| 1 | #!/bin/sh |
| 2 | # genscripts.sh - generate the ld-emulation-target specific files |
| 3 | # Copyright 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| 4 | # |
| 5 | # This file is part of the Gnu Linker. |
| 6 | # |
| 7 | # This program is free software; you can redistribute it and/or modify |
| 8 | # it under the terms of the GNU General Public License as published by |
| 9 | # the Free Software Foundation; either version 3, or (at your option) |
| 10 | # any later version. |
| 11 | # |
| 12 | # This program is distributed in the hope that it will be useful, |
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | # GNU General Public License for more details. |
| 16 | # |
| 17 | # You should have received a copy of the GNU General Public License |
| 18 | # along with GLD; see the file COPYING. If not, write to the Free |
| 19 | # Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | # 02110-1301, USA. |
| 21 | # |
| 22 | # Usage: genscripts_extra.sh \ |
| 23 | # srcdir \ |
| 24 | # libdir \ |
| 25 | # prefix \ |
| 26 | # exec_prefix \ |
| 27 | # host \ |
| 28 | # target \ |
| 29 | # target_alias \ |
| 30 | # default_emulation \ |
| 31 | # native_lib_dirs \ |
| 32 | # use_sysroot \ |
| 33 | # enable_initfini_array \ |
| 34 | # this_emulation \ |
| 35 | # optional: |
| 36 | # tool_dir \ |
| 37 | # customizer_script |
| 38 | # |
| 39 | # Sample usage: |
| 40 | # |
| 41 | # genscripts_extra.sh \ |
| 42 | # /sources/ld \ |
| 43 | # /usr/local/lib \ |
| 44 | # /usr/local \ |
| 45 | # /usr/local \ |
| 46 | # sparc-sun-sunos4.1.3 \ |
| 47 | # sparc-sun-sunos4.1.3 \ |
| 48 | # sparc-sun-sunos4.1.3 \ |
| 49 | # sun4 \ |
| 50 | # "" \ |
| 51 | # no \ |
| 52 | # sun3 \ |
| 53 | # sparc-sun-sunos4.1.3 \ |
| 54 | # sparc.sh |
| 55 | # |
| 56 | # produces the linker scripts: |
| 57 | # |
| 58 | # sun3.x [default linker script] |
| 59 | # sun3.xbn [used when the linker is invoked with "-N"] |
| 60 | # sun3.xn [used when the linker is invoked with "-n"] |
| 61 | # sun3.xr [used when the linker is invoked with "-r"] |
| 62 | # sun3.xu [used when the linker is invoked with "-Ur"] |
| 63 | # and maybe: |
| 64 | # sun3.xc [used when the linker is invoked with "-z combreloc"] |
| 65 | # sun3.xsc [used when the linker is invoked with "--shared"] |
| 66 | # sun3.xdc [used when the linker is invoked with "-pie"] |
| 67 | # sun3.xa [used when the linker is invoked with "--enable-auto-import"] |
| 68 | # |
| 69 | # It also produced the C source file: |
| 70 | # |
| 71 | # em_sun3.c |
| 72 | # |
| 73 | # which is then compiled into the linker. |
| 74 | # |
| 75 | # The linker scripts are created by running the shell script |
| 76 | # /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME} |
| 77 | # (and any other variables it wants to). ${SCRIPT_NAME} is then |
| 78 | # invoked with a variable called ${LD_FLAG} to tell it which version |
| 79 | # of the linker script to create. |
| 80 | |
| 81 | |
| 82 | srcdir=$1 |
| 83 | libdir=$2 |
| 84 | prefix=$3 |
| 85 | exec_prefix=$4 |
| 86 | host=$5 |
| 87 | target=$6 |
| 88 | target_alias=$7 |
| 89 | EMULATION_LIBPATH=$8 |
| 90 | NATIVE_LIB_DIRS=$9 |
| 91 | shift 9 |
| 92 | use_sysroot=$1 |
| 93 | ENABLE_INITFINI_ARRAY=$2 |
| 94 | EMULATION_NAME=$3 |
| 95 | TOOL_LIB=$4 |
| 96 | CUSTOMIZER_SCRIPT=$5 |
| 97 | |
| 98 | if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then |
| 99 | CUSTOMIZER_SCRIPT=${EMULATION_NAME} |
| 100 | fi |
| 101 | CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh" |
| 102 | |
| 103 | # Include the emulation-specific parameters: |
| 104 | . ${CUSTOMIZER_SCRIPT} |
| 105 | |
| 106 | if test -d ldscripts; then |
| 107 | true |
| 108 | else |
| 109 | mkdir ldscripts |
| 110 | fi |
| 111 | |
| 112 | # Set some flags for the emultempl scripts. USE_LIBPATH will |
| 113 | # be set for any libpath-using emulation; NATIVE will be set for a |
| 114 | # libpath-using emulation where ${host} = ${target}. NATIVE |
| 115 | # may already have been set by the emulparams file, but that's OK |
| 116 | # (it'll just get set to "yes" twice). |
| 117 | |
| 118 | case " $EMULATION_LIBPATH " in |
| 119 | *" ${EMULATION_NAME} "*) |
| 120 | if [ "x${host}" = "x${target}" ] ; then |
| 121 | NATIVE=yes |
| 122 | USE_LIBPATH=yes |
| 123 | elif [ "x${use_sysroot}" = "xyes" ] ; then |
| 124 | USE_LIBPATH=yes |
