Factor out deprecation attribute and warning boilerplate

2 files changed, 60 insertions, 0 deletions

diff --git a/lv2/core/attributes.h b/lv2/core/attributes.h
new file mode 100644
index 0000000..c054ae1
--- /dev/null
+++ b/lv2/core/attributes.h
@@ -0,0 +1,58 @@
+/*
+  Copyright 2018 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef LV2_CORE_ATTRIBUTES_H
+#define LV2_CORE_ATTRIBUTES_H
+
+/**
+   @defgroup attributes Attributes
+
+   Macros for source code attributes.
+
+   @{
+*/
+
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
+#define LV2_DEPRECATED __attribute__((__deprecated__))
+#else
+#define LV2_DEPRECATED
+#endif
+
+#if defined(__clang__)
+#define LV2_DISABLE_DEPRECATION_WARNINGS \
+	_Pragma("clang diagnostic push") \
+	_Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
+#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
+#define LV2_DISABLE_DEPRECATION_WARNINGS \
+	_Pragma("GCC diagnostic push") \
+	_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#else
+#define LV2_DISABLE_DEPRECATION_WARNINGS
+#endif
+
+#if defined(__clang__)
+#define LV2_RESTORE_WARNINGS _Pragma("clang diagnostic pop")
+#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
+#define LV2_RESTORE_WARNINGS _Pragma("GCC diagnostic pop")
+#else
+#define LV2_RESTORE_WARNINGS
+#endif
+
+/**
+   @}
+*/
+
+#endif /* LV2_CORE_ATTRIBUTES_H */
diff --git a/lv2/core/meta.ttl b/lv2/core/meta.ttl
index 8ed9595..d6290f9 100644
--- a/lv2/core/meta.ttl
+++ b/lv2/core/meta.ttl
@@ -43,6 +43,8 @@ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH R
 		dcs:blame <http://drobilla.net/drobilla#me> ;
 		dcs:changeset [
 			dcs:item [
+				rdfs:label "Add core/attributes.h utility header."
+			] , [
 				rdfs:label "Include waf sources and fix build with Python 3.7."
 			] , [
 				rdfs:label "eg-sampler: Add waveform display to UI."