Re: doc cc -c -o

[Kevin Ryde]

Peter Eisentraut <address@hidden> writes:
>
> AC_PROG_CC_C_O is pretty unsuitable for this.  It only defines a
> preprocessor macro, nothing that you can use in a makefile.

Ah yes (for some reason I thought NO_MINUS_C_MINUS_O was a shell
variable rather than an AC_DEFINE).  New effort then, without
bothering about the cross reference,

        * doc/autoconf.texi (Limitations of Usual Tools): Note cc may not
        allow -c -o together.

     `cc -c foo.c' produces a `foo.o' object file.  Most compilers
     allow a `-o' option to direct the output to a different file, but
     POSIX doesn't require this (with `-c') so it should be avoided.

autoconf.texi.cc-c-o.diff
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