| 125 | fi |
| 126 | ;; |
| 127 | esac |
| 128 | |
| 129 | # If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also. |
| 130 | if test "x$NATIVE" = "xyes" ; then |
| 131 | USE_LIBPATH=yes |
| 132 | fi |
| 133 | |
| 134 | # Set the library search path, for libraries named by -lfoo. |
| 135 | # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. |
| 136 | # Otherwise, the default is set here. |
| 137 | # |
| 138 | # The format is the usual list of colon-separated directories. |
| 139 | # To force a logically empty LIB_PATH, do LIBPATH=":". |
| 140 | # |
| 141 | # If we are using a sysroot, prefix library paths with "=" to indicate this. |
| 142 | # |
| 143 | # If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of |
| 144 | # the library path with the suffix applied. |
| 145 | |
| 146 | # Paths with LIBPATH_SUFFIX |
| 147 | lib_path1= |
| 148 | # Paths without LIBPATH_SUFFIX |
| 149 | lib_path2= |
| 150 | if [ "${LIB_PATH}" != ":" ] ; then |
| 151 | lib_path2=${LIB_PATH} |
| 152 | fi |
| 153 | |
| 154 | # Add args to lib_path1 and lib_path2, discarding any duplicates |
| 155 | append_to_lib_path() |
| 156 | { |
| 157 | if [ $# != 0 ]; then |
| 158 | for lib in "$@"; do |
| 159 | # The "=" is harmless if we aren't using a sysroot, but also needless. |
| 160 | if [ "x${use_sysroot}" = "xyes" ] ; then |
| 161 | lib="=${lib}" |
| 162 | fi |
| 163 | skip_lib=no |
| 164 | if test -n "${LIBPATH_SUFFIX}"; then |
| 165 | case "${lib}" in |
| 166 | *${LIBPATH_SUFFIX}) |
| 167 | case :${lib_path1}: in |
| 168 | *:${lib}:*) ;; |
| 169 | ::) lib_path1=${lib} ;; |
| 170 | *) lib_path1=${lib_path1}:${lib} ;; |
| 171 | esac ;; |
| 172 | *) |
| 173 | if test -n "${LIBPATH_SUFFIX_SKIP}"; then |
| 174 | case "${lib}" in |
| 175 | *${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;; |
| 176 | esac |
| 177 | fi |
| 178 | if test "${skip_lib}" = "no"; then |
| 179 | case :${lib_path1}: in |
| 180 | *:${lib}${LIBPATH_SUFFIX}:*) ;; |
| 181 | ::) lib_path1=${lib}${LIBPATH_SUFFIX} ;; |
| 182 | *) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;; |
| 183 | esac |
| 184 | fi ;; |
| 185 | esac |
| 186 | fi |
| 187 | if test "${skip_lib}" = "no"; then |
| 188 | case :${lib_path1}:${lib_path2}: in |
| 189 | *:${lib}:*) ;; |
| 190 | *::) lib_path2=${lib} ;; |
| 191 | *) lib_path2=${lib_path2}:${lib} ;; |
| 192 | esac |
| 193 | fi |
| 194 | done |
| 195 | fi |
| 196 | } |
| 197 | |
| 198 | # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native |
| 199 | # except when LIBPATH=":". |
| 200 | if [ "${LIB_PATH}" != ":" ] ; then |
| 201 | libs= |
| 202 | if [ "x${TOOL_LIB}" = "x" ] ; then |
| 203 | if [ "x${NATIVE}" = "xyes" ] ; then |
| 204 | libs="${exec_prefix}/${target_alias}/lib" |
| 205 | fi |
| 206 | else |
| 207 | # For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX} |
| 208 | # and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path, |
| 209 | # because 64bit libraries may be in both places, depending on |
| 210 | # cross-development setup method (e.g.: /usr/s390x-linux/lib64 |
| 211 | # vs. /usr/s390-linux/lib64) |
| 212 | case "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in |
| 213 | :* | *::* | *:*:*${LIBPATH_SUFFIX}) ;; |
| 214 | *) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;; |
| 215 | esac |
| 216 | libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}" |
| 217 | fi |
| 218 | append_to_lib_path ${libs} |
| 219 | fi |
| 220 | |
| 221 | if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then |
| 222 | libs=${NATIVE_LIB_DIRS} |
| 223 | if [ "x${NATIVE}" = "xyes" ] ; then |
| 224 | case " ${libs} " in |
| 225 | *" ${libdir} "*) ;; |
| 226 | *) libs="${libdir} ${libs}" ;; |
| 227 | esac |
| 228 | fi |
| 229 | append_to_lib_path ${libs} |
| 230 | fi |
| 231 | |
| 232 | case :${lib_path1}:${lib_path2}: in |
| 233 | *:: | ::*) LIB_PATH=${lib_path1}${lib_path2} ;; |
| 234 | *) LIB_PATH=${lib_path1}:${lib_path2} ;; |
| 235 | esac |
| 236 | |
| 237 | LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'` |
| 238 | |
| 239 | # We need it for testsuite. |
| 240 | set $EMULATION_LIBPATH |
| 241 | if [ "x$1" = "x$EMULATION_NAME" ]; then |
| 242 | test -d tmpdir || mkdir tmpdir |
| 243 | rm -f tmpdir/libpath.exp |
| 244 | echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp |
| 245 | fi |
| 246 | |
