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+<sect2>
+<title>Command explanations</title>
+
+<para>
+<userinput>CXXFLAGS=-Dstrerror=strerror</userinput>: If no macro
+strerror is defined, src/include/lib.h declares an function prototype
+for strerror which is incompatible with Glibc's /usr/include/string.h.
+By defining strerror=strerror a macro is defined which prevents the
+declaration and does not alter the meaning of strerror.
+</para>
+
+</sect2>
+