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jack2/common/jack/weakmacros.h

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  1. /*

  2.     Copyright (C) 2010 Paul Davis

  3. 

  4.     This program is free software; you can redistribute it and/or modify

  5.     it under the terms of the GNU Lesser General Public License as published by

  6.     the Free Software Foundation; either version 2.1 of the License, or

  7.     (at your option) any later version.

  8. 

  9.     This program is distributed in the hope that it will be useful,

  10.     but WITHOUT ANY WARRANTY; without even the implied warranty of

  11.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  12.     GNU Lesser General Public License for more details.

  13. 

  14.     You should have received a copy of the GNU Lesser General Public License

  15.     along with this program; if not, write to the Free Software

  16.     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

  17. 

  18. */

  19. 

  20. #ifndef __weakmacros_h__

  21. #define __weakmacros_h__

  22. 

  23. /*************************************************************

  24.  * NOTE: JACK_WEAK_EXPORT ***MUST*** be used on every function

  25.  * added to the JACK API after the 0.116.2 release.

  26.  *

  27.  * Functions that predate this release are marked with

  28.  * JACK_WEAK_OPTIONAL_EXPORT which can be defined at compile

  29.  * time in a variety of ways. The default definition is empty,

  30.  * so that these symbols get normal linkage. If you wish to

  31.  * use all JACK symbols with weak linkage, include

  32.  * <jack/weakjack.h> before jack.h.

  33.  *************************************************************/

  34. 

  35. #ifndef JACK_WEAK_EXPORT

  36. #ifdef __GNUC__

  37. /* JACK_WEAK_EXPORT needs to be a macro which

  38.    expands into a compiler directive. If non-null, the directive

  39.    must tell the compiler to arrange for weak linkage of

  40.    the symbol it used with. For this to work full may

  41.    require linker arguments in the client as well.

  42. */

  43. #define JACK_WEAK_EXPORT __attribute__((weak))

  44. #else

  45. /* Add other things here for non-gcc platforms */

  46. 

  47. #ifdef WIN32

  48. #define JACK_WEAK_EXPORT

  49. #endif

  50. 

  51. #endif

  52. #endif

  53. 

  54. #ifndef JACK_OPTIONAL_WEAK_EXPORT

  55. #define JACK_OPTIONAL_WEAK_EXPORT

  56. #endif

  57. 

  58. #ifndef JACK_OPTIONAL_WEAK_DEPRECATED_EXPORT

  59. #ifdef __GNUC__

  60. #define JACK_OPTIONAL_WEAK_DEPRECATED_EXPORT __attribute__((__deprecated__))

  61. #else

  62. /* Add other things here for non-gcc platforms */

  63. 

  64. #ifdef WIN32

  65. #define JACK_OPTIONAL_WEAK_DEPRECATED_EXPORT

  66. #endif

  67. 

  68. #endif /* __GNUC__ */

  69. #endif

  70. 

  71. #endif /* __weakmacros_h__ */