imlib2-1.4.2-5 configure fails on 10.8. The following snippet shows the
failure:
checking for X... libraries /usr/X11/lib, headers /usr/X11/include
checking X11/X.h usability... no
checking X11/X.h presence... no
checking for X11/X.h... no
configure: error: no X support found. Use --x-includes and
--x-libraries to specify the X
path on your system, or --without-x to disable X support.
In the config.log file one sees that the test for x11/X.h is done
without any X11 include flags:
configure:13421: checking X11/X.h usability
configure:13421: gcc -c -g -O2 -std=gnu99 conftest.c >&5
conftest.c:57:19: error: X11/X.h: No such file or directory
Thus it first finds the x-includes and x-libs correctly, then makes a
check where it does not use this recently gained information, and then
pretends that it did not find the x-includes and libs. Adding the
suggested configure flags makes no difference.
This is clear brain damage in imlib2's configure.ac script (configure.ac
is used via "autoreconf -fi"). It has the following paragraph:
AC_PATH_X
if test "x$have_x" != "xdisabled"; then
AC_CHECK_HEADER(X11/X.h,
[ have_x="yes" ],
[ have_x="no" ])
fi
If I remove the if..fi part, using a PatchScript line
/usr/bin/sed -i".bak" -e '117,121d' configure.ac
then imlib2 builds OK on 10.8. (P.S. It seems that more recent sources
of imlib2/configure.ac, like 1.4.5 from last year, do not have this
bogus X11/X.h check any more).
The problem was not noticed before because of the presence of the
symlink /usr/include/X11->/usr/X11R6/include/X11, which made the test
for X11/X.h wrongly succeed. This symlink is now gone, and it should
make no difference except for broken code like this one.
--
Martin
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