configure: use XC_CONFIGURE_PREAMBLE early checks
authorYang Tse <yangsita@gmail.com>
Wed, 23 Jan 2013 15:54:33 +0000 (16:54 +0100)
committerYang Tse <yangsita@gmail.com>
Wed, 23 Jan 2013 17:20:33 +0000 (18:20 +0100)
commit14e78ad68b50cd472f0e9ce22c1dd9618e2109d6
treeba5bafa9d777b63281875bb6093099ed4540a71b
parentb74bcad7144f23330f66c82ee608b09adcd02f7c
configure: use XC_CONFIGURE_PREAMBLE early checks

Some basic checks we make were placed early enough in generated
configure script when using autoconf 2.5X versions. Newer autoconf
versions expand these checks much further into the configure script,
rendering them useless. Using XC_CONFIGURE_PREAMBLE fixes placement
of early intended checks across all our autoconf supported versions.
configure.ac
m4/cares-override.m4
m4/cares-system.m4 [deleted file]