3.0.2 build failure on RHELv5.1

[John W. Eaton]

On 22-Sep-2008, Jeff Blaine wrote:

| That's correct:
| 
| octave-3.0.2:beijing> grep ZLIB config.h
| /* Define if ZLIB is available. */
| #define HAVE_ZLIB 1
| #define HAVE_ZLIB_H 1
| octave-3.0.2:beijing>
| 
| It's possible there is some other zlib.h being included, but
| there is no reasonable explanation as to why.  For example:
| 
| octave-3.0.2:beijing> grep gzclearerr /usr/rcf/include/zlib.h
| octave-3.0.2:beijing>
| 
| However, I have nothing whatsoever in my shell's environment
| that suggests /usr/rcf anywhere.
| 
| octave-3.0.2:beijing> env | grep /usr/rcf
| octave-3.0.2:beijing>

Try the following in your Octave build directory:

  cd src
  make CXXFLAGS=-save-temps pic/c-file-ptr-stream.o

then look at the resulting c-file-ptr-stream.ii file (it will be in
the src directory, not the src/pic directory) and see if it gives you
any clues about why these symbols are not declared.  It should at
least tell you which zlib.h file is included and precisely what the
declaration for gzclearerr is, assuming it is there.

When I do this, I see

  # 1 "/usr/include/zlib.h" 1 3 4

in the .ii file at the point where zlib.h is included, and

  extern void gzclearerr (gzFile file);

later on in the file.  What happens on your system?

jwe