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Re: Latest configure.in change breaks building

From: Jan Djärv
Subject: Re: Latest configure.in change breaks building
Date: Sun, 28 Jan 2007 10:48:50 +0100
User-agent: Thunderbird (Macintosh/20061207)

Sascha Wilde skrev:
Hi *,

the latest change on configure.in:

2007-01-26  Jan Djärv  <address@hidden>

* configure.in: Add check for libXft.

breaks the build process for me (CVS Head on GNU/Linux with GTK+ frontend):

The new configure tests are successful: checking for xft >= 0.13.0... yes checking XFT_CFLAGS... -I/usr/X11R6/include -I/usr/include/freetype2 checking XFT_LIBS... -L//lib -L/usr/X11R6/lib -lXft -lXrender -lX11 -lXext
-lfontconfig -lfreetype -lz

What is //lib?  It looks broken.

checking X11/Xft/Xft.h usability... yes checking X11/Xft/Xft.h presence...
yes checking for X11/Xft/Xft.h... yes checking for XftFontOpen in -lXft...

But when building various libs seem to be missing when linking emacs:

gcc -nostdlib `./prefix-args -Xlinker  -R/usr/X11R6/lib -z nocombreloc`
-Wl,-znocombreloc -L/usr/X11R6/lib -o temacs pre-crt0.o /usr/lib/crt1.o
/usr/lib/crti.o dispnew.o frame.o scroll.o xdisp.o xmenu.o window.o
charset.o coding.o category.o ccl.o cm.o term.o xfaces.o xterm.o xfns.o
xselect.o xrdb.o fontset.o xsmfns.o fringe.o image.o gtkutil.o emacs.o
keyboard.o macros.o keymap.o sysdep.o buffer.o filelock.o insdel.o marker.o
minibuf.o fileio.o dired.o filemode.o cmds.o casetab.o casefiddle.o
indent.o search.o regex.o undo.o alloc.o data.o doc.o editfns.o callint.o
eval.o floatfns.o fns.o print.o lread.o abbrev.o syntax.o unexelf.o
bytecode.o process.o callproc.o region-cache.o sound.o atimer.o doprnt.o
strftime.o intervals.o textprop.o composite.o md5.o    terminfo.o
lastfile.o   vm-limit.o   mktime.o    -L/usr/X11R6/lib -L/usr/local/lib
-lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lm -lpangocairo-1.0
-lpango-1.0 -lcairo -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0 -lpthread
-lSM -lICE -ltiff -ljpeg -lpng -lz -lm -lungif -lXpm -L  -lncurses   -lm
-lgcc -lc -lgcc /usr/lib/crtn.o dispnew.o: In function `init_display': /usr/local/src/wilde/emacs-hg-work/src/dispnew.c:6782: undefined reference
to `tgetent' cm.o: In function `cmcostinit':

You have -L -lncurses in there. What happens is when the preprocessor reads Makefile.c (generated from Makefile.in), your -L//lib ... is taken as a comment, and everything after // is removed, so you are left with -L.

Please do:

% pkg-config --libs xft

and if there is a // in there, check xft.pc (in /usr/lib/pkgconfig or /usr/X11R6/lib/pkgconfig usually) and see where //lib comes from. My guess is that there is a variable substitution in xft.pc that does not work right.

        Jan D.

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