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    <p>My answer works best in tandem with <a href="https://stackoverflow.com/users/1161878/gene">Gene</a>'s answer.</p> <p><code>./configure</code>'s creation of the config file is based on compiling (and possibly running) small snippets of <code>C</code> code for each test. The success of each test sets a corresponding variable in the <code>config.h.in</code> template to create the <code>config.h</code>. The compile-only tests can be successfully tested in a cross-compile environment. However, the compile <em>and</em> run tests are impossible to run in a cross-compile environment. </p> <p>Thus, to start the conversion process, you'll need to set the environment variables <code>CPP</code>,<code>CC</code>,<code>LD</code> and other tool aliases to the cross-compiler set of tools (probably the ones from the <code>NDK</code>) and then run <code>./configure</code>. Once this is done, then you'll need to correct the <code>config.h</code> to match your target environment. <strong>This is your most critical and most error prone step.</strong></p> <p>As for the <code>Android.mk</code>, it follows a format quite close to <code>Makefile.am</code> which can be easily converted into it. You can ignore the <code>Makefile.in</code> and the <code>Makefile</code>, as they are generated from the <code>Makefile.am</code>.</p> <p>To take an example of <a href="http://www.darwinsys.com/file/" rel="nofollow noreferrer">file</a> (version 5.11), I ran configure with the following options,</p> <pre><code>./configure --host arm-toshiba-linux-androideabi --build x86_64-linux-gnu \ --prefix=/data/local/ host_alias=arm-linux-androideabi \ "CFLAGS=--sysroot=~/ndk/platforms/android-8/arch-arm -Wall -Wextra" \ "CPPFLAGS=--sysroot=~/ndk/platforms/android-8/arch-arm" \ CPP=arm-linux-androideabi-cpp </code></pre> <p>The next step was to take the <code>src/Makefile.am</code> as below:</p> <pre><code>MAGIC = $(pkgdatadir)/magic lib_LTLIBRARIES = libmagic.la include_HEADERS = magic.h bin_PROGRAMS = file AM_CPPFLAGS = -DMAGIC='"$(MAGIC)"' AM_CFLAGS = $(CFLAG_VISIBILITY) @WARNINGS@ libmagic_la_SOURCES = magic.c apprentice.c softmagic.c ascmagic.c \ encoding.c compress.c is_tar.c readelf.c print.c fsmagic.c \ funcs.c file.h readelf.h tar.h apptype.c \ file_opts.h elfclass.h mygetopt.h cdf.c cdf_time.c readcdf.c cdf.h libmagic_la_LDFLAGS = -no-undefined -version-info 1:0:0 if MINGW MINGWLIBS = -lgnurx -lshlwapi else MINGWLIBS = endif libmagic_la_LIBADD = $(LTLIBOBJS) $(MINGWLIBS) file_SOURCES = file.c file_LDADD = libmagic.la CLEANFILES = magic.h EXTRA_DIST = magic.h.in HDR= $(top_srcdir)/src/magic.h.in BUILT_SOURCES = magic.h magic.h: ${HDR} sed -e "s/X.YY/$$(echo @VERSION@ | tr -d .)/" &lt; ${HDR} &gt; $@ </code></pre> <p>And create the <code>Android.mk</code> from this.</p> <p>The last and most important step was to modify the <code>config.h</code> to accurately reflect the state of the target system. This will be a manual process which I cannot give a workaround for, mainly involving looking into the configure.log, looking into the headers and "invoking" Google. The fruits of this labour are available <a href="http://forum.xda-developers.com/showthread.php?t=1612760" rel="nofollow noreferrer">on XDA</a>.</p>
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