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configure: made the functions to try lib link+compile more generic

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The function can have a wider use, so moved then to a more neutral place
and gave them more generic names.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
This commit is contained in:
Christophe CURIS
2013-11-17 18:51:11 +01:00
committed by Carlos R. Mafra
parent 6184c955e7
commit fbe202f49b
2 changed files with 61 additions and 60 deletions
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43
m4/windowmaker.m4
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@@ -59,3 +59,46 @@ else
fi
CPPFLAGS="$CPPFLAGS_old"
])
dnl _WM_LIB_CHECK_FUNCTS
dnl -----------------------
dnl (internal shell functions)
dnl
dnl Create 2 shell functions:
dnl wm_fn_imgfmt_try_link: try to link against library
dnl wm_fn_imgfmt_try_compile: try to compile against header
dnl
AC_DEFUN_ONCE([_WM_LIB_CHECK_FUNCTS],
[@%:@ wm_fn_lib_try_link FUNCTION LFLAGS
@%:@ ----------------------------------
@%:@ Try linking against library in $LFLAGS using function named $FUNCTION
@%:@ Assumes that LIBS have been saved in 'wm_save_LIBS' by caller
wm_fn_lib_try_link ()
{
LIBS="$wm_save_LIBS $[]2"
AC_TRY_LINK_FUNC([$[]1],
[wm_retval=0],
[wm_retval=1])
AS_SET_STATUS([$wm_retval])
}
@%:@ wm_fn_lib_try_compile HEADER GVARDEF FUNC_CALL CFLAGS
@%:@ -----------------------------------------------------
@%:@ Try to compile using header $HEADER and trying to call a function
@%:@ using the $FUNC_CALL expression and using extra $CFLAGS in the
@%:@ compiler's command line; GVARDEF can be used to include one line
@%:@ in the global context of the source.
@%:@ Assumes that CFLAGS have been saved in 'wm_save_CFLAGS' by caller
wm_fn_lib_try_compile ()
{
CFLAGS="$wm_save_CFLAGS $[]4"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([@%:@include <$[]1>
$[]2], [ $[]3;])],
[wm_retval=0],
[wm_retval=1])
AS_SET_STATUS([$wm_retval])
}
])