mirror of
https://github.com/openwrt/openwrt.git
synced 2026-10-12 06:57:57 +04:00
John Crispin
18a2ea702c
Three cases kept a cached answer that no longer held: A new configure script. A package with an autoreconf fixup regenerates configure with the staged autoconf, automake and libtool, and a new version of one of them can change what a cache variable means. The site script now keeps a checksum of configure beside the cache and drops the cache when the checksum changes. A new patch to configure is covered too. A changed precious variable. configure aborts when LIBS, CPP or another precious variable differs from the value in the cache, and because nothing removes the cache, it aborts on every later run as well: configure: error: 'LIBS' was not set in the previous run configure: error: changes in the environment can compromise the build The site script now makes the same comparison before configure does and drops the cache on a difference. Paths under other names. The libtool answers lt_cv_path_*, acl_cv_path_* and lt_cv_sys_global_symbol_*, and gmp_cv_prog_m4, hold the path of a system tool or of the staged sed and m4, and survived a wipe of staging_dir. The site script now drops them with the ac_cv_path_ answers. m4 and gmp still configure the same way with a warm cache as they do without one, and still read it: the m4 configure stage takes 1.5 s warm against 23 s cold. Signed-off-by: John Crispin <john@phrozen.org>
