Build problem on ABM AIX + solution

[eric.van.der.velde@nl.fortisbank.com]

Trying to make gsl on an IBM AIX 4.3 (xlc) system failed in the file
test/results.c (problems concerning the va_list)

The problem is that __STDC__ is not defined on an AIX system (which should
be), and the prepocessor takes the 'wrong' decision.
To solve this problem I modified the test/results file all the occurences
of

#ifdef __STDC__

to

#if defined(__STDC__) || defined(AIX)

Then I added -DAIX to the CFLAGS and ran ./configure again (followed by a
make)

I hope this can solve you build problems on AIX in the future



Here some info on the AIX compiler:

the IBM C compiler doesn't define __STDC__ (despite the fact
that its entirely ANSI compatible - actually it does define __STDC__ if
you put it in "strict" mode, but then it treats an allocation of an "int"
to an "unsigned int" as a severe error and stops. Thus nobody uses the
strict mode, thus __STDC__ is rarely defined. In addition it generates an
error message if you define __STDC__ manually....) Therefore could you put
in a || defined (AIX) to all your #ifdef __STDC__...?

Eric




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