tests: mockup: add extern "C" to the header

The gpio-mockup support library should be usable from C++ code too.
Add extern "C" to the header.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

diff --git a/tests/mockup/gpio-mockup.h b/tests/mockup/gpio-mockup.h
index d91f3f8eaa059a482504fc9b2134933c1ab420c5..b04dafa60e72262ab0563a3ab0017f282f84f3b4 100644 (file)
--- a/tests/mockup/gpio-mockup.h
+++ b/tests/mockup/gpio-mockup.h
@@ -8,6 +8,10 @@
 #ifndef __GPIO_MOCKUP_H__
 #define __GPIO_MOCKUP_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct gpio_mockup;
 
 #define GPIO_MOCKUP_FLAG_NAMED_LINES   (1 << 0)
@@ -29,4 +33,8 @@ int gpio_mockup_get_value(struct gpio_mockup *ctx,
 int gpio_mockup_set_pull(struct gpio_mockup *ctx, unsigned int chip_idx,
                         unsigned int line_offset, int pull);
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* __GPIO_MOCKUP_H__ */