -n "$mksubtarget" ]; then
 334                 echo "CONFIG_TARGET_${mktarget}_${mksubtarget}=y" >> "$config"
 335         fi
 336
 337         if test_feature "softfloat"; then
 338                 echo "CONFIG_SOFT_FLOAT=y" >> "$config"
 339         else
 340                 echo "# CONFIG_SOFT_FLOAT is not set" >> "$config"
 341         fi
 342
 343         if test_feature "ipv6"; then
 344                 echo "CONFIG_IPV6=y" >> "$config"
 345         else
 346                 echo "# CONFIG_IPV6 is not set" >> "$config"
 347         fi
 348
 349         if test_feature "locale"; then
 350                 echo "CONFIG_BUILD_NLS=y" >> "$config"
 351         else
 352                 echo "# CONFIG_BUILD_NLS is not set" >> "$config"
 353         fi
 354
 355         echo "CONFIG_DEVEL=y" >> "$config"
 356         echo "CONFIG_EXTERNAL_TOOLCHAIN=y" >> "$config"
 357         echo "CONFIG_TOOLCHAIN_ROOT=\"$TOOLCHAIN\"" >> "$config"
 358         echo "CONFIG_TOOLCHAIN_PREFIX=\"$prefix\"" >> "$config"
 359         echo "CONFIG_TARGET_NAME=\"$target\"" >> "$config"
 360
 361         if [ "$LIBC_TYPE" != glibc ]; then
 362                 echo "CONFIG_TOOLCHAIN_LIBC=\"$LIBC_TYPE\"" >> "$config"
 363         fi
 364
 365         local lib
 366         for lib in C RT PTHREAD GCC STDCPP SSP GFORTRAN GOMP; do
 367                 local file
 368                 local spec=""
 369                 local llib="$(echo "$lib" | sed -e 's#.*#\L&#')"
 370                 for file in $(find_libs "$lib"); do
 371                         spec="${spec:+$spec }$(echo "$file" | sed -e "s#^$TOOLCHAIN#.#")"
 372                 done
 373                 if [ -n "$spec" ]; then
 374                         echo "CONFIG_PACKAGE_lib${llib}=y" >> "$config"
 375                         echo "CONFIG_LIB${lib}_FILE_SPEC=\"$spec\"" >> "$config"
 376                 else
 377                         echo "# CONFIG_PACKAGE_lib${llib} is not set" >> "$config"
 378                 fi
 379         done
 380
 381         local bin
 382         for bin in LDD LDCONFIG; do
 383                 local file
 384                 local spec=""
 385                 local lbin="$(echo "$bin" | sed -e 's#.*#\L&#')"
 386                 for file in $(find_bins "$bin"); do
 387                         spec="${spec:+$spec }$(echo "$file" | sed -e "s#^$TOOLCHAIN#.#")"
 388                 done
 389                 if [ -n "$spec" ]; then
 390                         echo "CONFIG_PACKAGE_${lbin}=y" >> "$config"
 391                         echo "CONFIG_${bin}_FILE_SPEC=\"$spec\"" >> "$config"
 392                 else
 393                         echo "# CONFIG_PACKAGE_${lbin} is not set" >> "$config"
 394                 fi
 395         done
 396
 397         # inflate
 398         make -C "${0%/scripts/*}" defconfig
 399         return 0
 400 }
 401
 402
 403 probe_cc() {
 404         if [ -z "$CC" ]; then
 405                 local bin
 406                 for bin in "bin" "usr/bin" "usr/local/bin"; do
 407                         local cmd
 408                         for cmd in "$TOOLCHAIN/$bin/"*-*cc*; do
 409                                 if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then
 410                                         CC="$(cd "${cmd%/*}"; pwd)/${cmd##*/}"
 411                                         return 0
 412                                 fi
 413                         done
 414                 done
 415                 return 1
 416         fi
 417         return 0
 418 }
 419
 420 probe_cxx() {
 421         if [ -z "$CXX" ]; then
 422                 local bin
 423                 for bin in "bin" "usr/bin" "usr/local/bin"; do
 424                         local cmd
 425                         for cmd in "$TOOLCHAIN/$bin/"*-*++*; do
 426                                 if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then
 427                                         CXX="$(cd "${cmd%/*}"; pwd)/${cmd##*/}"
 428                                         return 0
 429                                 fi
 430                         done
 431                 done
 432                 return 1
 433         fi
 434         return 0
 435 }
 436
 437 probe_cpp() {
 438         if [ -z "$CPP" ]; then
 439                 local bin
 440                 for bin in "bin" "usr/bin" "usr/local/bin"; do
 441                         local cmd
 442                         for cmd in "$TOOLCHAIN/$bin/"*-cpp*; do
 443                                 if [ -x "$cmd" ] && [ ! -h "$cmd" ]; then
 444                                         CPP="$(cd "${cmd%/*}"; pwd)/${cmd##*/}"
 445                                         return 0
 446                                 fi
 447                         done
 448                 done
 449                 return 1
 450         fi
 451         return 0
 452 }
 453
 454 probe_libc() {
 455         if [ -z "$LIBC_TYPE" ]; then
 456                 if test_uclibc; then
 457                         LIBC_TYPE="uclibc"
 458                 else
 459                         LIBC_TYPE="glibc"
 460                 fi
 461         fi
 462         return 0
 463 }
 464
 465
 466 while [ -n "$1" ]; do
 467         arg="$1"; shift
 468         case "$arg" in
 469                 --toolchain)
 470                         [ -d "$1" ] || {
 471                                 echo "Toolchain directory '$1' does not exist." >&2
 472                                 exit 1
 473                         }
 474                         TOOLCHAIN="$(cd "$1"; pwd)"; shift
 475                 ;;
 476
 477                 --cflags)
 478                         CFLAGS="${CFLAGS:+$CFLAGS }$1"; shift
 479                 ;;
