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| -rw-r--r-- | configure.ac | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index b787dc55181c..2882aecaea69 100644 --- a/configure.ac +++ b/configure.ac @@ -5519,6 +5519,31 @@ else fi fi +dnl At least MSVC 2015 SP1 is known to sporadically emit warning C4592 +dnl ("implementation limitation" when defining OUStringLiteral variables in +dnl vcl/source/app/IconThemeInfo.cxx), while SP3 is known good, and it is +dnl probably a good idea to require that anyway. A reliable way to check for +dnl MSVC 2015 SP3 appears to be to check for support of C++17 nested namespace +dnl definitions (which requires /std:c++latest to be enabled): +if test "$COM" = MSC -a "$VCVER" = 140; then + AC_MSG_CHECKING([whether MSVC 2015 compiler $MSVC_CXX is at least SP3]) + save_CXX=$CXX + save_CXXFLAGS=$CXXFLAGS + CXX=$MSVC_CXX + CXXFLAGS="$CXXFLAGS /std:c++latest" + AC_LANG_PUSH([C++]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + namespace A::B {} + ]])], [good=yes], [good=no]) + AC_LANG_POP([C++]) + CXX=$save_CXX + CXXFLAGS=$save_CXXFLAGS + AC_MSG_RESULT([$good]) + if test "$good" = no; then + AC_MSG_ERROR([When using MSVC 2015, at least SP3 must be installed]) + fi +fi + dnl check for GNU C++ compiler version if test "$GXX" = "yes"; then AC_MSG_CHECKING([the GNU C++ compiler version]) |