How to dump conftest.c?

Question

I have problems linking to a lot of libraries with a cross-compiler. Is it possible to dump the file conftest.c to a safe location each time it's being generated?

I tried to uncomment the lines

rm -f conftest

from the configure script, but it continues like it means nothing.

Yuonneyup

The config.log file generated by configure has the contents of conftest.c for each test, compiler command invocation and other stuff. – Sotos

@Sotos - While building mpfr, I could not find the contents of conftest.c in config.log, or elsewhere. – Subglacial

Answer 1

Check the config.log, it includes the failed program Something like:

...
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define PACKAGE "libogg"
| #define VERSION "1.2.2"
| /* end confdefs.h.  */
| #ifdef __STDC__
| # include <limits.h>
| #else
| # include <assert.h>
| #endif
...

Fidelis

No, sometimes it does not. – Bunk

Answer 2

For me it prints the code on failure but to force it I created a wrapper script:

#!/bin/sh

for i in "$@"; do
  if echo "$i" | grep -q '\.c$'; then
     echo printing $i
     cat "$i"
  fi
done

exec cc "$@"

Then run with

$ CC=$PWD/cc.sh ./configure

Alleras