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Please document on this page about methods for standards testing, compiler validation,
and regression testing.

### OpenBSD regress

OpenBSD's CVS contains code for regression tests for pcc at [/usr/src/regress/usr.bin/pcc/](http://www.openbsd.org/cgi-bin/cvsweb/src/regress/usr.bin/pcc/).

TODO: please document how to use OpenBSD regress

### GCC Testsuite

[[GCC_Testsuite]] can also be used. See [[here|GCC_Testsuite]] for details.

### mcpp's Validation Suite for Standard C Conformance of Preprocessing

The BSD-licensed mcpp (Matsui cpp) at <http://mcpp.sourceforge.net/>
provides the "Validation Suite for Standard C Conformance of Preprocessing".

It comes with cpp\_test tool that can be used to test 265 tests and 
provides scores. The very long ./doc/cpp-test.html document provides 
details how to run cpp\_test tool.

The ./doc/mcpp-summary.pdf file describes the results of the tests versus 
several cpp implementations.

TODO: test this and document here and send results back to the mcpp project to be included in their results.

### Pkgsrc

Pkgsrc package build system can be used with pcc compiler if you want a way to quickly test "pcc" for a lot of "third-party" software (including doing entire bulk builds attempting thousands of packages):

    PKGSRC_COMPILER=pcc

Also set PCCBASE to where your bin/pcc is at (/usr/pkg is the default).

Note that NetBSD's pkgsrc package build system is portable 
and is used as the primary package build system for DragonFly and some 
distributions of Linux as well as NetBSD. It also has support for several 
operating systems.

pkgsrc also has support for selecting a custom compiler suite, including: pcc, Tru64 ccc, 
Intel icc, SGI IRIS, HPUX compiler, SGI's MIPSpro 64 and 32 compilers, Sun 
WorkShip/Forte/Sun ONE Studio, GCC, and IBM's XL compiler. It also has support 
for psuedo compilers: ccache, distcc and f2c.

### Commercial Compiler Testing

Click [[here|Commercial_Validation]] for commercial services that provide compiler validation and testing.

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