 480
 481                 --print-libc)
 482                         if probe_cc; then
 483                                 probe_libc
 484                                 echo "$LIBC_TYPE"
 485                                 exit 0
 486                         fi
 487                         echo "No C compiler found in '$TOOLCHAIN'." >&2
 488                         exit 1
 489                 ;;
 490
 491                 --print-target)
 492                         if probe_cc; then
 493                                 exec "$CC" $CFLAGS -dumpmachine
 494                         fi
 495                         echo "No C compiler found in '$TOOLCHAIN'." >&2
 496                         exit 1
 497                 ;;
 498
 499                 --print-bin)
 500                         if [ -z "$1" ]; then
 501                                 echo "Available programs:"                      >&2
 502                                 echo $(echo "$BIN_SPECS" | sed -ne 's#:.*$##p') >&2
 503                                 exit 1
 504                         fi
 505
 506                         find_bins "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-bin
 507                         exit 0
 508                 ;;
 509
 510                 --print-libs)
 511                         if [ -z "$1" ]; then
 512                                 echo "Available libraries:"                     >&2
 513                                 echo $(echo "$LIB_SPECS" | sed -ne 's#:.*$##p') >&2
 514                                 exit 1
 515                         fi
 516
 517                         find_libs "$1" || exec "$0" --toolchain "$TOOLCHAIN" --print-libs
 518                         exit 0
 519                 ;;
 520
 521                 --test)
 522                         test_feature "$1"
 523                         exit $?
 524                 ;;
 525
 526                 --wrap)
 527                         [ -n "$1" ] || exec "$0" --help
 528                         wrap_bins "$1"
 529                         exit $?
 530                 ;;
 531
 532                 --config)
 533                         if probe_cc; then
 534                                 print_config "$1"
 535                                 exit $?
 536                         fi
 537                         echo "No C compiler found in '$TOOLCHAIN'." >&2
 538                         exit 1
 539                 ;;
 540
 541                 -h|--help)
 542                         me="$(basename "$0")"
 543                         echo -e "\nUsage:\n"                                            >&2
 544                         echo -e "  $me --toolchain {directory} --print-libc"            >&2
 545                         echo -e "    Print the libc implementation and exit.\n"         >&2
 546                         echo -e "  $me --toolchain {directory} --print-target"          >&2
 547                         echo -e "    Print the GNU target name and exit.\n"             >&2
 548                         echo -e "  $me --toolchain {directory} --print-bin {program}"   >&2
 549                         echo -e "    Print executables belonging to given program,"     >&2
 550                         echo -e "    omit program argument to get a list of names.\n"   >&2
 551                         echo -e "  $me --toolchain {directory} --print-libs {library}"  >&2
 552                         echo -e "    Print shared objects belonging to given library,"  >&2
 553                         echo -e "    omit library argument to get a list of names.\n"   >&2
 554                         echo -e "  $me --toolchain {directory} --test {feature}"        >&2
 555                         echo -e "    Test given feature, exit code indicates success."  >&2
 556                         echo -e "    Possible features are 'c', 'c++', 'softfloat',"    >&2
 557                         echo -e "    'lfs', 'rpc', 'ipv6', 'wchar', 'locale' and "      >&2
 558                         echo -e "    'threads'.\n"                                      >&2
 559                         echo -e "  $me --toolchain {directory} --wrap {directory}"      >&2
 560                         echo -e "    Create wrapper scripts for C and C++ compiler, "   >&2
 561                         echo -e "    linker, assembler and other key executables in "   >&2
 562                         echo -e "    the directory given with --wrap.\n"                >&2
 563                         echo -e "  $me --toolchain {directory} --config {target}"       >&2
 564                         echo -e "    Analyze the given toolchain and print a suitable"  >&2
 565                         echo -e "    .config for the given target. Omit target "        >&2
 566                         echo -e "    argument to get a list of names.\n"                >&2
 567                         echo -e "  $me --help"                                          >&2
 568                         echo -e "    Display this help text and exit.\n\n"              >&2
 569                         echo -e "  Most commands also take a --cflags parameter which " >&2
 570                         echo -e "  is used to specify C flags to be passed to the "     >&2
 571                         echo -e "  cross compiler when performing tests."               >&2
 572                         echo -e "  This paremter may be repeated multiple times."       >&2
 573                         exit 1
 574                 ;;
 575
 576                 *)
 577                         echo "Unknown argument '$arg'" >&2
 578                         exec $0 --help
 579                 ;;
 580         esac
 581 done
 582
 583 exec $0 --help