AC_CHECK_LIB small problem which Solaris C compiler

[Nicolas Joly]

Hi,

I just tested CVS autoconf under Solaris 2.5.1 and found a small
problem with AC_CHECK_LIB macro.

Under some circumstances, some temporary files remains, which generate
testsuite failures (by example with `AC_IRIX_SUN' macro, see
testsuite.log below).

This problem appears if AC_CHECK_LIB result is `no'.

AC_CHECK_LIB(m, log)      ... works fine
AC_CHECK_LIB(m, log200)   ... problem

I tracked down the problem and found that Solaris cc compiler do not
remove temporary compilations files if link pass fails.

One solution can be to force cleaning of `conftest.$ac_objext' in
`_AC_LINK_IFELSE' macro.

NB: configure script remove this files at the end using the trap.


=====================================
Test suite log for GNU Autoconf 2.49e
=====================================

/home/sis/njoly/autoconf-2.49e/ChangeLog :
| 2001-04-10  Lars J. Aas  <address@hidden>
| 
|       * Makefile.am: AC_SUBST fixes for PACKAGE_NAME, VERSION, PACKAGE...
|       * configure.in: Moved here.
|       Suggested by Akim Demaille and Raja R Harinath.  
| 
| 2001-04-10  Lars J. Aas  <address@hidden>
| 
|       * acgeneral.m4 (_AC_OUTPUT_CONFIG_STATUS):  Re-enable logging to
|       `config.log' from `config.status', but delay logging till after

Failed tests:
  87: acspecific.at:27 AC_IRIX_SUN

## ---------- ##
## Platform.  ##
## ---------- ##

hostname = ptolemee.pasteur.fr
uname -m = sun4u
uname -r = 5.5.1
uname -s = SunOS
uname -v = Generic_103640-12

/usr/bin/uname -p = sparc
/bin/uname -X     = unknown

/bin/arch              = sun4
/usr/bin/arch -k       = sun4u
/usr/convex/getsysinfo = unknown
hostinfo               = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH = 
/home/sis/njoly/autoconf-2.49e/tests:/home/sis/njoly/autoconf-2.49e:/home/sis/njoly/bin:/opt/local/bin:/usr/sbin:/usr/bin:/usr/openwin/bin:/usr/ccs/bin:/opt/SUNWspro/bin:/usr/ucb

=================================
Test suite for GNU Autoconf 2.49e
=================================
87. ./acspecific.at:27: testing AC_IRIX_SUN...
./acspecific.at:27: autoconf --autoconf-dir .. -l $at_srcdir 
./acspecific.at:27: autoheader --autoconf-dir .. -l $at_srcdir
./acspecific.at:27: top_srcdir=$top_srcdir ./configure 
stdout:
checking for gcc... no
checking for cc... cc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for executable suffix... 
checking for object suffix... o
checking whether we are using the GNU C compiler... no
checking whether cc accepts -g... yes
checking for getmntent in -lsun... no
checking for getmntent in -lseq... no
checking for getmntent in -lgen... yes
checking for getmntent... yes
checking for getpwnam in -lsun... no
configure: creating ./config.status
config.status: creating config.h
./acspecific.at:27: cat state-env.after
./acspecific.at:27: cat state-ls.after
20a21
> conftest.o
87. ./acspecific.at:27: FAILED near `acspecific.at:27'

-- 
Nicolas Joly

Informatique Scientifique
Institut Pasteur, Paris.