Re: [PHP-DEV] OS X, enable embed problem, patch

Wed, 30 Apr 2008 08:21:44 -0700 

I don't want libphp.so as we are not using Apache.

The brief details are roughly as follows:
- we use lighthttpd for a web server
- much of our site is in Php
- we are transitioning to Ruby
- we have a custom-written wrapper to allow Php to run inside of Ruby, to make the transition a little easier 


Now, this wrapper needs to link to php.  On Windows and Linux, that's 
easy.  But on OS X, if we end up with libphp5.so, the link step fails. 
With a dylib, though, the link step succeeds and life is good, if a 
little bit rainy.



It is very possible that we actually want a static build.  I'm new at 
nexopia and previous people who had tried this reported some problems, 
though this could have been on an unrelated matter.  On the other hand, 
./configure --enable-embed=shared (or just --enable-embed) fails during 
the linking step as documented by the bug I linked to, 44462.



I freely admit to not being totally up to speed on OS X build 
environments.  Until last week, I just sort of assumed OS X used .so 
files for everything.  In other words, the problem here may be my 
expectations, and I would love to be educated on this matter.  Still, 
the patch I've attached, generating a dylib, does solve the specific 
problem I'm trying to solve.



While I was expecting "auto" tools to take care of the shared library 
issue, php-5.2.5 still seems to attempt to build an .so file on OS X, 
fails (with --enable-embed), and regardless, _I_ suspect should be 
generating a dylib for me anyway.


BuildSmart wrote:

This is taken care of by "auto" tools.


If you are experiencing build issues of public releases then you're 
doing something wrong.



I build PHP for a living in OS X and I've encountered no build issues 
what-so-ever related to building with dylib linking but the resulting 
binary will (should) still be libphp.so because apache expects this.



If you need some help I can spare a few moments and examine your build 
environment and offer you some pointers/advice that should help you to 
develop better binary builds.



Out of curiosity, why are you enabling embedded in this manner, there 
are very few reason that PHP needs to be built this way and the 
environment and dependancies need to be established for the build to be 
successful.



When building for embedding purposes you really want a static build 
(libphp.a rather than libphp.so) so I'm having a hard time understanding 
what exactly it is you're trying to achieve.


 -- Dale

On Apr 29, 2008, at 19:14 PM, Christopher Thompson wrote:


Please be gentle, I have very little experience developing on OS X.  
To be honest, the whole dylib thing seems messy and confusing to me, 
compared to the fairly straight-forward Linux style .so approach.



Expected behavior:
Able to configure and build on OS X with:
./configure --enable-embed

Actual behavior:
http://bugs.php.net/bug.php?id=44462

Suspected problem:
Trying to build .so instead of .dylib on OS X.

Suggested solution:
See patch below.  This makes it possible to do:
./configure --enable-embed=dylib

I did this instead of fixing --enable-embed=shared because the build 
process appears to be fundamentally different.


NOTE!  Once applying the patch, you need to do:
aclocal
autoconf
./configure --enable-embed=dylib

If you don't do aclocal to regenerate the necessary files, things break.


diff -urN php-5.2.5.clean/Makefile.global php-5.2.5/Makefile.global
--- php-5.2.5.clean/Makefile.global 2007-08-03 08:01:56.000000000 -0600
+++ php-5.2.5/Makefile.global 2008-04-29 16:44:36.000000000 -0600
@@ -17,6 +17,10 @@

  $(LIBTOOL) --mode=link $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -rpath 
$(phptempdir) $(EXTRA_LDFLAGS) $(LDFLAGS) $(PHP_RPATHS) 
$(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
  [EMAIL PROTECTED](LIBTOOL) --silent --mode=install cp $@ $(phptempdir)/$@ 
>/dev/null 2>&1


+libphp$(PHP_MAJOR_VERSION).dylib: $(PHP_GLOBAL_OBJS) $(PHP_SAPI_OBJS)

+ $(LIBTOOL) --mode=link $(CC) -dynamiclib -install_name 
$(INSTALL_ROOT)$(prefix)/lib/$@ -current_version $(PHP_VERSION) 
-compatibility_version $(PHP_MAJOR_VERSION) -undefined dynamic_lookup 
$(PHP_RPATHS) $(PHP_GLOBAL_OBJS:.lo=.o) $(PHP_SAPI_OBJS:.lo=.o) 
$(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@
+ [EMAIL PROTECTED](LIBTOOL) --silent --mode=install cp $@ $(phptempdir)/$@ 
>/dev/null 2>&1

