AX_CONFIGURE_ARGS
Helper macro for AX_ENABLE_BUILDDIR.
The traditional way of starting a subdir-configure is running the script with ${1+"$@"} but since autoconf 2.60 this is broken. Instead we have to rely on eval’ing $ac_configure_args however some old autoconf versions do not provide that. To ensure maximum portability of autoconf extension macros this helper can be AC_REQUIRE’d so that $ac_configure_args will always be present.
Sadly, the traditional "exec $SHELL" of the enable_builddir macros is spoiled now and must be replaced by "eval + exit $?".
Example:
AC_DEFUN([AX_ENABLE_SUBDIR],[dnl
AC_REQUIRE([AX_CONFIGURE_ARGS])dnl
eval $SHELL $ac_configure_args || exit $?
...])
Download the latest version of ax_configure_args.m4 or browse the macro’s revision history.
Copyright © 2008 Guido U. Draheim guidod@gmx.de
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