Re: configure scripts and cross-compiling

[Guido Draheim]

You are doing fine, just some configure-checks are not ready
for cross-compiling, and that's what you are warned about.
Basically, the package that you are trying to cross-compile 
has not been made ready for cross-compiling.
Two approaches:
a) learn about config.site or cache-file, and let it contain
   cache-values - the check will then say "(cached) yes",
   so it won't try to autodetect anything.
b) bigendian-crosscompilecheck is a common problem, may be 
   the next generation autoconf will have the solution that
   is currently present in in the autoconf-archive. Edit the
   configure.in, replace AC_C_BIGENDIAN with the reference
   to the following macro, reconf, and build. This is
   generic for all target platforms.
http://cryp.to/autoconf-archive/Cross_Compilation/ac_c_bigendian_cross.html

cheers, guido                   http://www.gnu.org/software/ac-archive



Mike Culbertson wrote:
> 
> Could somone specify what it is generic configure script would have to
> find in order to think that the compiler I am using (gcc 2.95-3 on
> sun/sparc solaris 8) is a cross-compiler?  I have a fairly standard
> install of everything, and I am using no proprietary tools with the
> exception of a few in /usr/ccs/bin (ar, as, etc).  At thi point, nothing
> wants to build properly and I am really not sure what I have changed that
> has caused this (I never have actually been set up as a cross-compiler)
> Thanks in advance.  Any other info provided on request.
> 
> it dies here:
> bash-2.03# ./configure
> loading cache ./config.cache
> checking for gcc... gcc
> checking whether the C compiler (gcc -02 -msupersparc ) works... yes
> checking whether the C compiler (gcc -02 -msupersparc ) is a
> cross-compiler... yes
> checking whether we are using GNU C... yes
> checking whether gcc accepts -g... yes
> checking host system type... sparc-sun-solaris2.8
> checking whether byte ordering is bigendian... configure: error: can not
> run test program while cross compiling
> bash-2.03#
> 
> Mike Culbertson

-- guido                         Edel sei der Mensch, hilfreich und gut
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