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+---
+date: 2020-06-02 23:23
+description: Compiling AutoDock Vina on iOS
+tags: iOS, Jailbreak, Cheminformatics, AutoDock Vina, Molecular-Docking
+---
+
+# Compiling AutoDock Vina on iOS
+
+Why? Because I can.
+
+
+## Installing makedepend
+
+`makedepend` is a Unix tool used to generate dependencies of C source files. Most modern programs do not use this anymore, but then again AutoDock Vina's source code hasn't been changed since 2011. The first hurdle came when I saw that there was no makedepend command, neither was there any package on any development repository for iOS. So, I tracked down the original source code for `makedepend` (https://github.com/DerellLicht/makedepend). According to the repository this is actually the source code for the makedepend utility that came with some XWindows distribution back around Y2K. I am pretty sure there is a problem with my current compiler configuration because I had to manually edit the `Makefile` to provide the path to the iOS SDKs using the `-isysroot` flag.
+
+
+## Editing the Makefile
+
+Original Makefile ( I used the provided mac Makefile base )
+
+```
+BASE=/usr/local
+BOOST_VERSION=1_41
+BOOST_INCLUDE = $(BASE)/include
+C_PLATFORM=-arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.4
+GPP=/usr/bin/g++
+C_OPTIONS= -O3 -DNDEBUG
+BOOST_LIB_VERSION=
+
+include ../../makefile_common
+```
+
+I installed Boost 1.68.0-1 from Sam Bingner's repository. ( Otherwise I would have had to compile boost too 😫 )
+
+Edited Makefile
+
+```
+BASE=/usr
+BOOST_VERSION=1_68
+BOOST_INCLUDE = $(BASE)/include
+C_PLATFORM=-arch arm64 -isysroot /var/sdks/Latest.sdk
+GPP=/usr/bin/g++
+C_OPTIONS= -O3 -DNDEBUG
+BOOST_LIB_VERSION=
+
+include ../../makefile_common
+
+```
+
+## Updating the Source Code
+
+Of course since Boost 1.41 many things have been added and deprecated, that is why I had to edit the source code to make it work with version 1.68
+
+### Error 1 - No Matching Constructor
+
+```
+../../../src/main/main.cpp:50:9: error: no matching constructor for initialization of 'path' (aka 'boost::filesystem::path')
+return path(str, boost::filesystem::native);
+```
+
+This was an easy fix, I just commented this and added a return statement to return the path
+
+```
+return path(str)
+```
+
+### Error 2 - No Member Named 'native_file_string'
+
+```
+../../../src/main/main.cpp:665:57: error: no member named 'native_file_string' in 'boost::filesystem::path'
+                std::cerr << "\n\nError: could not open \"" << e.name.native_file_string() << "\" for " << (e.in ? "reading" : "writing") << ".\n";
+                                                               ~~~~~~ ^
+../../../src/main/main.cpp:677:80: error: no member named 'native_file_string' in 'boost::filesystem::path'
+                std::cerr << "\n\nParse error on line " << e.line << " in file \"" << e.file.native_file_string() << "\": " << e.reason << '\n';
+                                                                                      ~~~~~~ ^
+2 errors generated.
+```
+
+Turns out `native_file_string` was deprecated in Boost 1.57 and replaced with just `string`
+
+### Error 3 - Library Not Found
+
+This one still boggles me because there was no reason for it to not work, as a workaround I downloaded the DEB, extracted it and used that path for compiling.
+
+### Error 4 - No Member Named 'native_file_string' Again.
+
+But, this time in another file and I quickly fixed it
+
+## Moment of Truth
+
+Obviously it was working on my iPad, but would it work on another device? I transferred the compiled binary and 
+
+!["AutoDock Vina running on my iPhone"](/assets/posts/autodock-vina/s1.png)
+
+
+The package is available on my repository and only depends on boost. ( Both, Vina and Vina-Split are part of the package)