Writing Makefile for PLDelphi
gcc -c  -Wall -Wno-comments  -DUSE_REENTRANT_API -D_POSIX_PTHREAD_SEMANTICS -D_REENTRANT -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64  -I/export/home/cpanrun/build/5.6.1/lib/5.6.1/sun4-solaris-thread-multi/CORE  PLDelphi.c
PLDelphi.c:21: windows.h: No such file or directory
make: *** [PLDelphi.o] Error 1