Can't compile GCC-14 for AVR

[Levente <leventelist@gmail.com>]

I'm trying to set up a toolchain for avr-dd MCUs, and I get this error 
message when I try to compile gcc:


/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/./gcc/xgcc 
-B/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/./gcc/ 
-B/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/bin/ 
-B/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/lib/ 
-isystem 
/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/include 
-isystem 
/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/sys-include 
    -g -O2 -mdouble=64 -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 
-Dinhibit_libc -mcall-prologues -Os -g -DIN_LIBGCC2 -fbuilding-libgcc 
-fno-stack-protector -Dinhibit_libc -Dinhibit_libc -mcall-prologues -Os 
-I. -I. -I../../.././gcc -I../../../../libgcc -I../../../../libgcc/. 
-I../../../../libgcc/../gcc -I../../../../libgcc/../include 
-DHAVE_CC_TLS -DUSE_EMUTLS  -o hardcfr.o -MT hardcfr.o -MD -MP -MF 
hardcfr.dep  -c ../../../../libgcc/hardcfr.c -fvisibility=hidden 
-DHIDE_EXPORTS
/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/./gcc/xgcc 
-B/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/./gcc/ 
-B/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/bin/ 
-B/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/lib/ 
-isystem 
/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/include 
-isystem 
/home/lev/git/library/software/scripts/avr_toolchain_build/out/avr/sys-include 
    -g -O2 -mdouble=64 -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 
-Dinhibit_libc -mcall-prologues -Os -g -DIN_LIBGCC2 -fbuilding-libgcc 
-fno-stack-protector -Dinhibit_libc -Dinhibit_libc -mcall-prologues -Os 
-I. -I. -I../../.././gcc -I../../../../libgcc -I../../../../libgcc/. 
-I../../../../libgcc/../gcc -I../../../../libgcc/../include 
-DHAVE_CC_TLS -DUSE_EMUTLS  -o strub.o -MT strub.o -MD -MP -MF strub.dep 
  -c ../../../../libgcc/strub.c -fvisibility=hidden -DHIDE_EXPORTS
../../../../libgcc/strub.c:95:1: internal compiler error: 
'global_options' are modified in local context
    95 | {
       | ^
0xdc6e93 cl_optimization_compare(gcc_options*, gcc_options*)
	/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/gcc/options-save.cc:13442
0x96537c handle_optimize_attribute
	../../gcc/c-family/c-attribs.cc:5983
0x840c04 decl_attributes(tree_node**, tree_node*, int, tree_node*)
	../../gcc/attribs.cc:905
0x847559 c_decl_attributes
	../../gcc/c/c-decl.cc:5495
0x85f4db start_function(c_declspecs*, c_declarator*, tree_node*)
	../../gcc/c/c-decl.cc:10433
0x8cb731 c_parser_declaration_or_fndef
	../../gcc/c/c-parser.cc:2912
0x8d6873 c_parser_external_declaration
	../../gcc/c/c-parser.cc:2046
0x8d72b3 c_parser_translation_unit
	../../gcc/c/c-parser.cc:1900
0x8d72b3 c_parse_file()
	../../gcc/c/c-parser.cc:26815
0x94bf11 c_common_parse_file()
	../../gcc/c-family/c-opts.cc:1301
Please submit a full bug report, with preprocessed source (by using 
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make[4]: *** [../../../../libgcc/static-object.mk:17: strub.o] Error 1
make[4]: Leaving directory 
'/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/avr/double64/libgcc'
make[3]: *** [Makefile:1221: multi-do] Error 1
make[3]: Leaving directory 
'/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/avr/libgcc'
make[2]: *** [Makefile:127: all-multi] Error 2
make[2]: Leaving directory 
'/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr/avr/libgcc'
make[1]: *** [Makefile:13076: all-target-libgcc] Error 2
make[1]: Leaving directory 
'/home/lev/git/library/software/scripts/avr_toolchain_build/gcc/obj-avr'
make: *** [Makefile:1039: all] Error 2


This is with the current HEAD of master branch.
I'm on a Debian stable, my host gcc is gcc-12.
My binutils is gdb-14.1-release.

My configure options are:
--target=avr
         --enable-languages=c,c++
         --disable-nls
         --disable-libssp
         --disable-libada
         --with-dwarf2
         --disable-shared
         --enable-static
         --enable-mingw-wildcard
         --enable-plugin
         --with-gnu-as


What do I do wrong?


Thanks,
Lev


-- 
Levente Kovacs
Senior Electronic Engineer

W: http://levente.logonex.eu