[PATCH] sim: mips/ppc/riscv: re-add AC_CANONICAL_SYSTEM [PR sim/29439]

[Jan-Benedict Glaw]

On Sun, 2022-10-23 22:56:47 +0545, Mike Frysinger via Gdb-patches <gdb-patches@sourceware.org> wrote:
> These configure scripts check $target and change behavior.  They
> shouldn't be doing that, but until we can rework the sim to change
> behavior based on the input ELF, restore AC_CANONICAL_SYSTEM to
> these so that $target is correctly populated.
> 
> This was lost in the d3562f83a7b8a1ae6e333cd5561419d3da18fcb4
> ("sim: unify toolchain probing logic") refactor as the logic was
> hoisted up to the common code.  But the fact the vars weren't
> passed down to the sub-configure scripts was missed.
> 
> Bug: https://sourceware.org/PR29439

This fix seems to have a side effect:

.../configure --prefix=/tmp/gdb-mipsisa64sb1-elf --target=mipsisa64sb1-elf

make V=1 all-gdb
[...]
[all 2023-03-03 21:07:56] /usr/lib/gcc-snapshot/bin/gcc  -DHAVE_CONFIG_H -DWITH_TARGET_WORD_BITSIZE=64 -DWITH_TARGET_WORD_MSB=63 -DWITH_FLOATING_POINT=HARD_FLOATING_POINT -DWITH_TARGET_FLOATING_POINT_BITSIZE=64 -DWITH_HW=1 -DHAVE_DV_SOCKSER -DDEFAULT_INLINE=0 -Wall -Wdeclaration-after-statement -Wpointer-arith -Wno-unused -Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body -Wunused-but-set-parameter -Wno-error=maybe-uninitialized -Wmissing-declarations -Wmissing-prototypes -Wdeclaration-after-statement -Wmissing-parameter-type -Wpointer-sign -Wold-style-declaration -Werror  -I. -I/var/lib/laminar/run/gdb-mipsisa64sb1-elf/51/binutils-gdb/sim/mips -I../common -I/var/lib/laminar/run/gdb-mipsisa64sb1-elf/51/binutils-gdb/sim/mips/../common -I../../include -I/var/lib/laminar/run/gdb-mipsisa64sb1-elf/51/binutils-gdb/sim/mips/../../include -I../../bfd -I/var/lib/laminar/run/gdb-mipsisa64sb1-elf/51/binutils-gdb/sim/mips/../../bfd -I../../opcodes -I/var/lib/laminar/run/gdb-mipsisa64sb1-elf/51/binutils-gdb/sim/mips/../../opcodes -I../..  -I/var/lib/laminar/run/gdb-mipsisa64sb1-elf/51/binutils-gdb/sim/mips/../../gnulib/import -I../../gnulib/import -DTARGET_ENABLE_FR=1 -DMIPS_MACH_DEFAULT=bfd_mach_mips_sb1 -g -O2   -c -o semantics.o -MT semantics.o -MMD -MP -MF .deps/semantics.Tpo semantics.c
[all 2023-03-03 21:07:56] sb1.igen: In function 'semantic_PABSDIFC_fmt_MDMX':
[all 2023-03-03 21:07:56] sb1.igen:178:21: error: unknown conversion type character 'v' in format [-Werror=format=]
[all 2023-03-03 21:07:56]   178 |   check_mdmx (SD_, instruction_0);
[all 2023-03-03 21:07:56]       |                     ^~~~~~~~~~~~~~        
[all 2023-03-03 21:07:56] sb1.igen:178:21: error: format '%ld' expects argument of type 'long int', but argument 9 has type 'unsigned int' [-Werror=format=]
[all 2023-03-03 21:07:56]   178 |   check_mdmx (SD_, instruction_0);
[all 2023-03-03 21:07:56]       |                     ^~~~~~~~~~~~~~        
[all 2023-03-03 21:07:56] sb1.igen:178:21: error: too many arguments for format [-Werror=format-extra-args]
[all 2023-03-03 21:08:05] cc1: all warnings being treated as errors

Sorry for taking so long to report it.

MfG, JBG

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