| 247 | # Generate 5 or 6 script files from a master script template in |
| 248 | # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 |
| 249 | # script files is actually used depends on command line options given |
| 250 | # to ld. (SCRIPT_NAME was set in the emulparams_file.) |
| 251 | # |
| 252 | # A .x script file is the default script. |
| 253 | # A .xr script is for linking without relocation (-r flag). |
| 254 | # A .xu script is like .xr, but *do* create constructors (-Ur flag). |
| 255 | # A .xn script is for linking with -n flag (mix text and data on same page). |
| 256 | # A .xbn script is for linking with -N flag (mix text and data on same page). |
| 257 | # A .xs script is for generating a shared library with the --shared |
| 258 | # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the |
| 259 | # emulation parameters. |
| 260 | # A .xc script is for linking with -z combreloc; it is only generated if |
| 261 | # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or |
| 262 | # $SCRIPT_NAME is "elf". |
| 263 | # A .xsc script is for linking with --shared -z combreloc; it is generated |
| 264 | # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or |
| 265 | # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation |
| 266 | # parameters too. |
| 267 | |
| 268 | if [ "x$SCRIPT_NAME" = "xelf" ]; then |
| 269 | GENERATE_COMBRELOC_SCRIPT=yes |
| 270 | fi |
| 271 | |
| 272 | SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}} |
| 273 | |
| 274 | # Determine DATA_ALIGNMENT for the 5 variants, using |
| 275 | # values specified in the emulparams/<script_to_run>.sh file or default. |
| 276 | |
| 277 | DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" |
| 278 | DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" |
| 279 | DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" |
| 280 | DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" |
| 281 | DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" |
| 282 | |
| 283 | LD_FLAG=r |
| 284 | DATA_ALIGNMENT=${DATA_ALIGNMENT_r} |
| 285 | DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" |
| 286 | ( echo "/* Script for ld -r: link without relocation */" |
| 287 | . ${CUSTOMIZER_SCRIPT} |
| 288 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 289 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr |
| 290 | |
| 291 | LD_FLAG=u |
| 292 | DATA_ALIGNMENT=${DATA_ALIGNMENT_u} |
| 293 | CONSTRUCTING=" " |
| 294 | ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */" |
| 295 | . ${CUSTOMIZER_SCRIPT} |
| 296 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 297 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu |
| 298 | |
| 299 | LD_FLAG= |
| 300 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} |
| 301 | RELOCATING=" " |
| 302 | ( echo "/* Default linker script, for normal executables */" |
| 303 | . ${CUSTOMIZER_SCRIPT} |
| 304 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 305 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x |
| 306 | |
| 307 | LD_FLAG=n |
| 308 | DATA_ALIGNMENT=${DATA_ALIGNMENT_n} |
| 309 | ( echo "/* Script for -n: mix text and data on same page */" |
| 310 | . ${CUSTOMIZER_SCRIPT} |
| 311 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 312 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn |
| 313 | |
| 314 | LD_FLAG=N |
| 315 | DATA_ALIGNMENT=${DATA_ALIGNMENT_N} |
| 316 | ( echo "/* Script for -N: mix text and data on same page; don't align data */" |
| 317 | . ${CUSTOMIZER_SCRIPT} |
| 318 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 319 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn |
| 320 | |
| 321 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 322 | DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}} |
| 323 | LD_FLAG=c |
| 324 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp |
| 325 | ( echo "/* Script for -z combreloc: combine and sort reloc sections */" |
| 326 | . ${CUSTOMIZER_SCRIPT} |
| 327 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 328 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc |
| 329 | rm -f ${COMBRELOC} |
| 330 | LD_FLAG=w |
| 331 | RELRO_NOW=" " |
| 332 | COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp |
| 333 | ( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */" |
| 334 | . ${CUSTOMIZER_SCRIPT} |
