diff --git a/alib2algo/src/regexp/convert/Convert.cpp b/alib2algo/src/regexp/convert/Convert.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..935a3b7b5cfa343447192e100a8681a6fe996b1e
--- /dev/null
+++ b/alib2algo/src/regexp/convert/Convert.cpp
@@ -0,0 +1,7 @@
+#include "ToAutomaton.cxx"
+#include "ToAutomatonDerivation.cxx"
+#include "ToAutomatonGlushkov.cxx"
+#include "ToAutomatonThompson.cxx"
+#include "ToGrammar.cxx"
+#include "ToGrammarRightRGDerivation.cxx"
+#include "ToGrammarRightRGGlushkov.cxx"
diff --git a/alib2algo/src/regexp/convert/ToAutomaton.cpp b/alib2algo/src/regexp/convert/ToAutomaton.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToAutomaton.cpp
rename to alib2algo/src/regexp/convert/ToAutomaton.cxx
diff --git a/alib2algo/src/regexp/convert/ToAutomatonDerivation.cpp b/alib2algo/src/regexp/convert/ToAutomatonDerivation.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToAutomatonDerivation.cpp
rename to alib2algo/src/regexp/convert/ToAutomatonDerivation.cxx
diff --git a/alib2algo/src/regexp/convert/ToAutomatonGlushkov.cpp b/alib2algo/src/regexp/convert/ToAutomatonGlushkov.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToAutomatonGlushkov.cpp
rename to alib2algo/src/regexp/convert/ToAutomatonGlushkov.cxx
diff --git a/alib2algo/src/regexp/convert/ToAutomatonThompson.cpp b/alib2algo/src/regexp/convert/ToAutomatonThompson.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToAutomatonThompson.cpp
rename to alib2algo/src/regexp/convert/ToAutomatonThompson.cxx
diff --git a/alib2algo/src/regexp/convert/ToGrammar.cpp b/alib2algo/src/regexp/convert/ToGrammar.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToGrammar.cpp
rename to alib2algo/src/regexp/convert/ToGrammar.cxx
diff --git a/alib2algo/src/regexp/convert/ToGrammarRightRGDerivation.cpp b/alib2algo/src/regexp/convert/ToGrammarRightRGDerivation.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToGrammarRightRGDerivation.cpp
rename to alib2algo/src/regexp/convert/ToGrammarRightRGDerivation.cxx
diff --git a/alib2algo/src/regexp/convert/ToGrammarRightRGGlushkov.cpp b/alib2algo/src/regexp/convert/ToGrammarRightRGGlushkov.cxx
similarity index 100%
rename from alib2algo/src/regexp/convert/ToGrammarRightRGGlushkov.cpp
rename to alib2algo/src/regexp/convert/ToGrammarRightRGGlushkov.cxx