Hi, I have to port GCC on a new arch. I'm working on an i686-pc-linux-gnu machine so it is cross-compilation. I read tutorials from IIT of Bombay. I read parts of GCC Internals. I'm working with gcc-4.3.3 sources. The binutils are already installed in /home/me/target/. I am now debugging my cc1 with GDB. I try to compile an empty file this way : gdb /home/me/target/libexec/gcc/target/4.3.3/cc1 -x command.gdb ... run -quiet -v a.c -quiet -dumpbase a.c -da -auxbase a -version -o a.s where a.c is an empty file. Process stops with Program received signal SIGSEGV, Segmentation fault. builtin_define_float_constants (name_prefix=0x83fcaf9 "FLT", fp_suffix=0x8419523 "F", fp_cast=0x84109dd "%s", type=0xb7d01410) at ../../gcc-4.3.3/gcc/c-cppbuiltin.c:108 108 gcc_assert (fmt->b != 10); and the back trace is (gdb) bt #0 builtin_define_float_constants (name_prefix=0x83fcaf9 "FLT", fp_suffix=0x8419523 "F", fp_cast=0x84109dd "%s", type=0xb7d01410) at ../../gcc-4.3.3/gcc/c-cppbuiltin.c:108 #1 0x08090324 in c_cpp_builtins (pfile=0x9dd56d0) at ../../gcc-4.3.3/gcc/c-cppbuiltin.c:508 #2 0x08087809 in finish_options () at ../../gcc-4.3.3/gcc/c-opts.c:1508 #3 0x08087a15 in c_common_parse_file (set_yydebug=0) at ../../gcc-4.3.3/gcc/c-opts.c:1288 #4 0x08202297 in toplev_main (argc=13, argv=0xbfb38404) at ../../gcc-4.3.3/gcc/toplev.c:1042 #5 0x080a47d2 in main (argc=788558629, argv=0x66006425) at ../../gcc-4.3.3/gcc/main.c:35 Does it deal with macros in target.h ? My target machine doesn't support floats operations so I defined these macros : #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT #undef TARGET_DECIMAL_FLOAT_SUPPORTED_P #define TARGET_DECIMAL_FLOAT_SUPPORTED_P target_decimal_float_supported_p // returns always false #undef TARGET_FIXED_POINT_SUPPORTED_P #define TARGET_FIXED_POINT_SUPPORTED_P target_fixed_point_supported_p // returns always false and that's all about floats. What should I additionally implement ? Thank you. Florent
