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Viewing changes to m4/cxx_standard.m4

  • Committer: Monty Taylor
  • Date: 2009-06-30 18:09:07 UTC
  • mto: This revision was merged to the branch mainline in revision 1083.
  • Revision ID: mordred@inaugust.com-20090630180907-r24363hlhgxg4cbw
Whole boat-load of build fixes.

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Lines of Context:
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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  AC_REQUIRE([AC_CXX_COMPILE_STDCXX_0X])
 
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  AS_IF([test "$GCC" = "yes"],
 
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        [AS_IF([test "$ac_cv_cxx_compile_cxx0x_native" = "yes"],[],
 
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               [AS_IF([test "$ac_cv_cxx_compile_cxx0x_gxx" = "yes"],
 
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                      [CXXFLAGS="-std=gnu++0x ${CXXFLAGS}"],
 
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                      [CXXFLAGS="-std=gnu++98"])
 
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               ])
 
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        ])
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])