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| author | Mathieu Malaterre <mathieu.malaterre@gmail.com> | 2012-09-10 12:38:22 +0000 |
|---|---|---|
| committer | Mathieu Malaterre <mathieu.malaterre@gmail.com> | 2012-09-10 12:38:22 +0000 |
| commit | 0452ebdfcd6170c595ef791992bbeee2a6473352 (patch) | |
| tree | b0a269cce139c0eaf703f55b10df798c826044db | |
| parent | c8b8c4cf3059b903cd613e4a8242ba09ce5a7869 (diff) | |
[trunk] Use new gcc feature to actually hide exported symbols
Right now we are only using the Windows/POSIX compatibility layer. This means that we have only been marking explicitely which symbols to export.
What this also means is that for one to explicitely remove non-explicitely marked symbols, one has to set -fvisibility=hidden as CFLAGS
| -rw-r--r-- | libopenjpeg/openjpeg.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libopenjpeg/openjpeg.h b/libopenjpeg/openjpeg.h index 6e56f51a..de1576ff 100644 --- a/libopenjpeg/openjpeg.h +++ b/libopenjpeg/openjpeg.h @@ -53,7 +53,14 @@ #endif #if defined(OPJ_STATIC) || !defined(_WIN32) +/* http://gcc.gnu.org/wiki/Visibility */ +#if __GNUC__ >= 4 +#define OPJ_API __attribute__ ((visibility ("default"))) +#define OPJ_LOCAL __attribute__ ((visibility ("hidden"))) +#else #define OPJ_API +#define OPJ_LOCAL +#endif #define OPJ_CALLCONV #else #define OPJ_CALLCONV __stdcall |