diff options
| author |   Keith Packard <keithp@keithp.com> | 2021-01-12 06:28:38 (GMT) |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2021-01-12 07:29:01 (GMT) |
| commit | 27b18d2fc70a7788c97f57a02a768214a2548ee0 (patch) | |
| tree | 369633156cecebec9fae686eec418e94fb148711 /scripts/build | |
| parent | 43f50793826918f78b79d2e8197da4e58bdf6748 (diff) | |
picolibc: Build libstdc++ against picolibc if requested
This uses the gcc support for building libstdc++ using alternate lib
header files.
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'scripts/build')
| -rw-r--r-- | scripts/build/companion_libs/340-picolibc.sh | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/scripts/build/companion_libs/340-picolibc.sh b/scripts/build/companion_libs/340-picolibc.sh index c0128c1..525497a 100644 --- a/scripts/build/companion_libs/340-picolibc.sh +++ b/scripts/build/companion_libs/340-picolibc.sh @@ -22,6 +22,50 @@ do_picolibc_extract() { CT_ExtractPatch PICOLIBC } +#------------------------------------------------------------------------------ +# Build an additional target libstdc++ with "-Os" (optimise for speed) option +# flag for libstdc++ "picolibc" variant. +do_cc_libstdcxx_picolibc() +{ + local -a final_opts + local final_backend + + if [ "${CT_LIBC_PICOLIBC_GCC_LIBSTDCXX}" = "y" ]; then + final_opts+=( "host=${CT_HOST}" ) + final_opts+=( "libstdcxx_name=picolibc" ) + final_opts+=( "prefix=${CT_PREFIX_DIR}" ) + final_opts+=( "complibs=${CT_HOST_COMPLIBS_DIR}" ) + final_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" ) + final_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" ) + final_opts+=( "lang_list=c,c++" ) + final_opts+=( "build_step=libstdcxx" ) + final_opts+=( "extra_config+=('--enable-stdio=stdio_pure')" ) + if [ "${CT_LIBC_PICOLIBC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then + final_opts+=( "enable_optspace=yes" ) + fi + + if [ "${CT_BARE_METAL}" = "y" ]; then + final_opts+=( "mode=baremetal" ) + final_opts+=( "build_libgcc=yes" ) + final_opts+=( "build_libstdcxx=yes" ) + final_opts+=( "build_libgfortran=yes" ) + if [ "${CT_STATIC_TOOLCHAIN}" = "y" ]; then + final_opts+=( "build_staticlinked=yes" ) + fi + final_backend=do_gcc_core_backend + else + final_backend=do_gcc_backend + fi + + CT_DoStep INFO "Installing libstdc++ picolibc" + CT_mkdir_pushd "${CT_BUILD_DIR}/build-cc-libstdcxx-picolibc" + "${final_backend}" "${final_opts[@]}" + CT_Popd + + CT_EndStep + fi +} + do_picolibc_for_target() { local -a picolibc_opts local cflags_for_target @@ -119,6 +163,8 @@ EOF CT_Popd CT_EndStep + + do_cc_libstdcxx_picolibc } fi |