Fixes #76 - enable OpenMP support

Author: zdenop

api/Makefile.am

@@ -81,6 +81,9 @@ tesseract_LDADD = libtesseract.la
 if USE_OPENCL
 tesseract_LDADD += $(OPENCL_LIB)
 endif
+if OPENMP
+tesseract_LDADD += $(OPENMP_CFLAGS)
+endif
 
 if T_WIN
 tesseract_LDADD += -lws2_32

ccmain/par_control.cpp

@@ -18,6 +18,9 @@
 ///////////////////////////////////////////////////////////////////////
 
 #include "tesseractclass.h"
+#ifdef OPENMP
+#include <omp.h>
+#endif  // OPENMP
 
 namespace tesseract {
 

configure.ac

@@ -166,6 +166,15 @@ if test "$enable_embedded" = "yes"; then
   AC_SUBST([AM_CPPFLAGS], [-DEMBEDDED])
 fi
 
+# check whether to build OpenMP support
+AC_OPENMP
+AS_IF([test "x$OPENMP_CFLAGS" != "x"],
+  AM_CONDITIONAL([OPENMP], test "x$OPENMP_CFLAGS" != "x")
+  AC_SUBST(AM_CPPFLAGS,"$OPENMP_CXXFLAGS")
+  AC_DEFINE([OPENMP], [], [Defined when compiled with OpenMP support])
+)
+
+
 # check whether to build opencl version
 AC_MSG_CHECKING(--enable-opencl argument)
 AC_ARG_ENABLE([opencl],