Add carla-host-plugin library, for usage in hosts

Makefile

@@ -495,16 +495,19 @@ endif
 
 	# Adjust PREFIX, LIBDIR and INCLUDEDIR in pkg-config files
 	sed $(SED_ARGS) 's?X-PREFIX-X?$(PREFIX)?' \
+		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-host-plugin.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-native-plugin.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-standalone.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-utils.pc
 
 	sed $(SED_ARGS) 's?X-LIBDIR-X?$(LIBDIR)?' \
+		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-host-plugin.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-native-plugin.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-standalone.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-utils.pc
 
 	sed $(SED_ARGS) 's?X-INCLUDEDIR-X?$(INCLUDEDIR)?' \
+		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-host-plugin.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-native-plugin.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-standalone.pc \
 		$(DESTDIR)$(LIBDIR)/pkgconfig/carla-utils.pc
@@ -775,6 +778,7 @@ install: install_main install_external_plugins
 
 uninstall:
 	rm -f $(DESTDIR)$(BINDIR)/carla*
+	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/carla-host-plugin.pc
 	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/carla-native-plugin.pc
 	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/carla-standalone.pc
 	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/carla-utils.pc

data/carla-host-plugin.pc

@@ -0,0 +1,9 @@
+prefix=X-PREFIX-X
+libdir=X-LIBDIR-X/carla
+includedir=X-INCLUDEDIR-X/carla
+
+Name: carla-host-plugin
+Version: 2.1.95
+Description: Carla Host as Native Plugin
+Libs: -Wl,-rpath,${libdir} -L${libdir} -lcarla_host-plugin
+Cflags: -DREAL_BUILD -I${includedir} -I${includedir}/includes

source/backend/CarlaStandalone.cpp

@@ -45,9 +45,11 @@
 // --------------------------------------------------------------------------------------------------------------------
 // API
 
-#define CARLA_COMMON_NEED_CHECKSTRINGPTR
-#include "CarlaHostCommon.cpp"
-#undef CARLA_COMMON_NEED_CHECKSTRINGPTR
+#ifndef CARLA_PLUGIN_EXPORT
+# define CARLA_COMMON_NEED_CHECKSTRINGPTR
+# include "CarlaHostCommon.cpp"
+# undef CARLA_COMMON_NEED_CHECKSTRINGPTR
+#endif
 
 #ifdef USING_JUCE
 static void carla_juce_init();
@@ -2267,15 +2269,16 @@ const char* carla_get_host_osc_url_udp(CarlaHostHandle handle)
 
 // --------------------------------------------------------------------------------------------------------------------
 
-#define CARLA_PLUGIN_UI_CLASS_PREFIX Standalone
-#include "CarlaPluginUI.cpp"
-#undef CARLA_PLUGIN_UI_CLASS_PREFIX
-
-#include "CarlaDssiUtils.cpp"
-#include "CarlaMacUtils.cpp"
-#include "CarlaPatchbayUtils.cpp"
-#include "CarlaPipeUtils.cpp"
-#include "CarlaProcessUtils.cpp"
-#include "CarlaStateUtils.cpp"
+#ifndef CARLA_PLUGIN_EXPORT
+# define CARLA_PLUGIN_UI_CLASS_PREFIX Standalone
+# include "CarlaPluginUI.cpp"
+# undef CARLA_PLUGIN_UI_CLASS_PREFIX
+# include "CarlaDssiUtils.cpp"
+# include "CarlaMacUtils.cpp"
+# include "CarlaPatchbayUtils.cpp"
+# include "CarlaPipeUtils.cpp"
+# include "CarlaProcessUtils.cpp"
+# include "CarlaStateUtils.cpp"
+#endif
 
 // --------------------------------------------------------------------------------------------------------------------

source/plugin/Makefile

@@ -176,6 +176,7 @@ WINE_LINK_FLAGS += -Wl,-rpath,/usr/lib/carla
 # ---------------------------------------------------------------------------------------------------------------------
 
 TARGETS = \
+	$(BINDIR)/libcarla_host-plugin$(LIB_EXT) \
 	$(BINDIR)/libcarla_native-plugin$(LIB_EXT)
 
 # sometimes needed for testing:
@@ -254,6 +255,13 @@ debug:
 
 # ---------------------------------------------------------------------------------------------------------------------
 
+$(BINDIR)/libcarla_host-plugin$(LIB_EXT): $(OBJDIR)/carla-host-plugin.cpp.o $(OBJDIR)/carla-native-plugin.cpp.o $(LIBS)
+	-@mkdir -p $(BINDIR)
+	@echo "Linking libcarla-host-plugin$(LIB_EXT)"
+	@$(CXX) $< $(LIBS_START) $(LIBS) $(LIBS_END) $(SHARED) $(NATIVE_LINK_FLAGS) -o $@
+
+# ---------------------------------------------------------------------------------------------------------------------
+
 $(BINDIR)/carla-native-plugin$(APP_EXT): $(OBJDIR)/carla-native-plugin.cpp.o $(LIBS)
 	-@mkdir -p $(BINDIR)
 	@echo "Linking carla-native-plugin$(APP_EXT)"
@@ -370,7 +378,7 @@ endif
 
 # ---------------------------------------------------------------------------------------------------------------------
 
-$(OBJDIR)/carla-native-plugin.cpp.o: carla-native-plugin.cpp
+$(OBJDIR)/carla-%-plugin.cpp.o: carla-%-plugin.cpp
 	-@mkdir -p $(OBJDIR)
 	@echo "Compiling $<"
 	@$(CXX) $< $(BUILD_CXX_FLAGS) -c -o $@
@@ -498,6 +506,7 @@ $(OBJDIR)/carla-lv2-export.cpp.o: carla-lv2-export.cpp
 
 # ---------------------------------------------------------------------------------------------------------------------
 
+-include $(OBJDIR)/carla-host-plugin.cpp.d
 -include $(OBJDIR)/carla-native-plugin.cpp.d
 -include $(OBJDIR)/carla-lv2.cpp.d
 -include $(OBJDIR)/carla-lv2-export.cpp.d

source/plugin/carla-host-plugin.cpp

@@ -0,0 +1,37 @@
+/*
+ * Carla Plugin Host
+ * Copyright (C) 2011-2020 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the doc/GPL.txt file.
+ */
+
+#include "water/files/File.h"
+
+// -------------------------------------------------------------------------------------------------------------------
+// Always return a valid string ptr
+
+static const char* const gNullCharPtr = "";
+
+static void checkStringPtr(const char*& charPtr) noexcept
+{
+    if (charPtr == nullptr)
+        charPtr = gNullCharPtr;
+}
+
+// -------------------------------------------------------------------------------------------------------------------
+// Include all standalone code
+
+#define CARLA_PLUGIN_EXPORT
+#include "CarlaStandalone.cpp"
+
+// -------------------------------------------------------------------------------------------------------------------