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make system utf8cpp check more robust

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Check if utf8to32() and utf32to8() methods are available.
This commit is contained in:
Dominik 'Rathann' Mierzejewski 2015-04-02 23:05:01 +02:00
parent fcd92036b4
commit b4ca4862b4
1 changed files with 14 additions and 1 deletions
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15
ac/utf8cpp.m4
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@ -6,9 +6,22 @@ AC_LANG_PUSH(C++)
AC_CHECK_HEADERS([utf8.h])
if test x"$ac_cv_header_utf8_h" = xyes; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <utf8.h>
#include <vector>
]],[
std::string s("ÁÂÃÄÅÆ");
std::vector<int> utf32result;
std::vector<unsigned char> utf8result;
utf8::utf8to32(s.begin(),s.end(),std::back_inserter(utf32result));
utf8::utf32to8(utf32result.begin(),utf32result.end(),std::back_inserter(utf8result));
])],[ac_cv_utf8cpp=yes],[ac_cv_utf8cpp=no])
fi
AC_LANG_POP
if test x"$ac_cv_header_utf8_h" = xyes; then
if test x"$ac_cv_utf8cpp" = xyes; then
AC_MSG_NOTICE([Using the system version of UTF8-CPP])
UTF8CPP_INTERNAL=no
else