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comparison spandsp-0.0.6pre17/config/ax_check_export_capability.m4 @ 4:26cd8f1ef0b1
import spandsp-0.0.6pre17
| author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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| date | Fri, 25 Jun 2010 15:50:58 +0200 |
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| 3:c6c5a16ce2f2 | 4:26cd8f1ef0b1 |
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| 1 # @synopsis AX_CHECK_EXPORT_CAPABILITY | |
| 2 # | |
| 3 # Does the compiler support the exporting of library symbols? | |
| 4 # @version 1.0 Jan 31 2009 | |
| 5 # @author Steve Underwood | |
| 6 # | |
| 7 # Permission to use, copy, modify, distribute, and sell this file for any | |
| 8 # purpose is hereby granted without fee, provided that the above copyright | |
| 9 # and this permission notice appear in all copies. No representations are | |
| 10 # made about the suitability of this software for any purpose. It is | |
| 11 # provided "as is" without express or implied warranty. | |
| 12 | |
| 13 AC_DEFUN([AX_CHECK_EXPORT_CAPABILITY], | |
| 14 [AC_CACHE_CHECK([if $1 supports library symbol export], | |
| 15 ac_cv_symbol_export_capability, | |
| 16 | |
| 17 [# Initialize to unknown | |
| 18 ac_cv_symbol_export_capability="no" | |
| 19 | |
| 20 case "${ax_cv_c_compiler_vendor}" in | |
| 21 gnu) | |
| 22 save_CFLAGS="${CFLAGS}" | |
| 23 CFLAGS="${CFLAGS} -fvisibility=hidden" | |
| 24 AC_COMPILE_IFELSE( | |
| 25 [AC_LANG_PROGRAM( | |
| 26 [int foo __attribute__ ((visibility("default")));], | |
| 27 [;] | |
| 28 )], | |
| 29 | |
| 30 [AC_MSG_RESULT([yes]) | |
| 31 COMP_VENDOR_CFLAGS="-fvisibility=hidden -DSWITCH_API_VISIBILITY=1 -DHAVE_VISIBILITY=1 $COMP_VENDOR_CFLAGS" | |
| 32 COMP_VENDOR_CXXFLAGS="-fvisibility=hidden -DSWITCH_API_VISIBILITY=1 -DHAVE_VISIBILITY=1 $COMP_VENDOR_CXXFLAGS" | |
| 33 ac_cv_symbol_export_capability="yes"], | |
| 34 | |
| 35 [AC_MSG_RESULT([no])] | |
| 36 ) | |
| 37 CFLAGS="${save_CFLAGS}" | |
| 38 ;; | |
| 39 | |
| 40 sun) | |
| 41 save_CFLAGS="${CFLAGS}" | |
| 42 CFLAGS="${CFLAGS} -xldscope=hidden" | |
| 43 AC_COMPILE_IFELSE( | |
| 44 [AC_LANG_PROGRAM( | |
| 45 [int foo __attribute__ ((visibility("default")));], | |
| 46 [;] | |
| 47 )], | |
| 48 | |
| 49 [AC_MSG_RESULT([yes]) | |
| 50 COMP_VENDOR_CFLAGS="-xldscope=hidden -DSWITCH_API_VISIBILITY=1 -DHAVE_VISIBILITY=1 $COMP_VENDOR_CFLAGS" | |
| 51 COMP_VENDOR_CXXFLAGS="-xldscope=hidden -DSWITCH_API_VISIBILITY=1 -DHAVE_VISIBILITY=1 $COMP_VENDOR_CXXFLAGS" | |
| 52 ac_cv_symbol_export_capability="yes"], | |
| 53 | |
| 54 [AC_MSG_RESULT([no])] | |
| 55 ) | |
| 56 CFLAGS="${save_CFLAGS}" | |
| 57 ;; | |
| 58 | |
| 59 esac]) | |
| 60 AS_IF([test AS_VAR_GET(ac_cv_symbol_export_capability) = yes], [$2], [$3])[]dnl | |
| 61 ]) # AX_CHECK_EXPORT_CAPABILITY |