AC_CHECK_TARGET_TOOL behavior

[dave erickson]

Hello;

I am compiling on
uname -a
Linux dogma 2.6.24.7-92.fc8 #1 SMP Wed May 7 16:26:02 EDT 2008 x86_64 x86_64 
x86_64 GNU/Linux
Fedora 8
autoconf version 

 autoconf --version
autoconf (GNU Autoconf) 2.61
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License .
There is NO WARRANTY, to the extent permitted by law.

Written by David J. MacKenzie and Akim Demaille.

I have a problem with AC_CHECK_TARGET_TOOL setting the standard environment 
variables 
It finds the system version tools like ar  instead of x86_64-ar  and notes 
them, it finds  '/usr/bin/ar" but then 
doesn't set AR properly.
In the configure.ac  I have a section looking for tools with target canonical 
names

AC_CHECK_TARGET_TOOL([CPP], cpp [], []) 
AC_CHECK_TARGET_TOOL([CC], gcc, [], [])
AC_CHECK_TARGET_TOOL([CXX], g++, [], [])
AC_CHECK_TARGET_TOOL([RANLIB], ranlib, [], [])
AC_CHECK_TARGET_TOOL([LD], ld, [], [])
AC_CHECK_TARGET_TOOL([AR], ar, [], [])
AC_CHECK_TARGET_TOOL([AS], as, [], [])
AC_CHECK_TARGET_TOOL([READELF], readelf, [], [])
AC_CHECK_TARGET_TOOL([OBJDUMP], objdump, [], [])
AC_CHECK_TARGET_TOOL([OBJCOPY], objcopy, [], [])
AC_CHECK_TARGET_TOOL([SIZE], size, [], [])
AC_CHECK_TARGET_TOOL([NM], nm, [], [])
AC_CHECK_TARGET_TOOL([STRIP], strip, [], [])

AC_SUBST(CPP)
AC_SUBST(CC)
AC_SUBST(CXX)
AC_SUBST(RANLIB)
AC_SUBST(LD)
AC_SUBST(AR)
AC_SUBST(AS)
AC_SUBST(READELF)
AC_SUBST(OBJDUMP)
AC_SUBST(OBJCOPY)
AC_SUBST(SIZE)
AC_SUBST(NM)
AC_SUBST(STRIP)

And then when configure is finished, the config.log has some sort of 
intermediate values instead of the final environment values

like AR='ac_ct_AR' which then crashes when I try and use AR.  Why is configure 
not putting the target variables into the common environment variables?

For example 
CPP='ac_ct_CPP'
CXX='ac_ct_CXX'

And yet CC is set properly
CC='gcc'

Here is an excerpt from config.log:

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_build=x86_64-unknown-linux-gnu
ac_cv_c_compiler_gnu=yes
ac_cv_env_CC_set=
ac_cv_env_CC_value=
ac_cv_env_CFLAGS_set=
ac_cv_env_CFLAGS_value=
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_LIBS_set=
ac_cv_env_LIBS_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=
ac_cv_host=x86_64-unknown-linux-gnu
ac_cv_objext=o
ac_cv_path_install='/usr/bin/install -c'
ac_cv_path_mkdir=/bin/mkdir
ac_cv_prog_AWK=gawk
ac_cv_prog_ac_ct_AR=ar
ac_cv_prog_ac_ct_AS=as
ac_cv_prog_ac_ct_CC=gcc
ac_cv_prog_ac_ct_CPP='cpp '
ac_cv_prog_ac_ct_CXX=g++
ac_cv_prog_ac_ct_LD=ld
ac_cv_prog_ac_ct_NM=nm
ac_cv_prog_ac_ct_OBJCOPY=objcopy
ac_cv_prog_ac_ct_OBJDUMP=objdump
ac_cv_prog_ac_ct_RANLIB=ranlib
ac_cv_prog_ac_ct_READELF=readelf
ac_cv_prog_ac_ct_SIZE=size
ac_cv_prog_ac_ct_STRIP=strip
ac_cv_prog_cc_c89=
ac_cv_prog_cc_g=yes
ac_cv_prog_make_make_set=yes
ac_cv_target=x86_64-unknown-linux-gnu
am_cv_CC_dependencies_compiler_type=gcc3

