5.1.1: Test fail in t-aors_1 on Solaris x86 64bit w/ Sun Studio 12.3 compiler

Torbjorn Granlund tg at gmplib.org
Thu Jan 9 09:42:41 UTC 2014

You override a whole lot of logics for the configuration.  Do you do
that for some specific reason?  It's a difficult task to analyse your
many parameters for consistency.

The error is as far as I can tell completely related to plain C code.
I'd point finger to either parameter inconsistency or bugs with this
compiler (or perhaps assembler, linker).

  configure: summary of build options:

    Version:           GNU MP 5.1.1
    Host type:         x86_64-pc-solaris2.11
    ABI:               64
    Install prefix:    /gmp
    Compiler:          cc -m64
    Static libraries:  yes
    Shared libraries:  yes

Curious Install prefix.

  build11i64:/var/tmp/gmp-5.1.1/tests/mpn root# file *.o
  logic.o:        ELF 64-bit LSB relocatable AMD64 Version 1 [SSE2 CMOV]
  t-aors_1.o:     ELF 64-bit LSB relocatable AMD64 Version 1 [SSE2 SSE CMOV]
  t-asmtype.o:    ELF 64-bit LSB relocatable AMD64 Version 1
  t-bdiv.o:       ELF 64-bit LSB relocatable AMD64 Version 1 [SSE2 SSE CMOV]
  The simple cause is the -DDBUG_OFF on CFLAGS, I haven't dug through the
  code to find the root cause, it's just being reported here as an issue,
  possibly hiding a bug deeper in the code. I used the -DDBUG_OFF previously
  for the SPARC compiling, it causes problems for x86.
I'm afraid I cannot follow your reasoning here.
  As an aside, the compiler attribute check for "mode" doesn't work so well,
  I need to give gmp_cv_c_attribute_mode=no to configure.
  configure:25360: checking whether gcc __attribute__ ((mode (XX))) works
  configure:25376: cc -m64 -c -xO3 -m64 -DNO_ASM -I/usr/local/include
  conftest.c >&5
  "conftest.c", line 60: warning:  attribute "mode" is unknown, ignored
  configure:25376: $? = 0
  configure:25384: result: yes
Yep, the compiler gives a warning instead of an error for syntax it
doesn't handle.  Autoconf then concludes it is safe to use.  (And
perhaps it is safe to use, just triggering annoying verbiage?)

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