Fix Cygwin compatibility

Author: matzeri

api/Makefile.am

@@ -67,7 +67,7 @@ libtesseract_la_LIBADD += ../cube/libtesseract_cube.la \
         ../neural_networks/runtime/libtesseract_neural.la
 endif
 
-libtesseract_la_LDFLAGS += -version-info $(GENERIC_LIBRARY_VERSION)
+libtesseract_la_LDFLAGS += -version-info $(GENERIC_LIBRARY_VERSION) -no-undefined
 
 bin_PROGRAMS = tesseract
 tesseract_SOURCES = tesseractmain.cpp

ccutil/ambigs.cpp

@@ -24,13 +24,13 @@
 #include "helpers.h"
 #include "universalambigs.h"
 
-#if defined _WIN32 || defined(__CYGWIN__)
+#if defined _WIN32
 #ifndef __GNUC__
 #define strtok_r strtok_s
 #else
 #include "strtok_r.h"
 #endif  /* __GNUC__ */
-#endif  /* _WIN32 __CYGWIN__*/
+#endif  /* _WIN32 */
 
 namespace tesseract {
 

configure.ac

@@ -94,7 +94,6 @@ case "${host_os}" in
         ;;
     cygwin*)
         AM_CONDITIONAL([ADD_RT], false)
-        AM_CONDITIONAL([T_WIN], true)
         AC_SUBST([AM_LDFLAGS], ['-Wl,-no-undefined -Wl,--as-needed'])
         ;;
     solaris*)