Cross-compilation how-to

To run the configure script for cross-compilation:

Launch the configure script as follows: 

CC=${CROSS_COMPILER_PATH}/bin/gcc ./configure --prefix=/tmp/123 --host=<ARCH>
where <ARCH> is the target architecture, e.g. arm-linux-gnueabihf.

Alternatively, edit configure and find this line: 

cross_compiling=no
Change no to yes. Note that in the configure script, one can also find the following code snippet: 
if test "x$host_alias" != x; then
  if test "x$build_alias" = x; then
    cross_compiling=maybe
  elif test "x$build_alias" != "x$host_alias"; then
    cross_compiling=yes
  fi
fi
Anyway, make sure cross_compiling is set to no.

Autoconf creation how-to

Commands to create configure and Makefile.in: 
  1. $ aclocal
    From configure.in and Makefile.am, it generates aclocal.m4. 
  2. $ autoconf -v -f
    It generates configure script. 
  3. $ touch AUTHORS NEWS README ChangeLog
    4. Above files must be present or automake will complain. 
  4. $ libtoolize -v -f
    5. This copies/links a few support scripts, including ltmain.sh 
  5. $ autoheader -v -f
    6. This creates acconfig.h.in 
  6. $ automake -a -f
    7. This creates Makefile.in
All done!

Another simpler way to create configure and Makefile.in

$ autoreconf -vif