1 # This file adds the function to build the gcc C compiler
2 # Copyright 2007 Yann E. MORIN
3 # Licensed under the GPL v2. See COPYING in the root of this package
9 local linaro_base_url="http://launchpad.net/gcc-linaro"
12 # Account for the Linaro versioning
13 linaro_version="$( echo "${CT_CC_VERSION}" \
14 |sed -r -e 's/^linaro-//;' \
16 linaro_series="$( echo "${linaro_version}" \
17 |sed -r -e 's/-.*//;' \
20 # Ah! gcc folks are kind of 'different': they store the tarballs in
21 # subdirectories of the same name! That's because gcc is such /crap/ that
22 # it is such /big/ that it needs being splitted for distribution! Sad. :-(
23 # Arrgghh! Some of those versions does not follow this convention:
24 # gcc-3.3.3 lives in releases/gcc-3.3.3, while gcc-2.95.* isn't in a
25 # subdirectory! You bastard!
26 CT_GetFile "gcc-${CT_CC_VERSION}" \
27 {ftp,http}://ftp.gnu.org/gnu/gcc{,{,/releases}/gcc-${CT_CC_VERSION}} \
28 ftp://ftp.irisa.fr/pub/mirrors/gcc.gnu.org/gcc/releases/gcc-${CT_CC_VERSION} \
29 ftp://ftp.uvsq.fr/pub/gcc/snapshots/${CT_CC_VERSION} \
30 "${linaro_base_url}/${linaro_series}/${linaro_version}/+download"
32 # Starting with GCC 4.3, ecj is used for Java, and will only be
33 # built if the configure script finds ecj.jar at the top of the
34 # GCC source tree, which will not be there unless we get it and
35 # put it there ourselves
36 if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" ]; then
37 CT_GetFile ecj-latest .jar ftp://gcc.gnu.org/pub/java \
38 ftp://sourceware.org/pub/java
44 CT_Extract "gcc-${CT_CC_VERSION}"
45 CT_Patch "gcc" "${CT_CC_VERSION}"
47 # Copy ecj-latest.jar to ecj.jar at the top of the GCC source tree
48 if [ "${CT_CC_LANG_JAVA_USE_ECJ}" = "y" \
49 -a ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar" \
51 CT_DoExecLog ALL cp -v "${CT_TARBALLS_DIR}/ecj-latest.jar" "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/ecj.jar"
55 #------------------------------------------------------------------------------
58 # If we're building for bare metal, build the static core gcc,
60 # In case we're not bare metal and building a canadian compiler, do nothing
61 # In case we're not bare metal, and we're NPTL, build the static core gcc.
62 # In any other case, do nothing.
63 case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
64 y,*,*) do_cc_core mode=static;;
66 ,,nptl) do_cc_core mode=static;;
73 # In case we're building for bare metal, do nothing, we already have
75 # In case we're not bare metal and building a canadian compiler, do nothing
76 # In case we're NPTL, build the shared core gcc and the target libgcc.
77 # In any other case, build the static core gcc and, if using gcc-4.3+,
78 # also build the target libgcc.
79 case "${CT_BARE_METAL},${CT_CANADIAN},${CT_THREADS}" in
81 if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
82 do_cc_core mode=baremetal build_libgcc=yes build_libstdcxx=yes build_staticlinked=yes
84 do_cc_core mode=baremetal build_libgcc=yes build_libstdcxx=yes
89 do_cc_core mode=shared build_libgcc=yes
92 do_cc_core mode=static build_libgcc=yes
94 *) if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
95 do_cc_core mode=static build_libgcc=yes
97 do_cc_core mode=static
103 #------------------------------------------------------------------------------
105 # This function is used to build both the static and the shared core C conpiler,
106 # with or without the target libgcc. We need to know wether:
107 # - we're building static, shared or bare metal: mode=[static|shared|baremetal]
108 # - we need to build libgcc or not : build_libgcc=[yes|no] (default: no)
109 # - we need to build libstdc++ or not : build_libstdcxx=[yes|no] (default: no)
110 # - we need to build statically linked or not : build_staticlinked=[yes|no] (default: no)
111 # Usage: do_cc_core mode=[static|shared|baremetal] build_libgcc=[yes|no] build_staticlinked=[yes|no]
114 local build_libgcc=no
115 local build_libstdcxx=no
116 local build_staticlinked=no
117 local core_prefix_dir
120 local -a extra_config
121 local -a core_LDFLAGS
122 local -a core_targets
124 while [ $# -ne 0 ]; do
132 core_prefix_dir="${CT_CC_CORE_STATIC_PREFIX_DIR}"
133 extra_config+=("--with-newlib")
134 extra_config+=("--enable-threads=no")
135 extra_config+=("--disable-shared")
136 copy_headers=y # For baremetal, as there's no headers to copy,
137 # we copy an empty directory. So, who cares?