+

 libs/libphp$(PHP_MAJOR_VERSION).bundle: $(PHP_GLOBAL_OBJS) 
$(PHP_SAPI_OBJS)
  $(CC) $(MH_BUNDLE_FLAGS) $(CFLAGS_CLEAN) $(EXTRA_CFLAGS) $(LDFLAGS) 
$(EXTRA_LDFLAGS) $(PHP_GLOBAL_OBJS:.lo=.o) $(PHP_SAPI_OBJS:.lo=.o) 
$(PHP_FRAMEWORKS) $(EXTRA_LIBS) $(ZEND_EXTRA_LIBS) -o $@ && cp $@ 
libs/libphp$(PHP_MAJOR_VERSION).so


diff -urN php-5.2.5.clean/acinclude.m4 php-5.2.5/acinclude.m4
--- php-5.2.5.clean/acinclude.m4 2007-08-20 08:28:45.000000000 -0600
+++ php-5.2.5/acinclude.m4 2008-04-29 16:44:44.000000000 -0600
@@ -799,6 +799,15 @@
 ])

 dnl
+dnl PHP_BUILD_DYLIB
+dnl
+AC_DEFUN([PHP_BUILD_DYLIB],[
+  PHP_BUILD_PROGRAM
+  OVERALL_TARGET=libphp[]$PHP_MAJOR_VERSION[.dylib]
+  php_build_target=static
+])
+
+dnl
 dnl PHP_BUILD_BUNDLE
 dnl
 AC_DEFUN([PHP_BUILD_BUNDLE],[
@@ -885,6 +894,7 @@
   case "$2" in
   static[)] PHP_BUILD_STATIC;;
   shared[)] PHP_BUILD_SHARED;;
+  dylib[)]  PHP_BUILD_DYLIB;;
   bundle[)] PHP_BUILD_BUNDLE;;
   program[)] PHP_BUILD_PROGRAM($5);;
   esac
diff -urN php-5.2.5.clean/configure.in php-5.2.5/configure.in
--- php-5.2.5.clean/configure.in 2007-11-08 07:44:11.000000000 -0600
+++ php-5.2.5/configure.in 2008-04-29 16:44:52.000000000 -0600
@@ -252,6 +252,7 @@
 dnl paths to the targets are relative to the build directory
 SAPI_SHARED=libs/libphp[]$PHP_MAJOR_VERSION[.]$SHLIB_DL_SUFFIX_NAME
 SAPI_STATIC=libs/libphp[]$PHP_MAJOR_VERSION[.a]
+SAPI_DYLIB=libs/libphp[]$PHP_MAJOR_VERSION[.]$SHLIB_SUFFIX_NAME
 SAPI_LIBTOOL=libphp[]$PHP_MAJOR_VERSION[.la]

 PHP_CONFIGURE_PART(Configuring SAPI modules)

diff -urN php-5.2.5.clean/sapi/embed/config.m4 
php-5.2.5/sapi/embed/config.m4
--- php-5.2.5.clean/sapi/embed/config.m4 2007-07-11 17:20:36.000000000 
-0600

+++ php-5.2.5/sapi/embed/config.m4 2008-04-29 16:45:06.000000000 -0600
@@ -4,7 +4,7 @@

 PHP_ARG_ENABLE(embed,,

 [  --enable-embed[=TYPE]   EXPERIMENTAL: Enable building of embedded 
SAPI library
-                          TYPE is either 'shared' or 'static'. 
[TYPE=shared]], no, no)
+                          TYPE is 'shared', 'static', or 'dylib'. 
[TYPE=shared]], no, no)


 AC_MSG_CHECKING([for embedded SAPI library support])

@@ -18,6 +18,10 @@
       PHP_EMBED_TYPE=static

       INSTALL_IT="\$(mkinstalldirs) \$(INSTALL_ROOT)\$(prefix)/lib; 
\$(INSTALL) -m 0644 $SAPI_STATIC \$(INSTALL_ROOT)\$(prefix)/lib"

       ;;
+    dylib)
+      PHP_EMBED_TYPE=dylib

+      INSTALL_IT="\$(mkinstalldirs) \$(INSTALL_ROOT)\$(prefix)/lib; 
\$(INSTALL) -m 0644 $SAPI_DYLIB \$(INSTALL_ROOT)\$(prefix)/lib"

+      ;;
     *)
       PHP_EMBED_TYPE=no
       ;;


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-- Dale






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