Add Leptonica_BUILD_DIR option for CMake find_package in Config mode. Set correct .so name on Linux.

Author: egorpugin

.travis.yml

@@ -41,5 +41,5 @@ install:
 script:
   - mkdir build
   - cd build
-  - cmake .. -DLeptonica_DIR=leptonica-master/build
+  - cmake .. -DLeptonica_BUILD_DIR=leptonica-master/build
   - make

CMakeLists.txt

@@ -44,7 +44,13 @@ set(VERSION_MAJOR 3)
 set(VERSION_MINOR 05)
 set(VERSION_PLAIN ${VERSION_MAJOR}.${VERSION_MINOR})
 
-find_package(Leptonica 1.71 REQUIRED)
+set(MINIMUM_LEPTONICA_VERSION 1.71)
+
+if (NOT Leptonica_BUILD_DIR)
+find_package(Leptonica ${MINIMUM_LEPTONICA_VERSION} REQUIRED)
+else()
+find_package(Leptonica ${MINIMUM_LEPTONICA_VERSION} REQUIRED CONFIG)
+endif()
 
 find_package(ICU COMPONENTS uc i18n)
 find_package(OpenCL QUIET)
@@ -142,6 +148,8 @@ include_directories(wordrec)
 # LIBRARY tesseract
 ########################################
 
+string(SUBSTRING ${VERSION_MINOR} 0 1 VERSION_MINOR_0)
+string(SUBSTRING ${VERSION_MINOR} 1 1 VERSION_MINOR_1)
 
 file(GLOB tesseract_src
     "ccmain/*.cpp"
@@ -191,8 +199,12 @@ if (NOT STATIC)
 target_compile_definitions      (tesseract PUBLIC -DTESS_EXPORTS)
 endif()
 target_link_libraries           (tesseract ${Leptonica_LIBRARIES} ${LIB_Ws2_32} ${LIB_pthread})
+set_target_properties           (tesseract PROPERTIES VERSION ${VERSION_MAJOR}.${VERSION_MINOR_0}.${VERSION_MINOR_1})
+set_target_properties           (tesseract PROPERTIES SOVERSION ${VERSION_MAJOR}.${VERSION_MINOR_0}.${VERSION_MINOR_1})
+if (WIN32)
 set_target_properties           (tesseract PROPERTIES OUTPUT_NAME tesseract${VERSION_MAJOR}${VERSION_MINOR})
 set_target_properties           (tesseract PROPERTIES DEBUG_OUTPUT_NAME tesseract${VERSION_MAJOR}${VERSION_MINOR}d)
+endif()
 export(TARGETS tesseract FILE ${CMAKE_BINARY_DIR}/TesseractTargets.cmake)
 
 

appveyor.yml

@@ -20,5 +20,5 @@ before_build:
 build_script:
   - mkdir build
   - cd build
-  - cmake .. -G "%generator%" -DLeptonica_DIR=leptonica-master/build -DSTATIC=1
+  - cmake .. -G "%generator%" -DLeptonica_BUILD_DIR=leptonica-master/build -DSTATIC=1
   - msbuild tesseract.sln /p:Platform=%vcplatform% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"

cmake/FindLeptonica.cmake

@@ -17,8 +17,9 @@ find_path(Leptonica_INCLUDE_DIR leptonica/allheaders.h
     /usr/local/include
     /opt/include
     /opt/local/include
+    ${Leptonica_DIR}/include
 )
-if(NOT Leptonica_INCLUDE_DIR-NOTFOUND)
+if("${Leptonica_INCLUDE_DIR}" EQUAL "Leptonica_INCLUDE_DIR-NOTFOUND")
     set(Leptonica_INCLUDE_DIRS ${Leptonica_INCLUDE_DIR}/leptonica)
     file(STRINGS ${Leptonica_INCLUDE_DIRS}/allheaders.h Leptonica_MAJOR_VERSION REGEX "LIBLEPT_MAJOR_VERSION")
     file(STRINGS ${Leptonica_INCLUDE_DIRS}/allheaders.h Leptonica_MINOR_VERSION REGEX "LIBLEPT_MINOR_VERSION")
@@ -33,6 +34,7 @@ find_library(Leptonica_LIBRARY NAMES lept liblept
     /usr/local/lib
     /opt/lib
     /opt/local/lib
+    ${Leptonica_DIR}/lib
 )
 set(Leptonica_LIBRARIES ${Leptonica_LIBRARY})
 
@@ -43,6 +45,7 @@ find_package_handle_standard_args(Leptonica
         Leptonica_INCLUDE_DIRS
         Leptonica_LIBRARIES
     VERSION_VAR Leptonica_VERSION
+    FAIL_MESSAGE "Try to set Leptonica_DIR or Leptonica_ROOT"
 )
 
 mark_as_advanced(Leptonica_INCLUDE_DIRS Leptonica_LIBRARIES)