diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 37 |
1 files changed, 37 insertions, 0 deletions
@@ -47,8 +47,31 @@ GNU Autoconf NEWS - User visible changes. - AC_REQUIRE cannot be applied to macros that need to be used with arguments. Instead, invoke the macro normally, with its arguments. +*** More macros use config.sub and config.guess internally. + + As a consequence of improved support for cross compilation (see below), + more macros now use the auxiliary scripts ‘config.sub’ and ‘config.guess’. + If you use any of the affected macros, these scripts must be available + when your configure script is run, even if you have no intention of + ever cross-compiling your program. + + If you are using Automake, the auxiliary scripts your configure script + needs will be added to your source tree by ‘autoreconf --install’ or + ‘automake --add-missing’, and will be automatically included in your + distribution tarball. If you are not using Automake, you will need + to add them yourself. See the “Input” section of the manual for + where to get the auxiliary scripts that may be needed by autoconf macros. + *** Older versions of automake and aclocal (< 1.8) are no longer supported. +*** AC_CONFIG_SUBDIRS no longer directly supports Cygnus configure. + + If you are still using an Autoconf script to drive configuration of + a multi-package build tree where some subdirectories use Cygnus + configure, copy or link $ac_aux_dir/configure into each subdirectory + where it is needed. Please also contact us; we were under the + impression nobody used this very old tool anymore. + *** AC_CHECK_HEADER and AC_CHECK_HEADERS only do a compilation test. This completes the transition from preprocessor-based header tests @@ -188,6 +211,20 @@ GNU Autoconf NEWS - User visible changes. useful effect is to trigger those checks, with this macro. It is unlikely to be useful otherwise. +*** AC_REQUIRE_AUX_FILE has been improved. + + Configure scripts now check, on startup, for the availability of all + the aux files that were mentioned in an AC_REQUIRE_AUX_FILE + invocation. This should help prevent certain classes of packaging + errors. + + Also, it is no longer necessary for third-party macros that use + AC_REQUIRE_AUX_FILE to mention AC_CONFIG_AUX_DIR_DEFAULT. However, + if you are using AC_CONFIG_AUX_DIR_DEFAULT *without* also using + AC_REQUIRE_AUX_FILE, please start using AC_REQUIRE_AUX_FILE to + specify the aux files you actually need, so that the check can be + effective. + ** Obsolete features and new warnings *** Use of the long-deprecated name ‘configure.in’ for the autoconf |