Compiling

Compiling the plugin yourself can lead to further speed improvements because the optimization flags used by different compilers vary on different hardware and operating systems. However, this is only recommended on Linux and OSX systems, where compiling is relatively easy. In the Linux server where I use Stata, a locally compiled plugin ran 20-50% faster.

While compiling the plugin locally might also help with troubleshooting if the plugin failed to load, this scenario should be very rare. Most systems should load the pre-compiled plugin; if yours doesn't, please file a bug report.

Requirements

Pro-tip

Install the newest version of gcc to get the most out of compiling the plugin locally.

You will, at a minimum, need

• git
• The GNU Compiler Collection (gcc)

The current version of gtools was compiled using gcc versions 8 (Linux), 7 (OSX), and 5 (Windows). The plugin additionally requires:

However, I keep a copy of Stata's Plugin Interface in this repository, and I have added centaurean's implementation of SpookyHash as a submodule. Hence as long as you have gcc, make, and git, you fill be able to compile the plugin following the instructions below.

On OSX, you can get gcc and make from xcode. On windows, you will need

• Cygwin with gcc, make, x86_64-w64-mingw32-gcc-5.4.0.exe (Cygwin is pretty massive by default; I would install only those packages).

Compilation

git clone https://github.com/mcaceresb/stata-gtools
cd stata-gtools
git submodule update --init --recursive

# Stata 14.0 and earlier
make clean SPI=2.0 SPIVER=v2
make all   SPI=2.0 SPIVER=v2

# Stata 14.1 and later
make clean SPI=3.0 SPIVER=v3
make all   SPI=3.0 SPIVER=v3


Unit tests

From a stata session, run

do build/gtools_tests.do


(Note this can take several hours.) If successful, all tests should report to be passing and the exit message should be "tests finished running" followed by the start and end time.

Troubleshooting

I test the builds using Github Workflows and Appveyor; if both builds are passing and you can't get them to compile, it is likely because you have not installed all the requisite dependencies. For Cygwin in particular, see ./src/plugin/gtools.h for all the include statements and check if you have any missing libraries.

Loading the plugin is a bit trickier. Historically, the plugin has failed on some windows systems and some legacy Linux systems. If this happens please submit a bug report. The Linux issue is largely due to versioning. That is, while the functions I use should be available on most systems, the package versions are too recent for some systems.

Other than that, as best I can tell, all will be fine as long as you use the MinGW version of gcc. That is, x86_64-w64-mingw32-gcc instead of gcc in cygwin for the plugin.