The new ios/configure script performs a separate ../configure for each of
the following iOS targets:
iPhoneOS on armv7
iPhoneOS on arm64
iPhoneSimulator on i386
iPhoneSimulator on x86_64
The script then creates ios/Makefile that builds a static iOS Framework
Bundle suitable for inclusion in an Xcode iOS project.
Add the --xcode-sdk=SDK option to configure.ac, to support cross
compiling using Apple Xcode. It prefixes all compile/link toolchain
commands with the "xcrun --sdk SDK" command, ie, CC, AS, LD, AR, RANLIB,
etc.
Re-structure headerfiles.mk to separate "public" from "private" headers,
because the Framework module only exposes the public ones. Moves the
SQLITE3_AMALGAMATION definition from Makefile.in into headerfiles.mk.
Update INSTALL.md and add a technical document for Apple iOS.
This enables development of Serval DNA within the context of an Xcode
iOS project using the standard edit-make-test cycle: after modifying a
Serval DNA source file, "cd ios; make" will recompile the changed file
for all the target architectures and update the Framework Bundle.
Rebuilding the Xcode project will then incorporate the changes, which
can be tested immediately.
