7 files changed, 98 insertions, 4 deletions
diff --git a/odb/boost/details/build2/config-stub.h b/odb/boost/details/build2/config-stub.h
new file mode 100644
index 0000000..0b03d9b
--- /dev/null
+++ b/odb/boost/details/build2/config-stub.h
@@ -0,0 +1,6 @@
+/* file      : odb/boost/details/build2/config-stub.h
+ * copyright : Copyright (c) 2009-2019 Code Synthesis Tools CC
+ * license   : GNU GPL v2; see accompanying LICENSE file
+ */
+
+#include <odb/boost/details/config.h>
diff --git a/odb/boost/details/build2/config-vc-stub.h b/odb/boost/details/build2/config-vc-stub.h
new file mode 100644
index 0000000..541cfba
--- /dev/null
+++ b/odb/boost/details/build2/config-vc-stub.h
@@ -0,0 +1,6 @@
+/* file      : odb/boost/details/build2/config-vc-stub.h
+ * copyright : Copyright (c) 2009-2019 Code Synthesis Tools CC
+ * license   : GNU GPL v2; see accompanying LICENSE file
+ */
+
+#include <odb/boost/details/config-vc.h>
diff --git a/odb/boost/details/build2/config-vc.h b/odb/boost/details/build2/config-vc.h
new file mode 100644
index 0000000..568c517
--- /dev/null
+++ b/odb/boost/details/build2/config-vc.h
@@ -0,0 +1,16 @@
+/* file      : odb/boost/details/build2/config-vc.h
+ * copyright : Copyright (c) 2009-2019 Code Synthesis Tools CC
+ * license   : GNU GPL v2; see accompanying LICENSE file
+ */
+
+/* Configuration file for Windows/VC++ for the build2 build. */
+
+#ifndef ODB_BOOST_DETAILS_CONFIG_VC_H
+#define ODB_BOOST_DETAILS_CONFIG_VC_H
+
+/* Define LIBODB_BOOST_BUILD2 for the installed case. */
+#ifndef LIBODB_BOOST_BUILD2
+#  define LIBODB_BOOST_BUILD2
+#endif
+
+#endif /* ODB_BOOST_DETAILS_CONFIG_VC_H */
diff --git a/odb/boost/details/build2/config.h b/odb/boost/details/build2/config.h
new file mode 100644
index 0000000..7de8128
--- /dev/null
+++ b/odb/boost/details/build2/config.h
@@ -0,0 +1,18 @@
+/* file      : odb/boost/details/build2/config.h
+ * copyright : Copyright (c) 2009-2019 Code Synthesis Tools CC
+ * license   : GNU GPL v2; see accompanying LICENSE file
+ */
+
+/* Static configuration file for the build2 build. The installed case
+   (when LIBODB_BOOST_BUILD2 is not necessarily defined) is the only
+   reason we have it. */
+
+#ifndef ODB_BOOST_DETAILS_CONFIG_H
+#define ODB_BOOST_DETAILS_CONFIG_H
+
+/* Define LIBODB_BOOST_BUILD2 for the installed case. */
+#ifndef LIBODB_BOOST_BUILD2
+#  define LIBODB_BOOST_BUILD2
+#endif
+
+#endif /* ODB_BOOST_DETAILS_CONFIG_H */
diff --git a/odb/boost/details/config-vc.h b/odb/boost/details/config-vc.h
new file mode 100644
index 0000000..4212314
--- /dev/null
+++ b/odb/boost/details/config-vc.h
@@ -0,0 +1,6 @@
+/* file      : odb/boost/details/config-vc.h
+ * copyright : Copyright (c) 2009-2019 Code Synthesis Tools CC
+ * license   : GNU GPL v2; see accompanying LICENSE file
+ */
+
+/* Dummy configuration file for Windows/VC++. */
diff --git a/odb/boost/details/config.hxx b/odb/boost/details/config.hxx
index bc9db32..a637f44 100644
--- a/odb/boost/details/config.hxx
+++ b/odb/boost/details/config.hxx
@@ -7,11 +7,14 @@
 
 // no pre
 
-#ifdef _MSC_VER
-#elif defined(ODB_COMPILER)
+#ifdef ODB_COMPILER
 #  define LIBODB_BOOST_STATIC_LIB
-#else
-#  include <odb/boost/details/config.h>
+#elif !defined(LIBODB_BOOST_BUILD2)
+#  ifdef _MSC_VER
+#    include <odb/boost/details/config-vc.h>
+#  else
+#    include <odb/boost/details/config.h>
+#  endif
 #endif
 
 // no post
diff --git a/odb/boost/details/export.hxx b/odb/boost/details/export.hxx
index b5d4282..9b96a30 100644
--- a/odb/boost/details/export.hxx
+++ b/odb/boost/details/export.hxx
@@ -9,6 +9,43 @@
 
 #include <odb/boost/details/config.hxx>
 
+// Normally we don't export class templates (but do complete specializations),
+// inline functions, and classes with only inline member functions. Exporting
+// classes that inherit from non-exported/imported bases (e.g., std::string)
+// will end up badly. The only known workarounds are to not inherit or to not
+// export. Also, MinGW GCC doesn't like seeing non-exported function being
+// used before their inline definition. The workaround is to reorder code. In
+// the end it's all trial and error.
+
+#ifdef LIBODB_BOOST_BUILD2
+
+#if defined(LIBODB_BOOST_STATIC)         // Using static.
+#  define LIBODB_BOOST_EXPORT
+#elif defined(LIBODB_BOOST_STATIC_BUILD) // Building static.
+#  define LIBODB_BOOST_EXPORT
+#elif defined(LIBODB_BOOST_SHARED)       // Using shared.
+#  ifdef _WIN32
+#    define LIBODB_BOOST_EXPORT __declspec(dllimport)
+#  else
+#    define LIBODB_BOOST_EXPORT
+#  endif
+#elif defined(LIBODB_BOOST_SHARED_BUILD) // Building shared.
+#  ifdef _WIN32
+#    define LIBODB_BOOST_EXPORT __declspec(dllexport)
+#  else
+#    define LIBODB_BOOST_EXPORT
+#  endif
+#else
+// If none of the above macros are defined, then we assume we are being used
+// by some third-party build system that cannot/doesn't signal the library
+// type. Note that this fallback works for both static and shared but in case
+// of shared will be sub-optimal compared to having dllimport.
+//
+#  define LIBODB_BOOST_EXPORT            // Using static or shared.
+#endif
+
+#else // LIBODB_BOOST_BUILD2
+
 #ifdef LIBODB_BOOST_STATIC_LIB
 #  define LIBODB_BOOST_EXPORT
 #else
@@ -35,6 +72,8 @@
 #  endif
 #endif
 
+#endif // LIBODB_BOOST_BUILD2
+
 #include <odb/post.hxx>
 
 #endif // ODB_BOOST_DETAILS_EXPORT_HXX