[PATCH] handle c dependicies for files with utf-8 BOM

[Evgeniy A. Dushistov]

---
 Source/cmDependsC.cxx | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Source/cmDependsC.cxx b/Source/cmDependsC.cxx
index a252a1a..1d05797 100644
--- a/Source/cmDependsC.cxx
+++ b/Source/cmDependsC.cxx
@@ -249,6 +249,14 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
           std::ifstream fin(fullName.c_str());
           if(fin)
             {
+	      static const unsigned char UTF8_BOM[3] = {0xEF, 0xBB, 0xBF};
+	      unsigned char bom[3];
+	      fin.read(reinterpret_cast<char *>(bom), sizeof(bom));
+	      if ((fin && !(bom[0] == UTF8_BOM[0] && bom[1] == UTF8_BOM[1] && bom[2] == UTF8_BOM[2])) || !fin) 
+		{
+		  fin.clear();
+		  fin.seekg(0, std::ios::beg);
+		}
             // Add this file as a dependency.
             dependencies.insert(fullName);
 
-- 
1.8.1.5


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