The following commands were used to build gcc-8.3.0:
export CFLAGS_FOR_TARGET="-g -fdata-sections -ffunction-sections
-Wl,--gc-sections -save-temps -fverbose-asm"
./gcc/configure --target=myarch-elf --prefix=/opt/myarch-toolchain
--with-newlib --disable-libssp --enable-lto
make && sudo make install
Note that building GCC with C-only and building Newlib succeeded; here
I was rebuilding GCC without --enable-language=c .
../../../gcc/libbacktrace/elf.c: In function ‘elf_zlib_inflate’:
../../../gcc/libbacktrace/elf.c:2041:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = prev;
~~~~~~~~^~~~~~
../../../gcc/libbacktrace/elf.c:2043:4: note: here
case 5:
^~~~
../../../gcc/libbacktrace/elf.c:2044:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = prev;
~~~~~~~~^~~~~~
../../../gcc/libbacktrace/elf.c:2046:4: note: here
case 4:
^~~~
../../../gcc/libbacktrace/elf.c:2075:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = 0;
~~~~~~~~^~~
../../../gcc/libbacktrace/elf.c:2077:4: note: here
case 9:
^~~~
../../../gcc/libbacktrace/elf.c:2078:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = 0;
~~~~~~~~^~~
../../../gcc/libbacktrace/elf.c:2080:4: note: here
case 8:
^~~~
../../../gcc/libbacktrace/elf.c:2081:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = 0;
~~~~~~~~^~~
../../../gcc/libbacktrace/elf.c:2083:4: note: here
case 7:
^~~~
../../../gcc/libbacktrace/elf.c:2084:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = 0;
~~~~~~~~^~~
../../../gcc/libbacktrace/elf.c:2086:4: note: here
case 6:
^~~~
../../../gcc/libbacktrace/elf.c:2087:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = 0;
~~~~~~~~^~~
../../../gcc/libbacktrace/elf.c:2089:4: note: here
case 5:
^~~~
../../../gcc/libbacktrace/elf.c:2090:14: error: this statement may
fall through [-Werror=implicit-fallthrough=]
*plen++ = 0;
~~~~~~~~^~~
../../../gcc/libbacktrace/elf.c:2092:4: note: here
case 4:
^~~~
cc1: all warnings being treated as errors
Makefile:528: recipe for target 'elf.lo' failed
make[3]: *** [elf.lo] Error 1
