Merge pull request #387 from tguillem/cmake-libkrb5-option

cmake: add ENABLE_LIBKRB5 and ENABLE_GSSAPI options

CMakeLists.txt

@@ -57,14 +57,19 @@ endif()
       option(BUILD_SHARED_LIBS "Build shared libraries" ON)
     endif()
       option(ENABLE_EXAMPLES "Build example programs" OFF)
-
+      option(ENABLE_LIBKRB5 "Enable libkrb5 support" ON)
+      option(ENABLE_GSSAPI "Enable gssapi support" ON)
       list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/Modules)
   endif()
 
   if(CMAKE_SYSTEM_NAME MATCHES Linux)
-    find_package(LibKrb5)
+    if (ENABLE_LIBKRB5)
+      find_package(LibKrb5)
+    endif()
   elseif(IOS)
-    find_package(GSSAPI)  
+    if (ENABLE_GSSAPI)
+      find_package(GSSAPI)  
+    endif()
   endif()
 
   if(NOT ESP_PLATFORM)
@@ -95,9 +100,13 @@ endif()
     endif()
 
     if(CMAKE_SYSTEM_NAME MATCHES Linux)
-      set(core_DEPENDS ${LIBKRB5_LIBRARY} CACHE STRING "" FORCE)  
+      if (ENABLE_LIBKRB5)
+        set(core_DEPENDS ${LIBKRB5_LIBRARY} CACHE STRING "" FORCE)  
+      endif()
     elseif(IOS)
-      set(core_DEPENDS ${GSSAPI_LIBRARIES} CACHE STRING "" FORCE)   
+      if (ENABLE_GSSAPI)
+        set(core_DEPENDS ${GSSAPI_LIBRARIES} CACHE STRING "" FORCE)   
+      endif()
     endif()
 
     if(MSVC AND BUILD_SHARED_LIBS)

cmake/ConfigureChecks.cmake

@@ -6,8 +6,12 @@ endif()
 check_include_file("arpa/inet.h" HAVE_ARPA_INET_H)
 check_include_file("dlfcn.h" HAVE_DLFCN_H)
 check_include_file("fcntl.h" HAVE_FCNTL_H)
+if (ENABLE_GSSAPI)
 check_include_file("gssapi/gssapi.h" HAVE_GSSAPI_GSSAPI_H)
+endif()
+if (ENABLE_LIBKRB5)
 check_include_file("krb5/krb5.h" HAVE_LIBKRB5)
+endif()
 check_include_file("inttypes.h" HAVE_INTTYPES_H)
 check_include_file("netdb.h" HAVE_NETDB_H)
 check_include_file("netinet/in.h" HAVE_NETINET_IN_H)