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1.8.6.6 C99 Issues with the 7.1.1b Feature Supplement

For compilers earlier than the one released with OpenUNIX 8.0.0 (UnixWare 7.1.2), including the 7.1.1b Feature Supplement, you may need to specify -Xb in CFLAGS or the CC environment variable. The indication of this is an error in compiling ‘tuplesort.c’ referencing inline functions. Apparently there was a change in the 7.1.2(8.0.0) compiler and beyond.