cmGeneratorExpression: Re-write for multi-stage evaluation

The expressions may be parsed and then cached and evaluated multiple
times.  They are evaluated lazily so that literals such as ',' can be
treated as universal parameter separators, and can be processed from
results without appearing literally, and without interfering with the
parsing/evaluation of the entire expression.

1 files changed, 3 insertions, 0 deletions

diff --git a/bootstrap b/bootstrap
index ec5745d..23134d0 100755
--- a/bootstrap
+++ b/bootstrap
@@ -202,6 +202,9 @@ CMAKE_CXX_SOURCES="\
   cmInstallDirectoryGenerator \
   cmGeneratedFileStream \
   cmGeneratorTarget \
+  cmGeneratorExpressionEvaluator \
+  cmGeneratorExpressionLexer \
+  cmGeneratorExpressionParser \
   cmGeneratorExpression \
   cmGlobalGenerator \
   cmLocalGenerator \