| 335 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 336 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xw |
| 337 | rm -f ${COMBRELOC} |
| 338 | COMBRELOC= |
| 339 | unset RELRO_NOW |
| 340 | fi |
| 341 | |
| 342 | if test -n "$GENERATE_SHLIB_SCRIPT"; then |
| 343 | LD_FLAG=shared |
| 344 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} |
| 345 | CREATE_SHLIB=" " |
| 346 | ( |
| 347 | echo "/* Script for ld --shared: link shared library */" |
| 348 | . ${CUSTOMIZER_SCRIPT} |
| 349 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 350 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs |
| 351 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 352 | LD_FLAG=cshared |
| 353 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} |
| 354 | COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp |
| 355 | ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */" |
| 356 | . ${CUSTOMIZER_SCRIPT} |
| 357 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 358 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc |
| 359 | rm -f ${COMBRELOC} |
| 360 | LD_FLAG=wshared |
| 361 | RELRO_NOW=" " |
| 362 | COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp |
| 363 | ( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */" |
| 364 | . ${CUSTOMIZER_SCRIPT} |
| 365 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 366 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsw |
| 367 | rm -f ${COMBRELOC} |
| 368 | COMBRELOC= |
| 369 | unset RELRO_NOW |
| 370 | fi |
| 371 | unset CREATE_SHLIB |
| 372 | fi |
| 373 | |
| 374 | if test -n "$GENERATE_PIE_SCRIPT"; then |
| 375 | LD_FLAG=pie |
| 376 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} |
| 377 | CREATE_PIE=" " |
| 378 | ( |
| 379 | echo "/* Script for ld -pie: link position independent executable */" |
| 380 | . ${CUSTOMIZER_SCRIPT} |
| 381 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 382 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd |
| 383 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 384 | LD_FLAG=cpie |
| 385 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} |
| 386 | COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp |
| 387 | ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */" |
| 388 | . ${CUSTOMIZER_SCRIPT} |
| 389 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 390 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc |
| 391 | rm -f ${COMBRELOC} |
| 392 | LD_FLAG=wpie |
| 393 | RELRO_NOW=" " |
| 394 | COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp |
| 395 | ( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */" |
| 396 | . ${CUSTOMIZER_SCRIPT} |
| 397 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 398 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdw |
| 399 | rm -f ${COMBRELOC} |
| 400 | COMBRELOC= |
| 401 | unset RELRO_NOW |
| 402 | fi |
| 403 | unset CREATE_PIE |
| 404 | fi |
| 405 | |
| 406 | if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then |
| 407 | LD_FLAG=auto_import |
| 408 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} |
| 409 | ( |
| 410 | echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data */" |
| 411 | . ${CUSTOMIZER_SCRIPT} |
| 412 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 413 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xa |
| 414 | fi |
| 415 | |
| 416 | case "$COMPILE_IN: $EMULATION_LIBPATH " in |
| 417 | :*" ${EMULATION_NAME} "*) COMPILE_IN=yes;; |
| 418 | esac |
| 419 | |
| 420 | # PR ld/5652: |
| 421 | # Determine if the shell has support for the variable BASH_LINENO. |
| 422 | # When it is the case, it is only available inside functions. |
| 423 | has_lineno() |
| 424 | { |
| 425 | test "x$BASH_LINENO" != "x" |
| 426 | } |
| 427 | |
| 428 | # Enable accruate error source in the compiler error messages, if possible. |
| 429 | if has_lineno; then |
| 430 | . ${srcdir}/genscrba.sh |
| 431 | else |
| 432 | source_em() |
| 433 | { |
| 434 | . $1 |
| 435 | } |
| 436 | fragment() |
| 437 | { |
| 438 | cat >> e${EMULATION_NAME}.c |
| 439 | } |
| 440 | fi |
| 441 | |
| 442 | # Generate e${EMULATION_NAME}.c. |
| 443 | # Start with an empty file, then the sourced .em script |
| 444 | # can use the "fragment" function to append. |
| 445 | > e${EMULATION_NAME}.c |
| 446 | source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em |