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Viewing changes to m4/cxx_standard.m4

  • Committer: Monty Taylor
  • Date: 2009-03-10 00:05:04 UTC
  • mfrom: (919.2.22 mordred)
  • mto: This revision was merged to the branch mainline in revision 928.
  • Revision ID: mordred@inaugust.com-20090310000504-sx3b9kgdkjcame63
Merged from Solaris.

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m4/cxx_standard.m4
 
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AC_DEFUN([AC_CXX_CHECK_STANDARD],[
 
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  AC_CACHE_CHECK([what C++ standard the compiler supports],
 
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    [ac_cv_cxx_standard],[
 
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    AC_LANG_PUSH(C++)
 
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    save_CXXFLAGS="${CXXFLAGS}"
 
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    CXXFLAGS="-std=gnu++0x ${CXXFLAGS}"
 
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    AC_COMPILE_IFELSE(
 
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      [AC_LANG_PROGRAM(
 
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        [[
 
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#include <string>
 
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using namespace std;
 
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        ]],[[
 
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string foo("test string");
 
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        ]])],
 
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        [ac_cv_cxx_standard="gnu++0x"],
 
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        [ac_cv_cxx_standard="gnu++98"])
 
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    CXXFLAGS="${save_CXXFLAGS}"
 
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    AC_LANG_POP()
 
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  ])
 
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  CXXFLAGS="-std=${ac_cv_cxx_standard} ${CXXFLAGS}"
 
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])