When using MSVC 2015, require at least SP3
Change-Id: Ia5495f2eedfdbc9e42e06d95657bc01e3904b7e7
Reviewed-on: https://gerrit.libreoffice.org/34594
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>
diff --git a/configure.ac b/configure.ac
index b787dc5..2882aec 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])
