Find Boost dep when there is an extra lib to link

There are several components in Boost which must be linked with extra
libraries. Boost Log is one of them and in special circumstances needs
linking with boost_log_setup.

http://www.boost.org/doc/libs/1_64_0/libs/log/doc/html/log/detailed/utilities.html#log.detailed.utilities.setup

This fix covers the case when there is no source file corresponding to
the additional library.

3 files changed, 33 insertions, 1 deletions

diff --git a/mesonbuild/dependencies/misc.py b/mesonbuild/dependencies/misc.py
index e9effc6..0112fd3 100644
--- a/mesonbuild/dependencies/misc.py
+++ b/mesonbuild/dependencies/misc.py
@@ -142,7 +142,7 @@ class BoostDependency(ExternalDependency):
 
     def validate_requested(self):
         for m in self.requested_modules:
-            if m not in self.src_modules:
+            if m not in self.src_modules and m not in self.lib_modules and m + '-mt' not in self.lib_modules_mt:
                 msg = 'Requested Boost module {!r} not found'
                 raise DependencyException(msg.format(m))
 
diff --git a/test cases/frameworks/1 boost/extralib.cpp b/test cases/frameworks/1 boost/extralib.cpp
new file mode 100644
index 0000000..6a3e9e4
--- /dev/null
+++ b/test cases/frameworks/1 boost/extralib.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <boost/log/trivial.hpp>
+#include <boost/log/expressions.hpp>
+#include <boost/log/utility/setup/console.hpp>
+#include <boost/log/utility/setup/common_attributes.hpp>
+
+using namespace std;
+namespace logging = boost::log;
+
+void InitLogger() {
+  logging::add_common_attributes();
+  logging::register_simple_formatter_factory<logging::trivial::severity_level, char>("Severity");
+  string log_format = "%TimeStamp% [%Severity%] - %Message%";
+
+  logging::add_console_log(
+    cout,
+    logging::keywords::format = log_format
+  );
+}
+
+int main(int argc, char **argv) {
+  InitLogger();
+  BOOST_LOG_TRIVIAL(trace) << "SOMETHING";
+  return 0;
+}
diff --git a/test cases/frameworks/1 boost/meson.build b/test cases/frameworks/1 boost/meson.build
index 338dd78..6f25f8b 100644
--- a/test cases/frameworks/1 boost/meson.build
+++ b/test cases/frameworks/1 boost/meson.build
@@ -1,6 +1,10 @@
 project('boosttest', 'cpp',
   default_options : ['cpp_std=c++11'])
 
+add_project_arguments(['-DBOOST_LOG_DYN_LINK'],
+  language : 'cpp'
+)
+
 # We want to have multiple separate configurations of Boost
 # within one project. The need to be independent of each other.
 # Use one without a library dependency and one with it.
@@ -10,15 +14,18 @@ linkdep = dependency('boost', modules : ['thread', 'system'])
 staticdep = dependency('boost', modules : ['thread', 'system'], static : true)
 testdep = dependency('boost', modules : 'test')
 nomoddep = dependency('boost')
+extralibdep = dependency('boost', modules : ['thread', 'system', 'log_setup', 'log'])
 
 nolinkexe = executable('nolinkedexe', 'nolinkexe.cc', dependencies : nolinkdep)
 linkexe = executable('linkedexe', 'linkexe.cc', dependencies : linkdep)
 staticexe = executable('staticlinkedexe', 'linkexe.cc', dependencies : staticdep)
 unitexe = executable('utf', 'unit_test.cpp', dependencies: testdep)
 nomodexe = executable('nomod', 'nomod.cpp', dependencies : nomoddep)
+extralibexe = executable('extralibexe', 'extralib.cpp', dependencies : extralibdep)
 
 test('Boost nolinktest', nolinkexe)
 test('Boost linktest', linkexe)
 test('Boost statictest', staticexe)
 test('Boost UTF test', unitexe)
 test('Boost nomod', nomodexe)
+test('Boost extralib test', extralibexe)