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-rw-r--r--Source/cmMakefile.cxx2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index e605d37..f09c605 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -1024,7 +1024,7 @@ bool cmMakefile::ParseDefineFlag(std::string const& def, bool remove)
{
// Create a regular expression to match valid definitions.
static cmsys::RegularExpression
- valid("^[-/]D[A-Za-z_][A-Za-z0-9_]*(=.*)$");
+ valid("^[-/]D[A-Za-z_][A-Za-z0-9_]*(=.*)?$");
// Make sure the definition matches.
if(!valid.find(def.c_str()))