From 662d7a9ef59a4f17ee84eb356129edc78f89f8db Mon Sep 17 00:00:00 2001
From: Jim Evins <evins@snaught.com>
Date: Wed, 24 May 2017 19:33:39 -0400
Subject: [PATCH] Added FindGnuBarcode cmake module.

---
 CMakeLists.txt                      |  7 +++++++
 cmake/Modules/FindGnuBarcode.cmake  | 27 +++++++++++++++++++++++++++
 cmake/Modules/FindLibQrencode.cmake |  1 -
 glabels/CMakeLists.txt              |  7 +++++++
 4 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 cmake/Modules/FindGnuBarcode.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1cefe15..4e4399c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -52,6 +52,7 @@ find_package(ZLIB 1.2 REQUIRED)
 #
 # Optional dependencies
 #
+find_package (GnuBarcode QUIET)
 find_package (LibQrencode QUIET)
 
 
@@ -77,6 +78,12 @@ message (STATUS "C++ Compiler ............ " ${CMAKE_CXX_COMPILER_ID} " " ${CMAK
 message (STATUS "Qt version .............. " ${Qt5Core_VERSION})
 message (STATUS "zlib version ............ " ${ZLIB_VERSION_STRING})
 
+if (GNUBARCODE_FOUND)
+  message (STATUS "GNU Barcode (optional)... " ${GNUBARCODE_VERSION_STRING})
+else (GNUBARCODE_FOUND)
+  message (STATUS "GNU Barcode (optional)... No.")
+endif (GNUBARCODE_FOUND)
+
 if (LIBQRENCODE_FOUND)
   message (STATUS "qrencode (optional)...... " ${LIBQRENCODE_VERSION_STRING})
 else (LIBQRENCODE_FOUND)
diff --git a/cmake/Modules/FindGnuBarcode.cmake b/cmake/Modules/FindGnuBarcode.cmake
new file mode 100644
index 0000000..45997b9
--- /dev/null
+++ b/cmake/Modules/FindGnuBarcode.cmake
@@ -0,0 +1,27 @@
+# - Try to find the GNU Barcode library
+# Once done this will define
+#
+#  GNUBARCODE_FOUND - System has GNU Barcode
+#  GNUBARCODE_INCLUDE_DIR - The GNU Barcode include directory
+#  GNUBARCODE_LIBRARIES - The libraries needed to use GNU Barcode
+#  GNUBARCODE_VERSION_STRING - the version of GNU Barcode found
+
+set (GNUBARCODE_DEFINITIONS "")
+
+find_path (GNUBARCODE_INCLUDE_DIR NAMES barcode.h PATH_SUFFIXES barcode)
+
+find_library (GNUBARCODE_LIBRARIES NAMES barcode )
+
+if (GNUBARCODE_INCLUDE_DIR AND EXISTS "${GNUBARCODE_INCLUDE_DIR}/barcode.h")
+  file (STRINGS "${GNUBARCODE_INCLUDE_DIR}/barcode.h" BARCODE_H REGEX "^#define BARCODE_VERSION *\"[^\"]*\"")
+  string (REGEX REPLACE "^.*VERSION *\"([^\"]*)\"" "\\1" GNUBARCODE_VERSION_STRING ${BARCODE_H})
+endif()
+
+# handle the QUIETLY and REQUIRED arguments and set GNUBARCODE_FOUND to TRUE if
+# all listed variables are TRUE
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(GnuBarcode
+                                  REQUIRED_VARS GNUBARCODE_LIBRARIES GNUBARCODE_INCLUDE_DIR
+                                  VERSION_VAR GNUBARCODE_VERSION_STRING)
+
+mark_as_advanced(GNUBARCODE_INCLUDE_DIR GNUBARCODE_LIBRARIES)
diff --git a/cmake/Modules/FindLibQrencode.cmake b/cmake/Modules/FindLibQrencode.cmake
index ec2724a..e5390ee 100644
--- a/cmake/Modules/FindLibQrencode.cmake
+++ b/cmake/Modules/FindLibQrencode.cmake
@@ -5,7 +5,6 @@
 #  LIBQRENCODE_INCLUDE_DIR - The LibQrencode include directory
 #  LIBQRENCODE_LIBRARIES - The libraries needed to use LibQrencode
 #  LIBQRENCODE_DEFINITIONS - Compiler switches required for using LibQrencode
-#  LIBQRENCODE_XMLLINT_EXECUTABLE - The XML checking tool xmllint coming with LibQrencode
 #  LIBQRENCODE_VERSION_STRING - the version of LibQrencode found
 
 # use pkg-config to get the directories and then use these values with find_path() and find_library()
diff --git a/glabels/CMakeLists.txt b/glabels/CMakeLists.txt
index 9ebd762..bc237bf 100644
--- a/glabels/CMakeLists.txt
+++ b/glabels/CMakeLists.txt
@@ -11,6 +11,13 @@ endif ()
 # Uncomment to build with pedantic flags
 #add_compile_options (-Werror -Wall -Wpedantic)
 
+if (${GNUBARCODE_FOUND})
+  add_definitions (-DHAVE_GNU_BARCODE=1)
+else (${GNUBARCODE_FOUND})
+  set (GNUBARCODE_INCLUDE_DIR "")
+  set (GNUBARCODE_LIBRARIES "")
+endif (${GNUBARCODE_FOUND})
+
 if (${LIBQRENCODE_FOUND})
   add_definitions (-DHAVE_QRENCODE=1)
 else (${LIBQRENCODE_FOUND})