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