Date: Sat, 13 Jul 2002 16:48:38 +0200 From: Paul Everlund <tdv94ped@cs.umu.se> To: Roman Neuhauser <neuhauser@bellavista.cz> Cc: freebsd-questions@freebsd.org Subject: Re: Include files in /usr/local/include not found Message-ID: <3D303DC6.CD4A5CFB@cs.umu.se> References: <3D3013EA.C0904498@cs.umu.se> <20020713140607.GH322@freepuppy.bellavista.cz>
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Roman Neuhauser wrote:
>
> > Date: Sat, 13 Jul 2002 13:50:02 +0200
> > From: Paul Everlund <tdv94ped@cs.umu.se>
> > To: freebsd-questions@freebsd.org
> > Subject: Include files in /usr/local/include not found
> >
> > Hi!
> >
> > I got an error while making ./configure for a program. It said it
> > did not find png.h, but it's there as I have png-1.2.4 installed
> > on my system.
> >
> > Wrote the following test program:
> >
> > ---test.c
> > #include <png.h>
> >
> > int main()
> > {
> > return 0;
> > }
> >
> > Did then compile it with:
> > cc test.c
> >
> > Got the following error:
> > test.c:1: png.h: No such file or directory
> >
> > Did then try to compile it as this:
> > cc -I/usr/local/include test.c
> >
> > This worked!
> >
> > My question is:
> > How do one fix so /usr/local/include is searched automatically?
> >
> > If that can be done, the ./configure should work for the program
> > I'm trying to build.
> I don't have an answer, but two questions instead (and a hint
> maybe):
>
> what does config.log say about that error?
configure:5957: checking for PNG support
configure:5963: checking for png.h
configure:5973: cc -E conftest.c >/dev/null 2>conftest.out
configure:5969: png.h: No such file or directory
configure: failed program was:
#line 5968 "configure"
#include "confdefs.h"
#include <png.h>
configure:5996: checking for png_get_io_ptr in -lpng
configure:6015: gcc -o conftest -g -O2 conftest.c -lpng 1>&5
/usr/libexec/elf/ld: cannot find -lpng
configure: failed program was:
#line 6004 "configure"
#include "confdefs.h"
/* Override any gcc2 internal prototype to avoid an error. */
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char png_get_io_ptr();
int main() {
png_get_io_ptr()
; return 0; }
configure:6037: checking if PNG package is complete
> is the software publically available?
Yep!
> morale: don't trust configure, and if at all possible, double
> check what it tells you with its guts, and config.log
I don't trust configure. :-) That's why I wrote my own test program.
Directory /usr/include is searched by gcc automatically, but it seems
/usr/local/include is not. I think that is somehow strange. Locally
installed packages/libraries with header files should be in gcc's
search path.
Thanks for your reply!
Best regards,
Paul
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