AC_PROG_AWK
AC_CHECK_PROGS(PERL, perl5 perl)
+# Check whether MSVC toolset is explicitly set
+AM_CONDITIONAL(MSVC_BASE_NO_TOOLSET_SET, [test x$MSVC_BASE_TOOLSET = x])
+AM_CONDITIONAL(MSVC_NO_TOOLSET_SET, [test x$MSVC_TOOLSET = x])
+
REBUILD=\#
if test "x$enable_rebuilds" = "xyes" && \
test -n "$PERL" && \
win32/vs11/Makefile
win32/vs12/Makefile
win32/vs14/Makefile
+win32/vs15/Makefile
docs/Makefile
docs/version.xml
atk.spec