140 core_prefix_dir="${CT_CC_CORE_SHARED_PREFIX_DIR}"
141 extra_config+=("--enable-shared")
145 core_prefix_dir="${CT_PREFIX_DIR}"
146 extra_config+=("--with-newlib")
147 extra_config+=("--enable-threads=no")
148 extra_config+=("--disable-shared")
149 [ "${CT_CC_LANG_CXX}" = "y" ] && lang_opt="${lang_opt},c++"
153 CT_Abort "Internal Error: 'mode' must be one of: 'static', 'shared' or 'baremetal', not '${mode:-(empty)}'"
157 CT_DoStep INFO "Installing ${mode} core C compiler"
158 mkdir -p "${CT_BUILD_DIR}/build-cc-core-${mode}"
159 cd "${CT_BUILD_DIR}/build-cc-core-${mode}"
161 # Bare metal delivers the core compiler as final compiler, so add version info and bugurl
162 [ -n "${CT_CC_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_CC_BUGURL}")
163 [ -n "${CT_CC_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_CC_PKGVERSION}")
165 if [ "${copy_headers}" = "y" ]; then
166 CT_DoLog DEBUG "Copying headers to install area of bootstrap gcc, so it can build libgcc2"
167 CT_DoExecLog ALL cp -a "${CT_HEADERS_DIR}" "${core_prefix_dir}/${CT_TARGET}/include"
170 CT_DoLog EXTRA "Configuring ${mode} core C compiler"
172 for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
173 eval tmp="\${CT_ARCH_WITH_${tmp}}"
174 if [ -n "${tmp}" ]; then
175 extra_config+=("${tmp}")
178 if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
179 extra_config+=("--enable-__cxa_atexit")
181 extra_config+=("--disable-__cxa_atexit")
185 # Keep this full if-else-if-elif-fi-fi block in sync
186 # with the same block in do_cc, below.
187 if [ "${build_staticlinked}" = "yes" ]; then
188 core_LDFLAGS+=("-static")
189 extra_config+=("--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++ -lm")
190 # Companion libraries are build static (eg !shared), so
191 # the libstdc++ is not pulled automatically, although it
192 # is needed. Shoe-horn it in our LDFLAGS
193 # Ditto libm on some Fedora boxen
194 final_LDFLAGS+=("-lstdc++")
195 final_LDFLAGS+=("-lm")
197 if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
198 # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
200 # FIXME: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
201 # see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
202 extra_config+=("--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm")
203 elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
204 # When companion libraries are build static (eg !shared),
205 # the libstdc++ is not pulled automatically, although it
206 # is needed. Shoe-horn it in our LDFLAGS
207 # Ditto libm on some Fedora boxen
208 core_LDFLAGS+=("-lstdc++")
209 core_LDFLAGS+=("-lm")
213 if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
214 extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
215 extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
217 if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
218 extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
220 if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
221 extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
222 extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
223 elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
224 extra_config+=("--with-ppl=no")
225 extra_config+=("--with-cloog=no")
227 if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
228 extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
229 extra_config+=("--enable-lto")
230 elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
231 extra_config+=("--with-libelf=no")
232 extra_config+=("--disable-lto")
235 if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
236 extra_config+=("--enable-target-optspace")
239 case "${CT_CC_GCC_LDBL_128}" in
240 y) extra_config+=("--with-long-double-128");;
242 "") extra_config+=("--without-long-double-128");;
245 CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
247 # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
248 CC_FOR_BUILD="${CT_BUILD}-gcc" \
249 CFLAGS="${CT_CFLAGS_FOR_HOST}" \
250 LDFLAGS="${core_LDFLAGS[*]}" \
252 "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure" \
253 --build=${CT_BUILD} \
255 --target=${CT_TARGET} \
256 --prefix="${core_prefix_dir}" \
257 --with-local-prefix="${CT_SYSROOT_DIR}" \
259 --disable-libmudflap \
260 ${CC_CORE_SYSROOT_ARG} \
261 "${extra_config[@]}" \
263 --enable-symvers=gnu \
264 --enable-languages="${lang_opt}" \
265 ${CT_CC_CORE_EXTRA_CONFIG}
267 if [ "${build_libgcc}" = "yes" ]; then
268 # HACK: we need to override SHLIB_LC from gcc/config/t-slibgcc-elf-ver or
269 # gcc/config/t-libunwind so -lc is removed from the link for
270 # libgcc_s.so, as we do not have a target -lc yet.
