I build baremetal crosscompiler for Symbian. That means no libc used in any way. For Symbian libc is usual library. It has two libc ports for now.
Here build config:
export TARGET=arm-none-symbianelf
# Installation folder
export GCCC=gcc-11.2.0
# needed enviroment-free statically linked GCC
ICONV=--with-libiconv-prefix=/usr/local
export PREFIX=/usr/local/$GCCC
export PATH=$PATH:$PREFIX/bin
unset CFLAGS
export CFLAGS+="-pipe -Wl,-Bstatic"
MAKEJOBS=-j"${NUMBER_OF_PROCESSORS}"
#set SHELL=cmd.exe allow parallel build on windows
set SHELL=cmd.exe
cd build-gcc
../$GCCC/./configure --target=$TARGET --prefix=$PREFIX --without-headers \
--enable-languages="c,c++,lto" --enable-poison-system-directories \
--enable-lto --with-newlib --enable-long-long $ICONV \
--with-dwarf2 --enable-interwork --enable-tls --enable-multilib \
--disable-hosted-libstdcxx --disable-libstdcxx-pch \
--disable-option-checking --disable-threads --disable-nls \
--disable-win32-registry --disable-libssp --disable-shared \
--enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99 \
--with-static-standard-libraries
make $MAKEJOBS -k 2> make-gcc.log
make -k install-strip 2> install-gcc.log
Here full list warnings and error while build GCC for Symbian:
1. configure: WARNING: using in-tree isl, disabling version check(long ago, maybe even 5.4.0)
2. After several minutes build hang if "make -jX" used(long ago, maybe even 5.4.0). One make.exe uses cpu other don't. Build continues immediatly if right make killed. Windows itself response ok. Log before hang:
checking for fprintf_unlocked... make[2]: Leaving directory `/d/mbuild/src/build-gcc/libiberty'
no
checking for fputc_unlocked... gcc -c -pipe -Wl,-Bstatic -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-form
at-attribute -Wno-overlength-strings -pedantic -Wno-long-long -DHAVE_CONFIG_H -I. -I../../../gcc-11.2.0/./fixincludes -I../include -I../../../gcc-11.2.0/./fixincludes/../include ../../../gcc-11.2.0/./fixincludes/fixlib.c
gcc -c -pipe -Wl,-Bstatic -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wno-overlength-strings -pedantic -Wno-long-long -DHAVE_CONFIG_H -I. -I../../../gcc-11.2.0/./fixincludes -I../include -I../../../gcc-11.2.0/./fixincludes/../include ../../../gcc-11.2.0/./fixincludes/fixtests.c
no
gcc -c -pipe -Wl,-Bstatic -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wno-overlength-strings -pedantic -Wno-long-long -DHAVE_CONFIG_H -I. -I../../../gcc-11.2.0/./fixincludes -I../include -I../../../gcc-11.2.0/./fixincludes/../include ../../../gcc-11.2.0/./fixincludes/fixopts.c
checking for fputs_unlocked... gcc -c -pipe -Wl,-Bstatic -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wno-overlength-strings -pedantic -Wno-long-long -DHAVE_CONFIG_H -I. -I../../../gcc-11.2.0/./fixincludes -I../include -I../../../gcc-11.2.0/./fixincludes/../include ../../../gcc-11.2.0/./fixincludes/fixfixes.c
make[2]: Entering directory `/d/mbuild/src/build-gcc/build-i686-pc-mingw32/libcpp'
g++ -I../../../gcc-11.2.0/./libcpp -I. -I../../../gcc-11.2.0/./libcpp/../include -I../../../gcc-11.2.0/./libcpp/include -g -O2 -D__USE_MINGW_ACCESS -W -Wall -Wno-narrowing -Wwrite-strings -Wmissing-format-attribute -pedantic -Wno-long-long -fno-exceptions -fno-rtti -I../../../gcc-11.2.0/./libcpp -I. -I../../../gcc-11.2.0/./libcpp/../include -I../../../gcc-11.2.0/./libcpp/include -c -o charset.o -MT charset.o -MMD -MP -MF .deps/charset.Tpo ../../../gcc-11.2.0/./libcpp/charset.c
no
gcc `test -f 'gen-fib.c' || echo '../../gcc-11.2.0/./gmp/'`gen-fib.c -o gen-fib.exe
checking for fread_unlocked... srcdir="../../../gcc-11.2.0/./fixincludes" /bin/sh ../../../gcc-11.2.0/./fixincludes/mkfixinc.sh arm-none-symbianelf
no
checking for fwrite_unlocked... sed -e 's/@gcc_version@/11.2.0/' < mkheaders.almost > mkheadersT
