Re: acinclude.m4 and wx detection question - Mailing list pgadmin-hackers

Adam H. Pendleton wrote:
> On May 5, 2005, at 4:47 PM, Raphaël Enrici wrote:
>
>
>>Hi Adam,
>>
>>I have a small question in mind I never asked concerning the way we
>>check for wxwidgets files installed while in configure scripts (for
>>example stc headers).
>>Why don't we try to build small C or C++ examples which includes the
>>required files and check to see if the build failed instead of
>>hardcoding some test on file existance ? Or maybe we could parse the
>>'-I' outputs of wx-confg --cflags or cxxflags to take as a base for
>>the
>>tests ?
>
>
> We do use the wx-confg output for our basis:
>
> WX_NEW_LDFLAGS=`${WX_CONFIG} --static --libs`

yes I've seen that the build process is ok and that's a good thing.


>>IMHO we would gain in both portability (it would be easier to take
>>care
>>of specific configuration) and maintenance (no more change needed to
>>acinclude.m4 if we change the version of wxwidgets we support).
>>
>>As an example, my wx-config outputs is this one:
>> wx-config --cflags
>>-I/usr/lib/wx/include/gtk2-unicode-debug-static-2.6-pga3
>>-I/usr/include/wx-2.6-pga3 -D__WXDEBUG__ -D__WXGTK__
>>-D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D_LARGEFILE_SOURCE=1
>
>
> Yes, but how would we go about finding the wx-config file in the
> first place?

Aren't the --with-wx* flags you gave to us useable for this ?
I personnaly use them each time I build pga3 like this:
--with-wx=/usr --with-wx-config=wx-config


>>If I want the configure script to pass with such a configuration, I
>>must
>>patch acinclude.m4 so that it refers to the correct path. If not, it
>>just fails and tells me that I did not install stc which is not true.
>>
>>If we were trying to detect this with a small program like this:
>>#include <wx/stc/stc.h>
>>...
>>void main(void) { .... }
>
>
> Again, you have to find wx-config.  The other problem is that wx
> programs will fail if you don't link against the wx libraries.  Since
> the wx library names are not reported by wx-config, we have to try
> all the possible wx lib names (because they've changed to many times).

mmmh, I missed that part of the process, but:

wx-config --libs gives some informations. In my case :
-pthread   -L/usr/X11R6/lib  /usr/lib/libwx_gtk2ud_pga3_xrc-2.6.a
/usr/lib/libwx_gtk2ud_pga3_html-2.6.a
/usr/lib/libwx_gtk2ud_pga3_adv-2.6.a
/usr/lib/libwx_gtk2ud_pga3_core-2.6.a
/usr/lib/libwx_baseud_pga3_xml-2.6.a
/usr/lib/libwx_baseud_pga3_net-2.6.a /usr/lib/libwx_baseud_pga3-2.6.a
-Wl,--export-dynamic -pthread -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0
-lgdk_pixbuf-2.0 -lpangoxft-1.0 -lpangox-1.0 -lpango-1.0 -lgobject-2.0
-lgmodule-2.0 -lgthread-2.0 -lglib-2.0 -lXinerama -lXxf86vm -lpng -ljpeg
-ltiff -lexpat -lwxregexud_pga3-2.6 -lz -ldl -lm


> I'll take another look at this and see if we can't make some
> improvements, but the acinclude.m4 has to be able to handle all the
> one-offs, which usually requires a lot of manual checking, but we'll
> see what we can do!

thanks! :)

Raphaël