271 # This is not as ugly as it appears to be ;-) All symbols get resolved
272 # during the glibc build, and we provide a proper libgcc_s.so for the
273 # cross toolchain during the final gcc build.
275 # As we cannot modify the source tree, nor override SHLIB_LC itself
276 # during configure or make, we have to edit the resultant
277 # gcc/libgcc.mk itself to remove -lc from the link.
278 # This causes us to have to jump through some hoops...
280 # To produce libgcc.mk to edit we firstly require libiberty.a,
281 # so we configure then build it.
282 # Next we have to configure gcc, create libgcc.mk then edit it...
283 # So much easier if we just edit the source tree, but hey...
284 if [ ! -f "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/gcc/BASE-VER" ]; then
285 CT_DoExecLog CFG make configure-libiberty
286 CT_DoExecLog ALL make ${JOBSFLAGS} -C libiberty libiberty.a
287 CT_DoExecLog CFG make configure-gcc configure-libcpp
288 CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp
290 CT_DoExecLog CFG make configure-gcc configure-libcpp configure-build-libiberty
291 CT_DoExecLog ALL make ${JOBSFLAGS} all-libcpp all-build-libiberty
293 # HACK: gcc-4.2 uses libdecnumber to build libgcc.mk, so build it here.
294 if [ -d "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/libdecnumber" ]; then
295 CT_DoExecLog CFG make configure-libdecnumber
296 CT_DoExecLog ALL make ${JOBSFLAGS} -C libdecnumber libdecnumber.a
299 # Starting with GCC 4.3, libgcc.mk is no longer built,
300 # and libgcc.mvars is used instead.
302 if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
303 libgcc_rule="libgcc.mvars"
304 core_targets=( gcc target-libgcc )
306 libgcc_rule="libgcc.mk"
310 # On bare metal and canadian build the host-compiler is used when
311 # actually the build-system compiler is required. Choose the correct
312 # compilers for canadian build and use the defaults on other
314 if [ "${CT_BARE_METAL},${CT_CANADIAN}" = "y,y" ]; then
315 repair_cc="CC_FOR_BUILD=${CT_BUILD}-gcc \
316 GCC_FOR_TARGET=${CT_TARGET}-gcc"
321 CT_DoExecLog ALL make ${JOBSFLAGS} -C gcc ${libgcc_rule} \
323 sed -r -i -e 's@-lc@@g' gcc/${libgcc_rule}
327 if [ "${build_libstdcxx}" = "yes" \
328 -a "${CT_CC_LANG_CXX}" = "y" \
330 core_targets+=( target-libstdc++-v3 )
333 CT_DoLog EXTRA "Building ${mode} core C compiler"
334 CT_DoExecLog ALL make ${JOBSFLAGS} "${core_targets[@]/#/all-}"
336 CT_DoLog EXTRA "Installing ${mode} core C compiler"
337 CT_DoExecLog ALL make "${core_targets[@]/#/install-}"
339 # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
340 # to call the C compiler with the same, somewhat canonical name.
341 # check whether compiler has an extension
342 file="$( ls -1 "${core_prefix_dir}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
343 [ -z "${file}" ] || ext=".${file##*.}"
344 CT_DoExecLog ALL ln -sv "${CT_TARGET}-gcc${ext}" "${core_prefix_dir}/bin/${CT_TARGET}-cc${ext}"
349 #------------------------------------------------------------------------------
352 local -a extra_config
353 local -a final_LDFLAGS
356 # If building for bare metal, nothing to be done here, the static core conpiler is enough!
