Add hxx extension for headers and lib prefix for library dirs

4 files changed, 80 insertions, 0 deletions

diff --git a/libprint/buildfile b/libprint/buildfile
new file mode 100644
index 0000000..f7d8a74
--- /dev/null
+++ b/libprint/buildfile
@@ -0,0 +1,21 @@
+lib{print}: {hxx cxx}{print} hxx{export}
+
+# For pre-releases use the complete version to make sure they cannot be used
+# in place of another pre-release or the final version.
+#
+if $version.pre_release
+  lib{print}: bin.lib.version = @"-$version.project_id"
+else
+  lib{print}: bin.lib.version = @"-$version.major.$version.minor"
+
+cxx.poptions =+ "-I$out_root" "-I$src_root"
+obja{*}: cxx.poptions += -DLIBPRINT_STATIC_BUILD
+objs{*}: cxx.poptions += -DLIBPRINT_SHARED_BUILD
+
+lib{print}: cxx.export.poptions = "-I$out_root" "-I$src_root"
+liba{print}: cxx.export.poptions += -DLIBPRINT_STATIC
+libs{print}: cxx.export.poptions += -DLIBPRINT_SHARED
+
+# Install into the libprint/ subdirectory of, say, /usr/include/.
+#
+install.include = $install.include/libprint/
diff --git a/libprint/export.hxx b/libprint/export.hxx
new file mode 100644
index 0000000..dedfa65
--- /dev/null
+++ b/libprint/export.hxx
@@ -0,0 +1,36 @@
+// file: libprint/export.hxx -*- C++ -*-
+
+#pragma once
+
+// 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.
+
+#if defined(LIBPRINT_STATIC)         // Using static.
+#  define LIBPRINT_EXPORT
+#elif defined(LIBPRINT_STATIC_BUILD) // Building static.
+#  define LIBPRINT_EXPORT
+#elif defined(LIBPRINT_SHARED)       // Using shared.
+#  ifdef _WIN32
+#    define LIBPRINT_EXPORT __declspec(dllimport)
+#  else
+#    define LIBPRINT_EXPORT
+#  endif
+#elif defined(LIBPRINT_SHARED_BUILD) // Building shared.
+#  ifdef _WIN32
+#    define LIBPRINT_EXPORT __declspec(dllexport)
+#  else
+#    define LIBPRINT_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 LIBPRINT_EXPORT            // Using static or shared.
+#endif
diff --git a/libprint/print.cxx b/libprint/print.cxx
new file mode 100644
index 0000000..32c827d
--- /dev/null
+++ b/libprint/print.cxx
@@ -0,0 +1,13 @@
+// file: libprint/libprint.cxx -*- C++ -*-
+
+#include <libprint/print.hxx>
+
+#include <iostream>
+
+using namespace std;
+
+void
+print (const string& h)
+{
+  cout << h << endl;
+}
diff --git a/libprint/print.hxx b/libprint/print.hxx
new file mode 100644
index 0000000..63cb541
--- /dev/null
+++ b/libprint/print.hxx
@@ -0,0 +1,10 @@
+// file: libprint/print.hxx -*- C++ -*-
+
+#pragma once
+
+#include <string>
+
+#include <libprint/export.hxx>
+
+LIBPRINT_EXPORT void
+print (const std::string& hello);