Build library objects in the SConscript variant_dir.

SCons has a feature that lets you declare a repository-root absolute
path to a file (e.g. "#lib/soundtouch/..."). Using this feature
prevents SCons from automatically re-directing built artifacts to a
variant_dir. To work around this, this commit moves src/SConscript and
src/SConscript.env to the root, and changes all paths in SConscripts
to use SConscript-relative paths.

This commit also switches to building an explicit static library for
vamp-hostdk, vamp-sdk, and soundtouch when internal linking is enabled
and the VAMP plugin now uses the system soundtouch if it is present.

Fixes Bug #1191327 and Bug #1617802.

5 files changed, 50 insertions, 13 deletions

diff --git a/lib/benchmark/SConscript b/lib/benchmark/SConscript
index a105394a99..2dddc2e579 100644
--- a/lib/benchmark/SConscript
+++ b/lib/benchmark/SConscript
@@ -34,7 +34,3 @@ sources = [
 
 benchmark_lib = env.StaticLibrary(target='benchmark',
                                   source=[sources])
-
-# Install the libraries if needed.
-if 'LIB_OUTPUT' in env.Dictionary():
-  env.Install('$LIB_OUTPUT', source=[benchmark_lib])
diff --git a/lib/gmock-1.7.0/SConscript b/lib/gmock-1.7.0/SConscript
index 6bbbf1cbb1..5a293b812a 100644
--- a/lib/gmock-1.7.0/SConscript
+++ b/lib/gmock-1.7.0/SConscript
@@ -25,8 +25,3 @@ gmock = env.StaticLibrary(target='gmock',
 # it is also used by the tests for Google Mock itself.
 gmock_main = env.StaticLibrary(target='gmock_main',
                                source=gmock_main_sources)
-
-# Install the libraries if needed.
-if 'LIB_OUTPUT' in env.Dictionary():
-    env.Install('$LIB_OUTPUT', source=[gmock, gmock_main])
-
diff --git a/lib/gtest-1.7.0/SConscript b/lib/gtest-1.7.0/SConscript
index b8a3986217..303a8fbb9c 100644
--- a/lib/gtest-1.7.0/SConscript
+++ b/lib/gtest-1.7.0/SConscript
@@ -34,7 +34,3 @@ gtest_main_ex_obj = env_with_exceptions.Object(target='gtest_main_ex',
 gtest_ex_main = env_with_exceptions.StaticLibrary(
     target='gtest_ex_main',
     source=gtest_ex_obj + gtest_main_ex_obj)
-
-# Install the libraries if needed.
-if 'LIB_OUTPUT' in env.Dictionary():
-  env.Install('$LIB_OUTPUT', source=[gtest, gtest_main, gtest_ex_main])
diff --git a/lib/soundtouch/SConscript b/lib/soundtouch/SConscript
new file mode 100644
index 0000000000..1df1e68b28
--- /dev/null
+++ b/lib/soundtouch/SConscript
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+
+Import('env')
+env = env.Clone()
+
+soundtouch_sources = [
+  'AAFilter.cpp',
+  'BPMDetect.cpp',
+  'FIFOSampleBuffer.cpp',
+  'FIRFilter.cpp',
+  'InterpolateCubic.cpp',
+  'InterpolateLinear.cpp',
+  'InterpolateShannon.cpp',
+  'PeakFinder.cpp',
+  'RateTransposer.cpp',
+  'SoundTouch.cpp',
+  'TDStretch.cpp',
+  # SoundTouch CPU optimizations are only for x86
+  # architectures. SoundTouch automatically ignores these files
+  # when it is not being built for an architecture that supports
+  # them.
+  'cpu_detect_x86.cpp',
+  'mmx_optimized.cpp',
+  'sse_optimized.cpp',
+]
+
+env.StaticLibrary(target='soundtouch', source=soundtouch_sources)
diff --git a/lib/vamp/SConscript b/lib/vamp/SConscript
new file mode 100644
index 0000000000..ccc4734d1b
--- /dev/null
+++ b/lib/vamp/SConscript
@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+Import('env')
+env = env.Clone()
+
+env.Prepend(CPPPATH = ['.'])
+
+env.StaticLibrary('vamp-hostsdk', [
+  'src/vamp-hostsdk/Files.cpp',
+  'src/vamp-hostsdk/PluginBufferingAdapter.cpp',
+  'src/vamp-hostsdk/PluginChannelAdapter.cpp',
+  'src/vamp-hostsdk/PluginHostAdapter.cpp',
+  'src/vamp-hostsdk/PluginInputDomainAdapter.cpp',
+  'src/vamp-hostsdk/PluginLoader.cpp',
+  'src/vamp-hostsdk/PluginSummarisingAdapter.cpp',
+  'src/vamp-hostsdk/PluginWrapper.cpp',
+  'src/vamp-hostsdk/RealTime.cpp'
+])
+
+env.StaticLibrary('vamp-sdk', [
+  'src/vamp-sdk/PluginAdapter.cpp',
+  'src/vamp-sdk/RealTime.cpp',
+])