357 [ "${CT_BARE_METAL}" = "y" ] && return 0
359 CT_DoStep INFO "Installing final compiler"
361 mkdir -p "${CT_BUILD_DIR}/build-cc"
362 cd "${CT_BUILD_DIR}/build-cc"
364 CT_DoLog EXTRA "Configuring final compiler"
366 # Enable selected languages
368 [ "${CT_CC_LANG_CXX}" = "y" ] && lang_opt="${lang_opt},c++"
369 [ "${CT_CC_LANG_FORTRAN}" = "y" ] && lang_opt="${lang_opt},fortran"
370 [ "${CT_CC_LANG_ADA}" = "y" ] && lang_opt="${lang_opt},ada"
371 [ "${CT_CC_LANG_JAVA}" = "y" ] && lang_opt="${lang_opt},java"
372 [ "${CT_CC_LANG_OBJC}" = "y" ] && lang_opt="${lang_opt},objc"
373 [ "${CT_CC_LANG_OBJCXX}" = "y" ] && lang_opt="${lang_opt},obj-c++"
374 CT_Test "Building ADA language is not yet supported. Will try..." "${CT_CC_LANG_ADA}" = "y"
375 CT_Test "Building Objective-C language is not yet supported. Will try..." "${CT_CC_LANG_OBJC}" = "y"
376 CT_Test "Building Objective-C++ language is not yet supported. Will try..." "${CT_CC_LANG_OBJCXX}" = "y"
377 CT_Test "Building ${CT_CC_LANG_OTHERS//,/ } language(s) is not yet supported. Will try..." -n "${CT_CC_LANG_OTHERS}"
378 lang_opt=$(echo "${lang_opt},${CT_CC_LANG_OTHERS}" |sed -r -e 's/,+/,/g; s/,*$//;')
380 extra_config+=("--enable-languages=${lang_opt}")
381 extra_config+=("--disable-multilib")
382 for tmp in ARCH ABI CPU TUNE FPU FLOAT; do
383 eval tmp="\${CT_ARCH_WITH_${tmp}}"
384 if [ -n "${tmp}" ]; then
385 extra_config+=("${tmp}")
389 [ "${CT_SHARED_LIBS}" = "y" ] || extra_config+=("--disable-shared")
390 [ -n "${CT_CC_PKGVERSION}" ] && extra_config+=("--with-pkgversion=${CT_CC_PKGVERSION}")
391 [ -n "${CT_CC_BUGURL}" ] && extra_config+=("--with-bugurl=${CT_CC_BUGURL}")
392 case "${CT_CC_GCC_SJLJ_EXCEPTIONS}" in
393 y) extra_config+=("--enable-sjlj-exceptions");;
395 "") extra_config+=("--disable-sjlj-exceptions");;
397 if [ "${CT_CC_CXA_ATEXIT}" = "y" ]; then
398 extra_config+=("--enable-__cxa_atexit")
400 extra_config+=("--disable-__cxa_atexit")
402 if [ -n "${CC_ENABLE_CXX_FLAGS}" ]; then
403 extra_config+=("--enable-cxx-flags=${CC_ENABLE_CXX_FLAGS}")
405 if [ "${CT_CC_GCC_LIBMUDFLAP}" = "y" ]; then
406 extra_config+=(--enable-libmudflap)
408 extra_config+=(--disable-libmudflap)
410 if [ "${CT_CC_GCC_LIBGOMP}" = "y" ]; then
411 extra_config+=(--enable-libgomp)
413 extra_config+=(--disable-libgomp)
415 if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
416 extra_config+=(--enable-libssp)
418 extra_config+=(--disable-libssp)
422 # Keep this full if-else-if-elif-fi-fi block in sync
423 # with the same block in do_cc_core, above.
