Обсуждение: pgsql-server/ /configure /configure.in onfig/c ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    petere@svr1.postgresql.org    03/10/25 12:32:11

Modified files:
    .              : configure configure.in
    config         : c-compiler.m4
    src/template   : aix bsdi freebsd hpux osf qnx4 solaris univel
                     unixware

Log message:
    Fix CFLAGS selection to actually work.  Add test to detect whether gcc's
    option -fno-strict-aliasing is available.

petere@svr1.postgresql.org (Peter Eisentraut - PostgreSQL) writes:
> Log message:
>     Fix CFLAGS selection to actually work.  Add test to detect whether gcc's
>     option -fno-strict-aliasing is available.

A couple comments on this patch ...

The immediately previous code would default to CFLAGS="-g" if
--enable-debug is specified and the compiler is not gcc.  As it
now stands, we default to CFLAGS="-O -g" instead.  I'm not convinced
this is a good idea.  On most non-gcc compilers, this combination
gets you "-g" and possibly a ton of warnings.

I think you changed the behavior for the AIX port.  Diffing
src/template/aix against the old contents:

diff -c -r1.11 -r1.14
*** pgsql-server/src/template/aix       2002/09/04 22:54:18     1.11
--- pgsql-server/src/template/aix       2003/10/25 15:32:11     1.14
***************
*** 1,9 ****
! if test "$GCC" = yes ; then
!   CFLAGS='-O2 -pipe'
! else # not GCC
!   CFLAGS='-O2 -qmaxmem=16384 -qsrcmsg -qlonglong'
    case $host_os in
!     aix3.2.5 | aix4.1*)
!       CFLAGS='-qmaxmem=16384 -qsrcmsg' ;;
    esac
! fi # not GCC
--- 1,7 ----
! if test "$GCC" != yes ; then
    case $host_os in
!     aix3.2.5 | aix4.1*) ;;
!     *) CFLAGS="-O2 -qlonglong";;
    esac
!   CFLAGS="-O -qmaxmem=16384 -qsrcmsg"
! fi

The "case" is now useless because CFLAGS will always end up with the
later setting.  Don't we want something like

if test "$GCC" != yes ; then
  case $host_os in
    aix3.2.5 | aix4.1*)  CFLAGS='-qmaxmem=16384 -qsrcmsg' ;;
    *)  CFLAGS='-O2 -qmaxmem=16384 -qsrcmsg -qlonglong' ;;
  esac
fi

            regards, tom lane

Tom Lane writes:

> The immediately previous code would default to CFLAGS="-g" if
> --enable-debug is specified and the compiler is not gcc.  As it
> now stands, we default to CFLAGS="-O -g" instead.  I'm not convinced
> this is a good idea.  On most non-gcc compilers, this combination
> gets you "-g" and possibly a ton of warnings.

Good point.  Back to the drawing board.

> I think you changed the behavior for the AIX port.  Diffing
> src/template/aix against the old contents:
>
> diff -c -r1.11 -r1.14

1.11 is not the old content.  But the current state is still broken as you
say.

--
Peter Eisentraut   peter_e@gmx.net