On Mon, 25 Oct 2021, 21:42 Tammo Tjarks, <tammo@xxxxxxxxxxxxxxx> wrote:
> Dear GCC community,
>
> when I try to compile a 11 Version of GCC I get while compiling in the
> directory
> …./gcc-11.2.0/host-x86_64-pc-linux-gnu/gcc
> the following:
>
How are you configuring GCC? What is your OS?
Everybody else can compile GCC 11.2.0 so something odd is happening for you.
x86_64-pc-linux-gnu-g++ -std=c++11 -fno-PIE ….. ../.././gcc/cp/g++spec.c
> error occurs:
> x86_64-pc-linux-gnu-g++: fatal error: unknown spec function 'dumps'
> compilation terminated.
>
> I looked into the spec-file in that directory. There is the entry:
> *cpp_debug_options:
> %<dumpdir %<dumpbase %<dumpbase-ext %{d*} %:dumps()
>
> When I change it to the entry as in GCC 10.3:
> *cpp_debug_options:
> %{d*}
>
> the compile runs through even so in the end, the specs file seems to be
> overwritten again.
>
> I have seen, that this arguments are defined inside ../gcc/gcc.c. I see
> there for
> gcc 11.2:
>
> Gcc-11.2/gcc/gcc.c
> 1253 – 1262:
> /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al.
> Make it easy for a language to override the argument for the
> %:dumps specs function call. */
> #define DUMPS_OPTIONS(EXTS) \
> "%<dumpdir %<dumpbase %<dumpbase-ext %{d*} %:dumps(" EXTS ")"
>
> /* This contains cpp options which are not passed when the preprocessor
> output will be used by another program. */
> static const char *cpp_debug_options = DUMPS_OPTIONS ("");
>
> While I see in 10.3:
> Gcc-10.3/gcc/gcc.c
> 1142 :
> /* This contains cpp options which are not passed when the preprocessor
> output will be used by another program. */
> static const char *cpp_debug_options = "%{d*}";
>
>
> Still have no clue where this dumps is defined. But when I patch the
> g++spec.c manully and restart compilation, the compilation runs through. My
> best guess is, that it is not defined inside 10.3 and in the first
> compilation with 10.3 it fails.
> Is there a clean solution to solve this (unclean solution would be to
> patch gcc.c or to hack the spec-file when it fails and restart compile)?
> Where is this dumps defined? Are some prerequisites missing?
>
> Best regards,
> Tammo
>
>
