Re: gd.trm issue for mingw-gcc-4.3.0 building

[Ethan A M. <merritt@u.washington.edu>]

On Wednesday 17 December 2008, Tatsuro MATSUOKA wrote:
> Hello Ethan and Petr
> 
> Thank you for your replies. 
> 
> From the config.log, the configure script of the gd-2.0.36RC1 searches both libiconv and fontconfig.
> 
> The gd-2.0.36RC1 is the latest gd source except for that on cvs-trees.

OK. I have now read the source files for gd-2.0.36RC1.
I see that libiconv is optional, and used only by the file:

/* gdkanji.c (Kanji code converter)                            */
/*                 written by Masahito Yamaga (ma...@ya...) */

I think this is only relevant if you need conversion from SJIS encoding,
because kanji use works on my UTF8-based machines without using libiconv.
The ./configure script for libgd searches for libiconv on your system
when building libgd, and includes this optional code only if it is found.

	Ethan



> ****************
> The configure and make were executed using gcc-3.4.5 with the latest mingw runtime and win32api.
> (mingw runtime 3.15.1 and w32api-3.13)
> 
> ./configure --prefix=/usr/local/gd-2.0.36RC1 --disable-shared
> 
> Here I refer small part of config.log for gd-2.0.36RC1
> 
> configure:21662: gcc -o conftest.exe -g -O2 -DNONDLL -I/mingw/include -I/GnuWin32/include
> -I/WinDevTools/include -L/mingw/lib -L/GnuWin32/lib -L/WinDevTools/lib conftest.c 
> /GnuWin32/lib/libiconv.dll.a -Wl,-rpath -Wl,/GnuWin32/lib >&5
> configure:21668: $? = 0
> configure:21689: result: yes
> 
> The libiconv used is libiconv-1.9.2 on GnuWin32.
> 
> configure:23234: checking for FcInit in -lfontconfig
> configure:23269: gcc -o conftest.exe -g -O2 -IC:/Programs/GnuWin32/include/freetype2
> -IC:/Programs/GnuWin32/include -DNONDLL -I/mingw/include -I/GnuWin32/include -I/WinDevTools/include
> -I/GnuWin32/include/libpng12  -LC:/Programs/GnuWin32/lib -LC:/Programs/GnuWin32/lib -Wl,-s
> -LD:/Progra~1/GnuWin32/lib  -L/GnuWin32/bin/lib -L/mingw/lib -L/GnuWin32/lib -L/WinDevTools/lib
> conftest.c -lfontconfig  -lfreetype -lpng12 -lz  >&5
> configure:23275: $? = 0
> configure:23293: result: yes
> 
> The fontconfig used is fontconfig-2.4.2 on the GTK web page.
> GTK+ for windows
> http://www.gtk.org/download-windows.html
> 
> Regards
> 
> Tatsuro
> 
> 
> --- Ethan A Merritt <merritt@u.washington.edu> wrote:
> 
> > On Tuesday 16 December 2008, Petr Mikulik wrote:
> > > > I have been struggling to build gd libraries for these days.  Today I have succeeded to
> > build
> > > > gd-2.0.36RC1 static library and get rid of the problem of mingw-gcc-4.3.0 building.
> > > > 
> > > > No modification has not been required for gd.trm.
> > > > 
> > > > However it is required to add '-lfontcongfig -liconv' to linker flag in makefile.mgw.
> > > > (This is required regardless gcc version.)
> > > >
> > > > Where is the suitable place to add the flags: '-lfontconfig -liconv' ?
> > > 
> > > I use an older static version of gd and these flags cannot be used (no 
> > > iconv.a).
> > >  
> > > > Temporary I modified  
> > > > 
> > > > ifdef FREETYPE
> > > >   CFLAGS += -DHAVE_GD_TTF
> > > >   TERMLIBS += -lfreetype
> > > > endif
> > > >  |
> > > >  V
> > > > ifdef FREETYPE
> > > >   CFLAGS += -DHAVE_GD_TTF
> > > >   TERMLIBS += -lfreetype -lfontconfig -liconv
> > > > endif
> > > > 
> > > > But it seem not so good to do it.
> > > 
> > > Aha, so you need them for your version of freetype, not for gd.
> > 
> > libgd requires freetype.
> > libgd also requires fontconfig.
> > 
> > I think it is correct to put them both in TERMLIBS as shown above.
> > 
> > > Where do fontconfig.a and iconv.a come from?
> > 
> > fontconfig is required by libgd directly
> > 
> > iconv is used for character encoding conversions and internationalization, 
> > but I don't know why there is a dependency in this case. In fact, I don't
> > even have a libiconv on my machines, it is a stand-alone utility.
> > 
> > 
> > -- 
> > Ethan A Merritt
> > Biomolecular Structure Center
> > University of Washington, Seattle 98195-7742
> > 
> 
> 
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-- 
Ethan A Merritt