From: Modestas Vainius <modestas@vainius.eu>
Date: Fri, 2 Jul 2010 02:11:24 +0000 (+0300)
Subject: Add support for running tests in parallel to the cmake build system.
X-Git-Tag: 8.9.4~4
X-Git-Url: https://git.donarmstrong.com/?p=debhelper.git;a=commitdiff_plain;h=0f5a8c3b6f2c0687b55468edc0f26bf2a4df95e9

Add support for running tests in parallel to the cmake build system.

Pass appropriate -jN option to ctest (via ARGS variable in the Makefile) to
enable support for running tests in parallel. Similarly to makefile build
system, ctest -j1 mode is enforced even when parallel mode in debhelper is not
explicitly enabled.

Unlike make, CTest does not have "unlimited parallel" setting (-j implies -j1).
So in order to simulate unlimited parallel, allow to fork a huge number of
threads instead.
---

diff --git a/Debian/Debhelper/Buildsystem/cmake.pm b/Debian/Debhelper/Buildsystem/cmake.pm
index 9e40cb7..cddd4b4 100644
--- a/Debian/Debhelper/Buildsystem/cmake.pm
+++ b/Debian/Debhelper/Buildsystem/cmake.pm
@@ -58,8 +58,12 @@ sub configure {
 sub test {
 	my $this=shift;
 
+	# Unlike make, CTest does not have "unlimited parallel" setting (-j implies
+	# -j1). So in order to simulate unlimited parallel, allow to fork a huge
+	# number of threads instead.
+	my $parallel = ($this->get_parallel() > 0) ? $this->get_parallel() : 999;
 	$ENV{CTEST_OUTPUT_ON_FAILURE} = 1;
-	return $this->SUPER::test(@_);
+	return $this->SUPER::test(@_, "ARGS+=-j$parallel");
 }
 
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