## ----------------- ##
## Output variables. ##
## ----------------- ##

ACLOCAL='${SHELL} /home/dave/src/nscorpion/missing --run aclocal-1.10'
AMDEPBACKSLASH='\'
AMDEP_FALSE='#'
AMDEP_TRUE=''
AMTAR='${SHELL} /home/dave/src/nscorpion/missing --run tar'
AR='ac_ct_AR'
AS='ac_ct_AS'
AUTOCONF='${SHELL} /home/dave/src/nscorpion/missing --run autoconf'
AUTOHEADER='${SHELL} /home/dave/src/nscorpion/missing --run autoheader'
AUTOMAKE='${SHELL} /home/dave/src/nscorpion/missing --run automake-1.10'
AWK='gawk'
CC='gcc'
CCDEPMODE='depmode=gcc3'
CFLAGS='-g -O2 -mtune=nocona'
CPP='ac_ct_CPP'
CPPFLAGS=''
CXX='ac_ct_CXX'
CYGPATH_W='echo'
DEFS='-DHAVE_CONFIG_H'
DEPDIR='.deps'
DRDC_PREFIX='/home/dave/'
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EXEEXT=''
INSTALL_DATA='${INSTALL} -m 644'
INSTALL_PROGRAM='${INSTALL}'
INSTALL_SCRIPT='${INSTALL}'
INSTALL_STRIP_PROGRAM='$(install_sh) -c -s'
LD='ac_ct_LD'
LDFLAGS=' -L/usr/lib64'
LIBOBJS=''
LIBS=''
LIB_VER='0:1:0'
LTLIBOBJS=''
MAINT='#'
MAINTAINER_MODE_FALSE=''
MAINTAINER_MODE_TRUE='#'
MAKEINFO='${SHELL} /home/dave/src/nscorpion/missing --run makeinfo'
NM='ac_ct_NM'
OBJCOPY='ac_ct_OBJCOPY'
OBJDUMP='ac_ct_OBJDUMP'
OBJEXT='o'
PATH_SEPARATOR=':'
RANLIB='ac_ct_RANLIB'
READELF='ac_ct_READELF'
REL_VER='0'
SET_MAKE=''
SHELL='/bin/sh'
SIZE='ac_ct_SIZE'
STRIP='ac_ct_STRIP'
TARGET_OS='gnu'
VERSION='0.1'
ac_ct_CC='gcc'
am__fastdepCC_FALSE='#'
am__fastdepCC_TRUE=''
am__include='include'
am__isrc=''
am__leading_dot='.'
am__quote=''
am__tar='${AMTAR} chof - "$$tardir"'
am__untar='${AMTAR} xf -'
bindir='${exec_prefix}/bin'
build='x86_64-unknown-linux-gnu'
build_alias=''
build_cpu='x86_64'
build_os='linux-gnu'
build_vendor='unknown'
datadir='${datarootdir}'
datarootdir='${prefix}/share'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
dvidir='${docdir}'
exec_prefix='${prefix}'
host='x86_64-unknown-linux-gnu'
host_alias=''
host_cpu='x86_64'
host_os='linux-gnu'
host_vendor='unknown'
htmldir='${docdir}'
includedir='/home/dave//include'
infodir='${datarootdir}/info'
install_sh='$(SHELL) /home/dave/src/nscorpion/install-sh'
libdir='/home/dave//lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
mandir='${datarootdir}/man'
mkdir_p='/bin/mkdir -p'
oldincludedir='/usr/include'
pdfdir='${docdir}'
prefix='/home/dave'
program_transform_name='s,x,x,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target='x86_64-unknown-linux-gnu'
target_alias=''
target_cpu='x86_64'
target_os='linux-gnu'
target_vendor='unknown'



Thanks,

Dave
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