Christophe CURIS f892ce4d37 configure: Moved detection of GIF support to a dedicated macro ...

The original check was not compliant with autoconf's syntax, did not
have a very good behaviour for user and was not easy to make evolve.

The new macro:
 - uses as much as possible autoconf macros for portability and code
consistency;
 - provides a consistent behaviour on yes/no/auto (if user explicitly
enables support, do not silently disable if not found; if library is found
but not the header, complain to let user install it or explicitly disable
support);
 - makes uses of shell functions to keep generated configure smaller by
sharing reusable stuff;
 - introduces a tracking of unsupported things to be reported to user

It includes a fixes from a problem found by Amadeusz S-B³awiñski, because-A
the function 'wm_fn_imgfmt_try_link' modified the variable LDFLAGS
instead of LIBS.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

2013-12-30 18:11:02 +00:00

..

ax_cflags_gcc_option.m4

Autoconf mods

2010-04-01 11:40:08 +02:00

ld-version-script.m4

Import ld-version-script.m4 from gnulib

2010-08-29 18:38:21 +02:00

windowmaker.m4

Autoconf mods

2010-04-01 11:40:08 +02:00

wm_attributes.m4

Configure: Added check for compiler attribute 'noreturn'

2013-06-09 18:46:56 +01:00

wm_imgfmt_check.m4

configure: Moved detection of GIF support to a dedicated macro

2013-12-30 18:11:02 +00:00

wm_libmath.m4

Configure: Added explicit check for math library header

2013-06-17 01:54:06 +01:00