mv -f mkheadersT mkheaders
gcc -pipe -Wl,-Bstatic -o fixincl.exe fixincl.o fixlib.o fixtests.o fixopts.o ../libiberty/libiberty.a
no
echo timestamp > test-stamp
checking for getchar_unlocked... gcc -pipe -Wl,-Bstatic -o applyfix.exe fixfixes.o fixlib.o fixopts.o ../libiberty/libiberty.a
make[2]: Leaving directory `/d/mbuild/src/build-gcc/build-i686-pc-mingw32/fixincludes'
no
gcc `test -f 'gen-bases.c' || echo '../../gcc-11.2.0/./gmp/'`gen-bases.c -o gen-bases.exe -lm
checking for getc_unlocked... no
checking for putchar_unlocked... no
checking for putc_unlocked... no
checking whether abort is declared... yes
checking whether asprintf is declared... no
checking whether basename is declared... no
checking whether errno is declared... yes
checking whether getopt is declared... yes
checking whether vasprintf is declared... no
checking whether clearerr_unlocked is declared... no
checking whether feof_unlocked is declared... no
checking whether ferror_unlocked is declared... no
checking whether fflush_unlocked is declared... no
checking whether fgetc_unlocked is declared... no
checking whether fgets_unlocked is declared... no
checking whether fileno_unlocked is declared... no
checking whether fprintf_unlocked is declared... no
checking whether fputc_unlocked is declared... no
checking whether fputs_unlocked is declared... no
checking whether fread_unlocked is declared... no
checking whether fwrite_unlocked is declared... no
checking whether getchar_unlocked is declared... no
checking whether getc_unlocked is declared... no
checking whether putchar_unlocked is declared... no
checking whether putc_unlocked is declared... no
checking for working alloca.h... no
checking for alloca... yes
checking for ANSI C header files... (cached) yes
checking for nl_langinfo and CODESET... no
checking whether NLS is requested... no
checking for uchar...
checking for ld used by GCC... d:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe
checking if the linker (d:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe) is GNU ld... yes
checking for shared library run path origin... done
checking for iconv... yes
checking how to link with libiconv... /usr/local/lib/libiconv.a
checking for iconv declaration...
extern size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
checking for CET support... no
configure: updating cache ./config.cache
configure: creating ./config.status
config.status: creating Makefile
config.status: creating config.h
config.status: executing depdir commands
mkdir -p -- .deps
3. Many warnings for every file:
../../gcc-11.2.0/./gcc/mem-stats.h:215:72: warning: ISO C++11 does not support the 'I64' ms_printf length modifier [-Wformat=]
get_percent (m_times, total.m_times), loc->m_ggc ? "ggc" : "heap");
../../gcc-11.2.0/./gcc/pretty-print.h: In function 'void pp_wide_integer(pretty_printer*, long long int)':
../../gcc-11.2.0/./gcc/pretty-print.h:329:60: warning: ISO C++11 does not support the 'I64' ms_printf length modifier [-Wformat=]
sprintf (pp_buffer (PP)->digit_buffer, FORMAT, SCALAR); \
../../gcc-11.2.0/./gcc/alloc-pool.h:76:31: warning: ISO C++11 does not support the 'I64' ms_printf length modifier [-Wformat=]
../../gcc-11.2.0/./gcc/bitmap.h:252:34: warning: ISO C++11 does not support the 'I64' ms_printf length modifier [-Wformat=]
../../gcc-11.2.0/./gcc/lto-streamer.c:179:42: warning: ISO C++11 does not support the 'I64' ms_printf length modifier [-Wformat=]
4. got build-gcc\mpfr\src\.libs\mpfr.a but has in logs:
configure:14288: error: possibly undefined macro: AX_PTHREAD
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
make[2]: *** [../../gcc-11.2.0/./mpfr/configure] Error 1
make[2]: Failed to remake makefile `Makefile'.