424 if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then
425 final_LDFLAGS+=("-static")
426 extra_config+=("--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++ -lm")
427 # Companion libraries are build static (eg !shared), so
428 # the libstdc++ is not pulled automatically, although it
429 # is needed. Shoe-horn it in our LDFLAGS
430 # Ditto libm on some Fedora boxen
431 final_LDFLAGS+=("-lstdc++")
432 final_LDFLAGS+=("-lm")
434 if [ "${CT_CC_STATIC_LIBSTDCXX}" = "y" ]; then
435 # this is from CodeSourcery arm-2010q1-202-arm-none-linux-gnueabi.src.tar.bz2
437 # FIXME: if the host gcc is gcc-4.5 then presumably we could use -static-libstdc++,
438 # see http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01635.html
439 extra_config+=("--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm")
440 elif [ "${CT_COMPLIBS_SHARED}" != "y" ]; then
441 # When companion libraries are build static (eg !shared),
442 # the libstdc++ is not pulled automatically, although it
443 # is needed. Shoe-horn it in our LDFLAGS
444 # Ditto libm on some Fedora boxen
445 final_LDFLAGS+=("-lstdc++")
446 final_LDFLAGS+=("-lm")
450 if [ "${CT_CC_GCC_USE_GMP_MPFR}" = "y" ]; then
451 extra_config+=("--with-gmp=${CT_COMPLIBS_DIR}")
452 extra_config+=("--with-mpfr=${CT_COMPLIBS_DIR}")
454 if [ "${CT_CC_GCC_USE_MPC}" = "y" ]; then
455 extra_config+=("--with-mpc=${CT_COMPLIBS_DIR}")
457 if [ "${CT_CC_GCC_USE_GRAPHITE}" = "y" ]; then
458 extra_config+=("--with-ppl=${CT_COMPLIBS_DIR}")
459 extra_config+=("--with-cloog=${CT_COMPLIBS_DIR}")
460 elif [ "${CT_CC_GCC_HAS_GRAPHITE}" = "y" ]; then
461 extra_config+=("--with-ppl=no")
462 extra_config+=("--with-cloog=no")
464 if [ "${CT_CC_GCC_USE_LTO}" = "y" ]; then
465 extra_config+=("--with-libelf=${CT_COMPLIBS_DIR}")
466 elif [ "${CT_CC_GCC_HAS_LTO}" = "y" ]; then
467 extra_config+=("--with-libelf=no")
470 if [ "${CT_THREADS}" = "none" ]; then
471 extra_config+=("--disable-threads")
472 if [ "${CT_CC_GCC_4_2_or_later}" = y ]; then
473 CT_Test "Disabling libgomp for no-thread gcc>=4.2" "${CT_CC_GCC_LIBGOMP}" = "Y"
474 extra_config+=("--disable-libgomp")
477 if [ "${CT_THREADS}" = "win32" ]; then
478 extra_config+=("--enable-threads=win32")
479 extra_config+=("--disable-win32-registry")
481 extra_config+=("--enable-threads=posix")
485 if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
486 extra_config+=("--enable-target-optspace")
488 if [ "${CT_CC_GCC_DISABLE_PCH}" = "y" ]; then
489 extra_config+=("--disable-libstdcxx-pch")
492 case "${CT_CC_GCC_LDBL_128}" in
493 y) extra_config+=("--with-long-double-128");;
495 "") extra_config+=("--without-long-double-128");;
498 if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
499 extra_config+=( --enable-plugin )
501 if [ "${CT_CC_GCC_GOLD}" = "y" ]; then
502 extra_config+=( --enable-gold )
505 CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
507 # --enable-symvers=gnu really only needed for sh4 to work around a
508 # detection problem only matters for gcc-3.2.x and later, I think.
509 # --disable-nls to work around crash bug on ppc405, but also because
510 # embedded systems don't really need message catalogs...
511 CC_FOR_BUILD="${CT_BUILD}-gcc" \
512 CFLAGS="${CT_CFLAGS_FOR_HOST}" \
513 LDFLAGS="${final_LDFLAGS[*]}" \
514 CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}" \
515 CXXFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS}" \
516 LDFLAGS_FOR_TARGET="${CT_TARGET_LDFLAGS}" \
518 "${CT_SRC_DIR}/gcc-${CT_CC_VERSION}/configure" \
519 --build=${CT_BUILD} \
521 --target=${CT_TARGET} \
522 --prefix="${CT_PREFIX_DIR}" \
524 "${extra_config[@]}" \
525 --with-local-prefix="${CT_SYSROOT_DIR}" \
527 --enable-symvers=gnu \
530 ${CT_CC_EXTRA_CONFIG}
532 if [ "${CT_CANADIAN}" = "y" ]; then
533 CT_DoLog EXTRA "Building libiberty"
534 CT_DoExecLog ALL make ${JOBSFLAGS} all-build-libiberty
537 CT_DoLog EXTRA "Building final compiler"
538 CT_DoExecLog ALL make ${JOBSFLAGS} all
540 CT_DoLog EXTRA "Installing final compiler"
541 CT_DoExecLog ALL make install
543 # Create a symlink ${CT_TARGET}-cc to ${CT_TARGET}-gcc to always be able
544 # to call the C compiler with the same, somewhat canonical name.
545 # check whether compiler has an extension
546 file="$( ls -1 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-gcc."* 2>/dev/null || true )"
547 [ -z "${file}" ] || ext=".${file##*.}"
548 CT_DoExecLog ALL ln -sv "${CT_TARGET}-gcc${ext}" "${CT_PREFIX_DIR}/bin/${CT_TARGET}-cc${ext}"