This section gathers most common errors that occur at build time.
I got the latest version of PHP using the anonymous CVS service, but there's no configure script!
You have to have the GNU autoconf package installed so you can generate the configure script from configure.in. Just run ./buildconf in the top-level directory after getting the sources from the CVS server. (Also, unless you run configure with the --enable-maintainer-mode option, the configure script will not automatically get rebuilt when the configure.in file is updated, so you should make sure to do that manually when you notice configure.in has changed. One symptom of this is finding things like @VARIABLE@ in your Makefile after configure or config.status is run.)
I'm having problems configuring PHP to work with Apache. It says it can't find httpd.h, but it's right where I said it is!
You need to tell the configure/setup script the location of the top-level of your Apache source tree. This means that you want to specify --with-apache=/path/to/apache and not --with-apache=/path/to/apache/src.
While configuring PHP (./configure), you come across an error similar to the following:
checking lex output file root... ./configure: lex: command not found configure: error: cannot find output from lex; giving up
Be sure to read the installation instructions carefully and note that you need both flex and bison installed to compile PHP. Depending on your setup you will install bison and flex from either source or a package, such as a RPM.
When I try to start Apache, I get the following message:
fatal: relocation error: file /path/to/libphp4.so: symbol ap_block_alarms: referenced symbol not found
This error usually comes up when one compiles the Apache core program as a DSO library for shared usage. Try to reconfigure apache, making sure to use at least the following flags:
For more information, read the top-level Apache INSTALL file or the Apache » DSO manual page.
When I run configure, it says that it can't find the include files or library for GD, gdbm, or some other package!
You can make the configure script looks for header files and libraries in non-standard locations by specifying additional flags to pass to the C preprocessor and linker, such as:
CPPFLAGS=-I/path/to/include LDFLAGS=-L/path/to/library ./configure
env CPPFLAGS=-I/path/to/include LDFLAGS=-L/path/to/library ./configure
When it is compiling the file language-parser.tab.c, it gives me errors that say yytname undeclared.
You need to update your version of Bison. You can find the latest version at » http://www.gnu.org/software/bison/bison.html.
When I run make, it seems to run fine but then fails when it tries to link the final application complaining that it can't find some files.
Some old versions of make that don't correctly put the compiled versions of the files in the functions directory into that same directory. Try running cp *.o functions and then re-running make to see if that helps. If it does, you should really upgrade to a recent version of GNU make.
When linking PHP, it complains about a number of undefined references.
Take a look at the link line and make sure that all of the appropriate libraries are being included at the end. Common ones that you might have missed are '-ldl' and any libraries required for any database support you included.
If you're linking with Apache 1.2.x, did you remember to add the appropriate information to the EXTRA_LIBS line of the Configuration file and re-rerun Apache's Configure script? See the installation chapter for more information.
Some people have also reported that they had to add '-ldl' immediately following libphp4.a when linking with Apache.
I can't figure out how to build PHP with Apache 1.3.
This is actually quite easy. Follow these steps carefully:
Note: You can also use the new Apache ./configure script. See the instructions in the README.configure file which is part of your Apache distribution. Also have a look at the INSTALL file in the PHP distribution.
I have followed all the steps to install the Apache module version on Unix, and my PHP scripts show up in my browser or I am being asked to save the file.
This means that the PHP module is not getting invoked for some reason. Three things to check before asking for further help:
It says to use: --activate-module=src/modules/php4/libphp4.a, but that file doesn't exist, so I changed it to --activate-module=src/modules/php4/libmodphp4.a and it doesn't work!? What's going on?
Note that the libphp4.a file is not supposed to exist. The apache process will create it!
When I try to build Apache with PHP as a static module using --activate-module=src/modules/php4/libphp4.a it tells me that my compiler is not ANSI compliant.
This is a misleading error message from Apache that has been fixed in more recent versions.
When I try to build PHP using --with-apxs I get strange error messages.
There are three things to check here. First, for some reason when Apache builds the apxs Perl script, it sometimes ends up getting built without the proper compiler and flags variables. Find your apxs script (try the command which apxs), it's sometimes found in /usr/local/apache/bin/apxs or /usr/sbin/apxs. Open it and check for lines similar to these:
my $CFG_CFLAGS_SHLIB = ' '; # substituted via Makefile.tmpl my $CFG_LD_SHLIB = ' '; # substituted via Makefile.tmpl my $CFG_LDFLAGS_SHLIB = ' '; # substituted via Makefile.tmpl
my $CFG_CFLAGS_SHLIB = '-fpic -DSHARED_MODULE'; # substituted via Makefile.tmpl my $CFG_LD_SHLIB = 'gcc'; # substituted via Makefile.tmpl my $CFG_LDFLAGS_SHLIB = q(-shared); # substituted via Makefile.tmpl
my $CFG_LIBEXECDIR = 'modules'; # substituted via APACI install
my $CFG_LIBEXECDIR = '/usr/lib/apache'; # substituted via APACI install
During make, I get errors in microtime, and a lot of RUSAGE_ stuff.
During the make portion of installation, if you encounter problems that look similar to this:
microtime.c: In function `php_if_getrusage': microtime.c:94: storage size of `usg' isn't known microtime.c:97: `RUSAGE_SELF' undeclared (first use in this function) microtime.c:97: (Each undeclared identifier is reported only once microtime.c:97: for each function it appears in.) microtime.c:103: `RUSAGE_CHILDREN' undeclared (first use in this function) make: *** [microtime.lo] Error 1 make: Leaving directory `/home/master/php-4.0.1/ext/standard' make: *** [all-recursive] Error 1 make: Leaving directory `/home/master/php-4.0.1/ext/standard' make: *** [all-recursive] Error 1 make: Leaving directory `/home/master/php-4.0.1/ext' make: *** [all-recursive] Error 1
Your system is broken. You need to fix your /usr/include files by installing a glibc-devel package that matches your glibc. This has absolutely nothing to do with PHP. To prove this to yourself, try this simple test:
$ cat >test.c <<X #include <sys/resource.h> X $ gcc -E test.c >/dev/null
When compiling PHP with MySQL, configure runs fine but during make I get an error similar to the following: ext/mysql/libmysql/my_tempnam.o(.text+0x46): In function my_tempnam': /php4/ext/mysql/libmysql/my_tempnam.c:103: the use of tempnam' is dangerous, better use mkstemp', what's wrong?
First, it's important to realize that this is a Warning and not a fatal error. Because this is often the last output seen during make, it may seem like a fatal error but it's not. Of course, if you set your compiler to die on Warnings, it will. Also keep in mind that MySQL support is enabled by default.
Note: As of PHP 4.3.2, you'll also see the following text after the build (make) completes:
Build complete. (It is safe to ignore warnings about tempnam and tmpnam).
I want to upgrade my PHP. Where can I find the ./configure line that was used to build my current PHP installation?
Either you look at config.nice file, in the source tree of your current PHP installation or, if this is not available, you simply run a
<?php phpinfo(); ?>
When building PHP with the GD library it either gives strange compile errors or segfaults on execution.
Make sure your GD library and PHP are linked against the same depending libraries (e.g. libpng).
When compiling PHP I seemingly get random errors, like it hangs. I'm using Solaris if that matters.
Using non-GNU utilities while compiling PHP may cause problems. Be sure to use GNU tools in order to be certain that compiling PHP will work. For example, on Solaris, using either the SunOS BSD-compatible or Solaris versions of sed will not work, but using the GNU or Sun POSIX (xpg4) versions of sed will work. Links: » GNU sed, » GNU flex, and » GNU bison.