libtool: warning: undefined symbols not allowed in i686-pc-mingw32 shared libraries; building static only
make[1]: *** [all-mpfr] Error 2
make[1]: Target `all-host' not remade because of errors.
make[1]: Target `all-target' not remade because of errors.
make: *** [all] Error 2
5. Another hang in libgcc if "make -jX":
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIHA.o -MT _fractunsUDIHA.o -MD -MP -MF _fractunsUDIHA.dep -DL_fractuns -DFROM_UDI -DTO_HA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/-isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDISA.o -MT _fractunsUDISA.o -MD -MP -MF _fractunsUDISA.dep -DL_fractuns -DFROM_UDI -DTO_SA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIDA.o -MT _fractunsUDIDA.o -MD -MP -MF _fractunsUDIDA.dep -DL_fractuns -DFROM_UDI -DTO_DA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -march=armv5te+fp -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../../.././gcc -I../../../../gcc-11.2.0/./libgcc -I../../../../gcc-11.2.0/./libgcc/. -I../../../../gcc-11.2.0/./libgcc/../gcc -I../../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUQIUDA.o -MT _fractunsUQIUDA.o -MD -MP -MF _fractunsUQIUDA.dep -DL_fractuns -DFROM_UQI -DTO_UDA -c ../../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDITA.o -MT _fractunsUDITA.o -MD -MP -MF _fractunsUDITA.dep -DL_fractuns -DFROM_UDI -DTO_TA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUQQ.o -MT _fractunsUDIUQQ.o -MD -MP -MF _fractunsUDIUQQ.dep -DL_fractuns -DFROM_UDI -DTO_UQQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUHQ.o -MT _fractunsUDIUHQ.o -MD -MP -MF _fractunsUDIUHQ.dep -DL_fractuns -DFROM_UDI -DTO_UHQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -march=armv5te+fp -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../../.././gcc -I../../../../gcc-11.2.0/./libgcc -I../../../../gcc-11.2.0/./libgcc/. -I../../../../gcc-11.2.0/./libgcc/../gcc -I../../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUQIUTA.o -MT _fractunsUQIUTA.o -MD -MP -MF _fractunsUQIUTA.dep -DL_fractuns -DFROM_UQI -DTO_UTA -c ../../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUSQ.o -MT _fractunsUDIUSQ.o -MD -MP -MF _fractunsUDIUSQ.dep -DL_fractuns -DFROM_UDI -DTO_USQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUDQ.o -MT _fractunsUDIUDQ.o -MD -MP -MF _fractunsUDIUDQ.dep -DL_fractuns -DFROM_UDI -DTO_UDQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUTQ.o -MT _fractunsUDIUTQ.o -MD -MP -MF _fractunsUDIUTQ.dep -DL_fractuns -DFROM_UDI -DTO_UTQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -march=armv5te+fp -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../../.././gcc -I../../../../gcc-11.2.0/./libgcc -I../../../../gcc-11.2.0/./libgcc/. -I../../../../gcc-11.2.0/./libgcc/../gcc -I../../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUHIQQ.o -MT _fractunsUHIQQ.o -MD -MP -MF _fractunsUHIQQ.dep -DL_fractuns -DFROM_UHI -DTO_QQ -c ../../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUHA.o -MT _fractunsUDIUHA.o -MD -MP -MF _fractunsUDIUHA.dep -DL_fractuns -DFROM_UDI -DTO_UHA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUSA.o -MT _fractunsUDIUSA.o -MD -MP -MF _fractunsUDIUSA.dep -DL_fractuns -DFROM_UDI -DTO_USA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUDA.o -MT _fractunsUDIUDA.o -MD -MP -MF _fractunsUDIUDA.dep -DL_fractuns -DFROM_UDI -DTO_UDA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -march=armv5te+fp -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../../.././gcc -I../../../../gcc-11.2.0/./libgcc -I../../../../gcc-11.2.0/./libgcc/. -I../../../../gcc-11.2.0/./libgcc/../gcc -I../../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o_fractunsUHIHQ.o -MT _fractunsUHIHQ.o -MD -MP -MF _fractunsUHIHQ.dep -DL_fractuns -DFROM_UHI -DTO_HQ -c ../../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUDIUTA.o -MT _fractunsUDIUTA.o -MD -MP -MF _fractunsUDIUTA.dep -DL_fractuns -DFROM_UDI -DTO_UTA -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUTIQQ.o -MT _fractunsUTIQQ.o -MD -MP -MF _fractunsUTIQQ.dep -DL_fractuns -DFROM_UTI -DTO_QQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
/d/mbuild/src/build-gcc/./gcc/xgcc -B/d/mbuild/src/build-gcc/./gcc/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/bin/ -B/usr/local/gcc-11.2.0/arm-none-symbianelf/lib/ -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/include -isystem /usr/local/gcc-11.2.0/arm-none-symbianelf/sys-include -g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fno-inline -I. -I. -I../.././gcc -I../../../gcc-11.2.0/./libgcc -I../../../gcc-11.2.0/./libgcc/. -I../../../gcc-11.2.0/./libgcc/../gcc -I../../../gcc-11.2.0/./libgcc/../include -DHAVE_CC_TLS -o _fractunsUTIHQ.o -MT _fractunsUTIHQ.o -MD -MP -MF _fractunsUTIHQ.dep -DL_fractuns -DFROM_UTI -DTO_HQ -c ../../../gcc-11.2.0/./libgcc/fixed-bit.c -fvisibility=hidden -DHIDE_EXPORTS
6. Bunch warnings and errors:
/bin/install: cannot stat `crtfastmath.o': No such file or directory
configure: WARNING: No native atomic operations are provided for this platform.
configure: WARNING: They cannot be faked when thread support is disabled.
configure: WARNING: Thread-safety of certain classes is not guaranteed.
configure: WARNING: stdbool.h: present but cannot be compiled
configure: WARNING: stdbool.h: check for missing prerequisite headers?
configure: WARNING: stdbool.h: see the Autoconf documentation
configure: WARNING: stdbool.h: section "Present But Cannot Be Compiled"
configure: WARNING: stdbool.h: proceeding with the compiler's result
configure: WARNING: stdalign.h: present but cannot be compiled
configure: WARNING: stdalign.h: check for missing prerequisite headers?
configure: WARNING: stdalign.h: see the Autoconf documentation
configure: WARNING: stdalign.h: section "Present But Cannot Be Compiled"
configure: WARNING: stdalign.h: proceeding with the compiler's result
configure: error: computing EOF failed
make[1]: *** [configure-target-libstdc++-v3] Error 1
make[1]: Target `all-target' not remade because of errors.
make: *** [all] Error 2
7. Errors for computing EOF, SEEK_CUR, and SEEK_END:
checking for the value of EOF... configure: error: computing EOF failed
make: *** [configure-target-libstdc++-v3] Error 1
Why they needed in bare metal compiler?
8. Errors in main configure due unguarded "#include <stdio.h>":
checking size of void *... 0
checking size of long... 0
checking size of int... 0
checking size of short... 0
checking size of char... 0
checking for type equivalent to int8_t... configure: error: no 8-bit type, please report a bug
make: *** [configure-target-libstdc++-v3] Error 1
Proposed solution: guard against unaviable "#include <stdio.h>".
9. Errors when build libsupc++:
make install-strip-target-libstdc++-v3
../../../../gcc-11.2.0/./libstdc++-v3/libsupc++/new_opa.cc:28:10: fatal error: stdint.h: No such file or directory
28 | #include <stdint.h>
| ^~~~~~~~~~
compilation terminated.
make[3]: *** [new_opa.lo] Error 1
My solution: copy gstdint.h to installed gcc-11.2.0\arm-none-symbianelf\sys-include
--
Fiodar Stryzhnoiu <fedor_qd@xxxxxxx>
