Fix compilation in Visual C++ 2013.
I had to fix the following things to make Ceres compile in 2013:
* Not link to 'm' (GNU math library).
* Excplicitly convert an std::ostream to bool.
* Include <algorithm> for std::max.
Change-Id: I3ff65413baf8711364360d46dd71fd553fa63e72
diff --git a/examples/pgm_image.h b/examples/pgm_image.h
index 15e99e4..1328d75 100644
--- a/examples/pgm_image.h
+++ b/examples/pgm_image.h
@@ -197,7 +197,7 @@
outputfile << static_cast<int>(data_[i] + 0.5) << ' ';
}
- return outputfile; // Returns true/false
+ return bool(outputfile); // Returns true/false
}
namespace {
