check your config.log. It is very likely that libtiff, libjpeg or libz couldn't
be found.

Actually, it is more likely that there is an earlier version
of libpdf being found, and that is what PHP is trying to 
link.

Scour your lib dirs and get rid of old copies of libpdf,
as they are no longer supported.

Last lines of config.log are as the following, it seems that the libtiff version is incorrect, I'm using tiff-v3.5.5 downloaded from http://www.libtiff.org, if that's the problem, which version I can use?

Thanks in advance.

Yale Yu

config.log
==========
configure:25095: checking for TIFFOpen in -ltiff
configure:25114: gcc -o conftest -g -O2   -L/usr/local/lib -L/usr/local/lib conf
test.c -ltiff  -lpng -ljpeg -lm -lcrypt  -lz -L/usr/local/lib -ljpeg -L/usr/local/lib -lpng -L/usr/local/lib 1>&5
/usr/ccs/bin/ld: /usr/local/lib/libtiff.sl: Not a valid object file (invalid version id)
collect2: ld returned 1 exit status
configure: failed program was:
#line 25103 "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 TIFFOpen();

int main() {
TIFFOpen()
; return 0; }
configure:25258: checking for PDF_show_boxed in -lpdf
configure:25277: gcc -o conftest -g -O2   -L/usr/local/lib -L/usr/local/lib conf
test.c -lpdf  -ltiff -lpng -ljpeg -lm -lcrypt  -lz -L/usr/local/lib -ljpeg -L/usr/local/lib -lpng -L/usr/local/lib -ltiff -L/usr/local/lib 1>&5
/usr/ccs/bin/ld: /usr/local/lib/libtiff.sl: Not a valid object file (invalid version id)
collect2: ld returned 1 exit status
configure: failed program was:
#line 25266 "configure"ternal prototype to avoid an error.  */
#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 PDF_show_boxed();

int main() {
PDF_show_boxed()
; return 0; }

Last lines of config.log are as the following, it seems that the libtiff version is incorrect, I'm using tiff-v3.5.5 downloaded from http://www.libtiff.org, if that's the problem, which version I can use?

Thanks in advance.

Yale Yu

config.log
==========
configure:25095: checking for TIFFOpen in -ltiff
configure:25114: gcc -o conftest -g -O2   -L/usr/local/lib -L/usr/local/lib conf
test.c -ltiff  -lpng -ljpeg -lm -lcrypt  -lz -L/usr/local/lib -ljpeg -L/usr/local/lib -lpng -L/usr/local/lib 1>&5
/usr/ccs/bin/ld: /usr/local/lib/libtiff.sl: Not a valid object file (invalid version id)
collect2: ld returned 1 exit status
configure: failed program was:
#line 25103 "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 TIFFOpen();

int main() {
TIFFOpen()
; return 0; }
configure:25258: checking for PDF_show_boxed in -lpdf
configure:25277: gcc -o conftest -g -O2   -L/usr/local/lib -L/usr/local/lib conf
test.c -lpdf  -ltiff -lpng -ljpeg -lm -lcrypt  -lz -L/usr/local/lib -ljpeg -L/usr/local/lib -lpng -L/usr/local/lib -ltiff -L/usr/local/lib 1>&5
/usr/ccs/bin/ld: /usr/local/lib/libtiff.sl: Not a valid object file (invalid version id)
collect2: ld returned 1 exit status
configure: failed program was:
#line 25266 "configure"ternal prototype to avoid an error.  */
#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 PDF_show_boxed();

int main() {
PDF_show_boxed()
; return 0; }

After download and install libtiff v3.4 from ftp://ftp.sgi.com/graphics/tiff, this configure script complete successfully, but "make" quit with the following error:

/bin/sh /www/src/php-4.0RC2/libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I/www/src/php-4.0RC2/ -I/www/src/php-4.0RC2 -I/usr/local/apache/include -I/
www/src/php-4.0RC2/Zend -I/www/src/php-4.0RC2 -I/usr/local/include   -g -O2 -Wall  -c reentrancy.c
reentrancy.c: In function `php_localtime_r':
reentrancy.c:53: warning: implicit declaration of function `localtime_r'
reentrancy.c: In function `php_ctime_r':
reentrancy.c:60: warning: implicit declaration of function `ctime_r'
reentrancy.c: In function `php_asctime_r':
reentrancy.c:67: warning: implicit declaration of function `asctime_r'
reentrancy.c: In function `php_gmtime_r':
reentrancy.c:74: warning: implicit declaration of function `gmtime_r'
reentrancy.c: At top level:
reentrancy.c:84: redefinition of `php_localtime_r'
reentrancy.c:52: `php_localtime_r' previously defined here
reentrancy.c:105: redefinition of `php_ctime_r'
reentrancy.c:59: `php_ctime_r' previously defined here
reentrancy.c:123: redefinition of `php_asctime_r'
reentrancy.c:66: `php_asctime_r' previously defined here
reentrancy.c:141: redefinition of `php_gmtime_r'
reentrancy.c:73: `php_gmtime_r' previously defined here
make[1]: *** [reentrancy.lo] Error 1
make[1]: Leaving directory `/www/src/php-4.0RC2'
make: *** [all-recursive] Error 1

-------
Yale Yu

These are seperate issues...please open a new report on this.
Also plz add your configure line as it currently stands. It looks
like maybe you are trying to compile with thread safety enabled?