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set flags based on compiler version?


From: Tim Mooney
Subject: set flags based on compiler version?
Date: Thu, 6 Jul 2006 18:13:25 -0500 (CDT)


Is there a recommended way to modify libtool (I'm looking at 1.5.22) such
that PIC flags are set based on compiler *version*?

The Sun Studio 11 compilers (C and C++) still accept -KPIC, but it's marked
in the manual as obsolete and not to be used (and probably has been for a
few revisions of the compiler).  The manual recommends instead using
-xcode=pic32 , which, just to make things a bit more interesting, only
works on sparc (not x86 or x86_64).

That leaves us with three cases:

- sparc*-sun-solaris* with an "old" version of Workshop/Forte/Studio
  compiler:

                _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'

- sparc*-sun-solaris* with W/F/S compiler newer than some version (I know
  this works with the 6u2 compiler, which reports its version as 5.3)

                _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-xcode=pic32'

- x86*-*-solaris* with W/F/S compiler, any version:

                _LT_AC_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'


If someone can provide some guidance on how to approach this, I'll send
along a patch.

Tim
--
Tim Mooney                              address@hidden
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North Dakota State University, Fargo, ND 58105-5164




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