From f645603783c352c1c6916a6df455f4da660cb1a7 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 17 Dec 2015 01:38:59 +0000
Subject: Improve logic for determining bjam build variant (assumes gcc
 toolset, which is fine)

---
 libadhocutil/definedDirs.h                    | 16 ++++++++++++++--
 libadhocutil/unittests/Jamfile.jam            | 13 +++++++++++++
 libadhocutil/unittests/testDirs.cpp           | 18 ++++++++++++++++++
 libadhocutil/unittests/testPluginsRuntime.cpp |  4 +---
 4 files changed, 46 insertions(+), 5 deletions(-)
 create mode 100644 libadhocutil/unittests/testDirs.cpp

diff --git a/libadhocutil/definedDirs.h b/libadhocutil/definedDirs.h
index b24a1c9..9c1cc84 100644
--- a/libadhocutil/definedDirs.h
+++ b/libadhocutil/definedDirs.h
@@ -10,9 +10,21 @@
 
 #define XSTR(s) STR(s)
 #define STR(s) #s
-const auto selfExe = boost::filesystem::canonical("/proc/self/exe");
-const auto binDir = selfExe.parent_path();
+namespace AdHoc {
+	static boost::filesystem::path getBuildVariant(boost::filesystem::path binDir)
+	{
+		boost::filesystem::path p;
+		while (strncmp(p.c_str(), "gcc-", 4)) {
+			p = binDir.leaf() / p;
+			binDir = binDir.parent_path();
+		}
+		return p;
+	}
+}
+const boost::filesystem::path selfExe = boost::filesystem::canonical("/proc/self/exe");
+const boost::filesystem::path binDir = selfExe.parent_path();
 const boost::filesystem::path rootDir(XSTR(ROOT));
+const boost::filesystem::path buildVariant = AdHoc::getBuildVariant(binDir);
 
 #endif
 
diff --git a/libadhocutil/unittests/Jamfile.jam b/libadhocutil/unittests/Jamfile.jam
index 9f45265..5ea24a8 100644
--- a/libadhocutil/unittests/Jamfile.jam
+++ b/libadhocutil/unittests/Jamfile.jam
@@ -128,6 +128,19 @@ lib utilTestClasses :
 	<library>boost_utf
 	;
 
+run
+	testDirs.cpp
+	: : :
+	<define>BOOST_TEST_DYN_LINK
+	<library>..//adhocutil
+	<library>boost_utf
+	<define>ROOT=\"$(me)\"
+	<library>boost_filesystem
+	<library>boost_system
+	:
+	testDirs
+	;
+
 run
 	testPlugins.cpp
 	: : :
diff --git a/libadhocutil/unittests/testDirs.cpp b/libadhocutil/unittests/testDirs.cpp
new file mode 100644
index 0000000..f215d49
--- /dev/null
+++ b/libadhocutil/unittests/testDirs.cpp
@@ -0,0 +1,18 @@
+#define BOOST_TEST_MODULE Dirs
+#include <boost/test/unit_test.hpp>
+
+#include <definedDirs.h>
+#include <boost/filesystem/convenience.hpp>
+
+BOOST_AUTO_TEST_CASE( iexist )
+{
+	BOOST_REQUIRE(boost::filesystem::exists(selfExe));
+	BOOST_REQUIRE(selfExe.is_absolute());
+	BOOST_REQUIRE_EQUAL("testDirs", selfExe.leaf().string());
+	BOOST_REQUIRE_EQUAL("unittests", rootDir.leaf().string());
+	BOOST_REQUIRE(boost::filesystem::is_directory(binDir));
+	BOOST_REQUIRE_EQUAL("libadhocutil", rootDir.parent_path().leaf().string());
+	BOOST_REQUIRE(buildVariant.is_relative());
+	BOOST_REQUIRE_EQUAL(selfExe, rootDir / "bin" / "testDirs.test" / buildVariant / "testDirs");
+}
+
diff --git a/libadhocutil/unittests/testPluginsRuntime.cpp b/libadhocutil/unittests/testPluginsRuntime.cpp
index aa1dcf1..9185cdc 100644
--- a/libadhocutil/unittests/testPluginsRuntime.cpp
+++ b/libadhocutil/unittests/testPluginsRuntime.cpp
@@ -9,9 +9,7 @@
 
 using namespace AdHoc;
 
-auto variant	= selfExe.parent_path().leaf();
-auto toolset	= selfExe.parent_path().parent_path().leaf();
-auto lib = rootDir / "bin" / toolset / variant / "libutilTestClasses.so";
+auto lib = rootDir / "bin" / buildVariant / "libutilTestClasses.so";
 
 static boost::optional<std::string> nullResolver(const std::type_info &, const std::string &);
 static boost::optional<std::string> badResolver(const std::type_info &, const std::string &);
-- 
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