utils: Convert to pragma once

Remove the verbose #ifndef/#define/#endif pattern for maintaining
header idempotency, and replace it with a simple #pragma once.

This simplifies the headers, and prevents redundant changes when
header files get moved.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>

6 files changed, 7 insertions, 27 deletions

diff --git a/utils/gen-header.sh b/utils/gen-header.sh
index fcb9c5e1..8b66c5dd 100755
--- a/utils/gen-header.sh
+++ b/utils/gen-header.sh
@@ -11,8 +11,8 @@ cat <<EOF > "$dst_file"
  *
  * libcamera.h - libcamera public API
  */
-#ifndef __LIBCAMERA_LIBCAMERA_H__
-#define __LIBCAMERA_LIBCAMERA_H__
+
+#pragma once
 
 EOF
 
@@ -25,8 +25,3 @@ done | sort)
 for header in $headers ; do
 	echo "#include <libcamera/$header>" >> "$dst_file"
 done
-
-cat <<EOF >> "$dst_file"
-
-#endif /* __LIBCAMERA_LIBCAMERA_H__ */
-EOF
diff --git a/utils/ipc/generators/libcamera_templates/core_ipa_interface.h.tmpl b/utils/ipc/generators/libcamera_templates/core_ipa_interface.h.tmpl
index 6bf6094b..a565b59a 100644
--- a/utils/ipc/generators/libcamera_templates/core_ipa_interface.h.tmpl
+++ b/utils/ipc/generators/libcamera_templates/core_ipa_interface.h.tmpl
@@ -12,8 +12,7 @@
  * This file is auto-generated. Do not edit.
  */
 
-#ifndef __LIBCAMERA_IPA_INTERFACE_CORE_GENERATED_H__
-#define __LIBCAMERA_IPA_INTERFACE_CORE_GENERATED_H__
+#pragma once
 
 {% if has_map %}#include <map>{% endif %}
 {% if has_array %}#include <vector>{% endif %}
@@ -36,5 +35,3 @@ static const {{const.kind|name}} {{const.mojom_name}} = {{const.value}};
 {% endfor %}
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_IPA_INTERFACE_CORE_GENERATED_H__ */
diff --git a/utils/ipc/generators/libcamera_templates/core_ipa_serializer.h.tmpl b/utils/ipc/generators/libcamera_templates/core_ipa_serializer.h.tmpl
index 37a784f1..5738a1aa 100644
--- a/utils/ipc/generators/libcamera_templates/core_ipa_serializer.h.tmpl
+++ b/utils/ipc/generators/libcamera_templates/core_ipa_serializer.h.tmpl
@@ -13,8 +13,7 @@
  * This file is auto-generated. Do not edit.
  */
 
-#ifndef __LIBCAMERA_INTERNAL_IPA_DATA_SERIALIZER_CORE_H__
-#define __LIBCAMERA_INTERNAL_IPA_DATA_SERIALIZER_CORE_H__
+#pragma once
 
 #include <tuple>
 #include <vector>
@@ -43,5 +42,3 @@ public:
 {% endfor %}
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_INTERNAL_IPA_DATA_SERIALIZER_CORE_H__ */
diff --git a/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl b/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl
index ebe811fa..415ec283 100644
--- a/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl
+++ b/utils/ipc/generators/libcamera_templates/module_ipa_interface.h.tmpl
@@ -12,8 +12,7 @@
  * This file is auto-generated. Do not edit.
  */
 
-#ifndef __LIBCAMERA_IPA_INTERFACE_{{module_name|upper}}_GENERATED_H__
-#define __LIBCAMERA_IPA_INTERFACE_{{module_name|upper}}_GENERATED_H__
+#pragma once
 
 #include <libcamera/ipa/core_ipa_interface.h>
 #include <libcamera/ipa/ipa_interface.h>
@@ -83,5 +82,3 @@ public:
 {% endfor %}
 {%- endif %}
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_IPA_INTERFACE_{{module_name|upper}}_GENERATED_H__ */
diff --git a/utils/ipc/generators/libcamera_templates/module_ipa_proxy.h.tmpl b/utils/ipc/generators/libcamera_templates/module_ipa_proxy.h.tmpl
index 1979e68f..ce396c18 100644
--- a/utils/ipc/generators/libcamera_templates/module_ipa_proxy.h.tmpl
+++ b/utils/ipc/generators/libcamera_templates/module_ipa_proxy.h.tmpl
@@ -13,8 +13,7 @@
  * This file is auto-generated. Do not edit.
  */
 
-#ifndef __LIBCAMERA_INTERNAL_IPA_PROXY_{{module_name|upper}}_H__
-#define __LIBCAMERA_INTERNAL_IPA_PROXY_{{module_name|upper}}_H__
+#pragma once
 
 #include <libcamera/ipa/ipa_interface.h>
 #include <libcamera/ipa/{{module_name}}_ipa_interface.h>
@@ -130,5 +129,3 @@ private:
 {% endfor %}
 {%- endif %}
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_INTERNAL_IPA_PROXY_{{module_name|upper}}_H__ */
diff --git a/utils/ipc/generators/libcamera_templates/module_ipa_serializer.h.tmpl b/utils/ipc/generators/libcamera_templates/module_ipa_serializer.h.tmpl
index 779d2114..8b709705 100644
--- a/utils/ipc/generators/libcamera_templates/module_ipa_serializer.h.tmpl
+++ b/utils/ipc/generators/libcamera_templates/module_ipa_serializer.h.tmpl
@@ -13,8 +13,7 @@
  * This file is auto-generated. Do not edit.
  */
 
-#ifndef __LIBCAMERA_INTERNAL_IPA_DATA_SERIALIZER_{{module_name|upper}}_H__
-#define __LIBCAMERA_INTERNAL_IPA_DATA_SERIALIZER_{{module_name|upper}}_H__
+#pragma once
 
 #include <tuple>
 #include <vector>
@@ -44,5 +43,3 @@ public:
 {% endfor %}
 
 } /* namespace libcamera */
-
-#endif /* __LIBCAMERA_INTERNAL_IPA_DATA_SERIALIZER_{{module_name|upper}}_H__ */