[Gambas-user] Same problem as MJ in late Nov 2004....

Mon Jan 31 21:20:58 CET 2005

Sorry if it is to long but this was under my pen.
Found this problem too. libxml-devel is installed

*********************************************************************************************
Making all in xml
make[4]: Entering directory `/usr/local/src/gambas2-1.9.2/src/lib/xml'
Making all in libxml
make[5]: Entering directory `/usr/local/src/gambas2-1.9.2/src/lib/xml/libxml'
Making all in xslt
make[6]: Entering directory `/usr/local/src/gambas2-1.9.2/src/lib/xml/libxml/xslt'
if /bin/sh ../../../../../libtool 
	--mode=compile gcc 
	-DHAVE_CONFIG_H 
	-I. -I. -I../../../../.. -I../../../../../src/share 
	-I/usr/include/libxml2        
	-g -O2 -pipe -Wall -fno-strict-aliasing -g -Os 
	-MT main.lo -MD -MP -MF ".deps/main.Tpo" -c -o main.lo main.c; \
then mv -f ".deps/main.Tpo" ".deps/main.Plo"; else rm -f ".deps/main.Tpo"; exit 1; fi

----8<----------
make[6]: Leaving directory `/usr/local/src/gambas2-1.9.2/src/lib/xml/libxml/xslt'
Making all in rpc
make[6]: Entering directory `/usr/local/src/gambas2-1.9.2/src/lib/xml/libxml/rpc'
if /bin/sh ../../../../../libtool 
	--mode=compile gcc -DHAVE_CONFIG_H 
	-I. -I. -I../../../../.. -I../../../../../src/share 
	-I/usr/include/libxml2      
	-g -O2 -pipe -Wall -fno-strict-aliasing -g-Os 
	-MT main.lo -MD -MP -MF ".deps/main.Tpo" -c -o main.lo main.c; \
then mv -f ".deps/main.Tpo" ".deps/main.Plo"; else rm -f ".deps/main.Tpo"; exit 1; fi
-------8<--------
XmlRpc.c  -fPIC -DPIC -o .libs/CXmlRpc.o
CXmlRpc.c:31:30: libxml/xmlwriter.h: No such file or directory
CXmlRpc.c: In function `CXMLRPC_Call':
CXmlRpc.c:119: error: `xmlTextWriterPtr' undeclared (first use in this function)
-----8<------
make[1]: Leaving directory `/usr/local/src/gambas2-1.9.2'
make: *** [all] Error 2

*********************************************************************************************

GB_COMPONENT_PKG_CONFIG(
  libxml,
  LIBXML,
  [XML parser component],
  [libxml],
  libxml-2.0)

dnl GB_COMPONENT(
dnl   libxml,
dnl   LIBXML,
dnl   [XML parser component],
dnl   [GB_FIND(libxml, /usr/local/lib /usr/local /opt /usr/lib /usr, include/libxml* include)],
dnl   [GB_FIND(libxml2.$SHLIBEXT, /usr/local /opt /usr, lib)],
dnl   [$C_LIB $THREAD_LIB -lxml2 -lm],
dnl   [$THREAD_INC])

GB_COMPONENT(
  xslt,
  XSLT,
  [XSLT/XML parser component],
  [xslt],
  [GB_FIND(libxslt, /usr/local/lib /usr/local /opt /usr/lib /usr, include/libxml* include/libxsl
t* include)],
  [GB_FIND(libxslt.$SHLIBEXT, /usr/local /opt /usr, lib)],
  [$LIBXML_LIB -lxslt])

dnl ---- Perl Compatible Regular Expression component
*********************************************************************************************

By the change to use GB_COMPONENT_PKG_CONFIG the include is broken.

libxml provides "xml2-config" and that is pointing to the correct include path
SuSE system has it in /usr/bin for the distributed rpm's.
If the provided version, curl in 8.2, is to old then the user add the
newer version in /usr/local and the "xml2-config" is in /usr/local/bin for new
development.
The "/usr/bin/xml2-config" is for distributed rpm's world wide.

Gambas version 1.0.2 uses the "xml2-config" one and compiles OK. 1.9.2 does not.

GB_COMPONENT_PKG_CONFIG should look in "/usr/local/bin" first, then in "/usr" for
a "xxxxx-config" executable, if not found then the /usr/pkgconfig system can be safe
used.

/usr/local/lib/pkgconfig can also exist and must be used before /usr/lib/pkgconfig
to manage updates from pkgconfig.

This is in respect that packages compiled with prefix=/usr/local and creates the
pkgconfig xxxxx.pc file put it in /usr/local/lib/pkgconfig as is done by i.e. 
'fluidsynth' instead of /usr/lib/pkgconfig.

I beleave that a xxxx-config, is the most correct one, however the pkgconfig is
overall more informative and have advantages above the xxxx-config.

There are packages providing none, xxx-config, xxxxx.pc or both systems.

For the XML component it is the 'xmlwriter.h' that is missing in the old SuSE 8.2
package and a update of the systems xml2 breaks the other packages from SuSE, 
Yast depends on the old one. It stopped working after xml2 update in /usr/lib
and was repaired by installing the original and the updated for gambas in /usr/local/lib.

No dll hell anymore but a lib hell instead with linux :=)

terminator: # pkg-config --modversion libxml-2.0
2.5.11
terminator: # pkg-config --cflags libxml-2.0
-I/usr/include/libxml2
**
** the orginal provided by SuSE 8.2 !! *

terminator: # xml2-config --version
2.6.13
terminator: # xml2-config --prefix
/usr/local
**
** this is the file in /usr/local/bin instead the original in /usr/bin !! **

terminator: # pkg-config --define-variable=prefix=/usr --cflags libxml-2.0
-I/usr/include/libxml2
terminator: # pkg-config --define-variable=prefix=/usr/local --cflags libxml-2.0
-I/usr/local/include/libxml2
terminator: # pkg-config --define-variable=prefix=/usr --modversion libxml-2.0
2.5.11
terminator: # pkg-config --define-variable=prefix=/usr/local --modversion libxml-2.0
2.5.11
**
** this is modifying the /usr to /usr/local OK, but version is wrong  **

Several tests told me pkg-config is only working on the /usr/lib and not /usr/local/lib
and disregards local updates from user (sysadmin).!

using the following script:
#!/bin/sh

cd gambas2-1.9.2
./reconf
./configure --prefix=/opt \
  --enable-libxml \
  --with-include-xml=/usr/local/include \
  --with-lib-xml=/usr/local/lib \
  --enable-xslt \
  --with-xslt-includes=/usr/include \
  --with-xslt-libraries=/usr/lib \

make

gives still the error. 

In config.log : 
  configure:#####: checking for XML parser.... with pkg-config
and
  LIBXML_DIR='libxml'
  LIBXML_INC='-I/usr/include/libxml2 '
  LIBXML_LIB='-lxml2 -lptread -lz -lm'

  XSLT_DIR='xslt'
  XSLT_INC=' -I/usr/include'
  XSLT_LIB=' -L/usr/lib -lxml2 -lptread -lz -lm -lxslt'
  XSLT_PATH='/usr/lib/..'

I can't use XML now, in gambas2 but it works in gambas1 :(
pkg-config is not a good idea after all, I think.

---------
Ron O