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make -fvisibility=hidden work with java 1.7

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This commit is contained in:
Jan Starzynski 2019-05-29 16:27:21 +02:00
parent c9b3e718db
commit e9ed7eb68d
1 changed files with 11 additions and 0 deletions
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11
modules/java/generator/src/cpp/common.h
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@ -16,6 +16,17 @@ extern "C" {
#endif
#include <jni.h>
// make -fvisibility=hidden work with java 1.7
#if defined(__linux__) && !defined(__ANDROID__) && !defined (JNI_VERSION_1_8)
// adapted from jdk1.8/jni.h
#if (defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4) && (__GNUC_MINOR__ > 2))) || __has_attribute(visibility)
#undef JNIEXPORT
#define JNIEXPORT __attribute__((visibility("default")))
#undef JNIIMPORT
#define JNIIMPORT __attribute__((visibility("default")))
#endif
#endif
} // extern "C"
#include "opencv_java.hpp"