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Diffstat (limited to 'Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_expand_prefix.m4')
-rw-r--r-- | Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_expand_prefix.m4 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_expand_prefix.m4 b/Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_expand_prefix.m4 new file mode 100644 index 00000000000..2d6b39d06c9 --- /dev/null +++ b/Build/source/libs/zziplib/zziplib-0.13.59/m4/ax_expand_prefix.m4 @@ -0,0 +1,35 @@ +dnl /usr/share/aclocal/guidod-cvs/ax_expand_prefix.m4 +dnl @synopsis AX_EXPAND_PREFIX +dnl +dnl when $prefix and $exec_prefix are still set to NONE then set them +dnl to the usual default values - being based on $ac_default_prefix. - +dnl this macro can be AC_REQUIREd by other macros that need to compute +dnl values for installation directories. It has been observed that it +dnl was done wrong over and over again, so this is a bit more safe to +dnl do. +dnl +dnl remember - setting exec_prefix='${prefix}' needs you interpolate +dnl directories multiple times, it is not sufficient to just say +dnl MYVAR="${datadir}/putter" but you do have to run `eval` a few +dnl times, sth. like MYVAR=`eval "echo \"$MYVAR\""` done atleast two +dnl times. +dnl +dnl The implementation of this macro simply picks up the lines that +dnl would be run at the start of AC_OUTPUT anyway to set the +dnl prefix/exec_prefix defaults. Between AC_INIT and the first command +dnl to AC_REQUIRE this macro you can set the two variables to something +dnl explicit instead. Probably, any command to compute installation +dnl directories should be run _after_ AM_INIT_AUTOMAKE +dnl +dnl @category Misc +dnl @author Guido U. Draheim <guidod@gmx.de> +dnl @version 2005-01-21 +dnl @license GPLWithACException + +AC_DEFUN([AX_EXPAND_PREFIX],[dnl + # The prefix default can be set in configure.ac (otherwise it is /usr/local) + test "x$prefix" = xNONE && prefix=$ac_default_prefix + # Let make expand exec_prefix. Allows to override the makevar 'prefix' later + test "x$exec_prefix" = xNONE && exec_prefix='${prefix}' +]) + |