Cross-compiling and configure.ac macros
jasone at canonware.com
Thu Apr 14 23:11:15 PDT 2011
On 04/14/2011 05:16 AM, Andreas Vinsander wrote:
> I am trying to cross-compile jemalloc for evaluation on an embedded
> device running a Linux home brew distro.
> I have some problems with the way jemalloc tests for various support
> of the host (target) system.
For a first pass, can you run configure without the cross compiler
specified, then hack up Makefile and include/jemalloc/jemalloc_defs.h to
do the right thing for your platform?
> So far I have modified jemalloc-2.2.1 configure.ac as seen in the
> attached patch, but there still exists a call to AC_RUN_IFELSE.
The one remaining AC_RUN_IFELSE is for page size detection, right? I
think it's reasonable to just specify a default of 12 (and maybe even
allow an environment variable to override that default) if the test fails.
> What is the best way to handle it? To use autoconf cache and supply a
> default value when cross-compiling?
How would the autoconf cache help here? Isn't it still necessary for
the test to have successfully run at some point for the cache to have a
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