This fork exists because I wanted to compile 7z so I could extract ISO's from the android shell, but there were issues with the original repo causing it to not build.
I also needed to be able to support files greater than 2GB (indicated by HugeFiles=on vs HugeFiles=off in the top of 7z's output). The reason that files >2GB don't work by default is that 7z uses lseek and off_t rather than their 64 bit equivalents lseek64 and off64_t.
This issue isn't specific to 7z, and as stated in that link, this can typically be solved by using "-D_FILE_OFFSET_BITS=64" in the compiler flags (LOCAL_CFLAGS in ndk). Unfortunately the ndk does not seem to acknowledge that flag in it's current state (althought supposedly it will soon), so I made the replacements manually.
#To build 7z:
cd p7zip-android\p7zip_15.09\CPP\ANDROID\7z\jni
ndk-build
Tested with android-ndk-r14. Other executables (p7zip, 7za, etc) have not been tested.