1. odbc requirement check in CMakeLists.txt(s) (#12087)

* 1. odbc requirement check in CMakeLists.txt(s)
2. remove unnecessary LINK_DIRECTORIES directives in several tests CMakeLists.txt(s)

* revert LINK_DIRECTORIES directive for googletest

src/connector/odbc/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 3.0...3.20)
 PROJECT(TDengine)
 
-IF (TD_LINUX_64)
-  find_program(HAVE_ODBCINST NAMES odbcinst)
-  IF (HAVE_ODBCINST)
-    include(CheckSymbolExists)
-    # shall we revert CMAKE_REQUIRED_LIBRARIES and how?
-    set(CMAKE_REQUIRED_LIBRARIES odbc)
-    check_symbol_exists(SQLExecute "sql.h" HAVE_ODBC_DEV)
-    if(NOT (HAVE_ODBC_DEV))
-      unset(HAVE_ODBC_DEV CACHE)
-      message(WARNING "unixodbc-dev is not installed yet, you may install it under Ubuntu by typing: sudo apt install unixodbc-dev")
-    else ()
-      message(STATUS "unixodbc/unixodbc-dev are installed, and odbc connector will be built")
-      find_package(FLEX)
-      if(NOT FLEX_FOUND)
-        message(WARNING "you need to install flex first")
-      else ()
-        if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0.0)
-          message(WARNING "gcc 4.8.0 will complain too much about flex-generated code, we just bypass building ODBC driver in such case")
-        else ()
-          SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ")
-          SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ")
-          ADD_SUBDIRECTORY(src)
-          ADD_SUBDIRECTORY(tools)
-          ADD_SUBDIRECTORY(examples)
-        endif ()
-      endif()
-    endif()
-  ELSE ()
-      message(WARNING "unixodbc is not installed yet, you may install it under Ubuntu by typing: sudo apt install unixodbc")
+macro(check_odbc_requirement)
+  find_package(FLEX)
+  IF (NOT FLEX_FOUND)
+    message(WARNING "you need to install flex first")
+    return ()
+  ENDIF ()
+  IF (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0.0)
+    message(WARNING "gcc 4.8.0 will complain too much about flex-generated code, we just bypass building ODBC driver in such case")
+    return ()
   ENDIF ()
-ENDIF ()
 
-IF (TD_DARWIN)
-  find_program(HAVE_ODBCINST NAMES odbcinst)
-  IF (HAVE_ODBCINST)
-    include(CheckSymbolExists)
-    # shall we revert CMAKE_REQUIRED_LIBRARIES and how?
-    set(CMAKE_REQUIRED_LIBRARIES odbc)
-    set(CMAKE_REQUIRED_INCLUDES /usr/local/include /opt/homebrew/include)
-    set(CMAKE_REQUIRED_LINK_OPTIONS -L/usr/local/lib -L/opt/homebrew/lib)
-    check_symbol_exists(SQLExecute "sql.h" HAVE_ODBC_DEV)
-    if(NOT (HAVE_ODBC_DEV))
-      unset(HAVE_ODBC_DEV CACHE)
+  find_program(TD_ODBCINST_INSTALLED NAMES odbcinst)
+  IF (NOT TD_ODBCINST_INSTALLED)
+    IF (TD_DARWIN)
       message(WARNING "unixodbc is not installed yet, you may install it under macOS by typing: brew install unixodbc")
-    else ()
-      message(STATUS "unixodbc is installed, and odbc connector will be built")
-      find_package(FLEX)
-      if(NOT FLEX_FOUND)
-        message(WARNING "you need to install flex first")
-      else ()
-        if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0.0)
-          message(WARNING "gcc 4.8.0 will complain too much about flex-generated code, we just bypass building ODBC driver in such case")
-        else ()
-          SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wconversion")
-          SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Wconversion")
-          ADD_SUBDIRECTORY(src)
-          ADD_SUBDIRECTORY(tools)
-          ADD_SUBDIRECTORY(examples)
-        endif ()
-      endif()
-    endif()
-  ELSE ()
-    message(WARNING "unixodbc is not installed yet, you may install it under macOS by typing: brew install unixodbc")
+    ELSE ()
+      message(WARNING "odbcinst is not installed yet, you may install it under Ubuntu by typing: sudo apt install odbcinst")
+    ENDIF ()
+    return ()
+  ENDIF ()
+
+  find_program(TD_ISQL_INSTALLED NAMES isql)
+  IF (NOT TD_ISQL_INSTALLED)
+    IF (TD_DARWIN)
+      message(WARNING "unixodbc is not installed yet, you may install it under macOS by typing: brew install unixodbc")
+    ELSE ()
+      message(WARNING "unixodbc is not installed yet, you may install it under Ubuntu by typing: sudo apt install unixodbc")
+    ENDIF ()
+    return ()
+  ENDIF ()
+
+  find_program(TD_PKG_CONFIG_INSTALLED NAMES pkg-config)
+  IF (NOT TD_PKG_CONFIG_INSTALLED)
+    IF (TD_DARWIN)
+      message(WARNING "pkg-config is not installed yet, you may install it under macOS by typing: brew install pkg-config")
+    ELSE ()
+      message(WARNING "pkg-config is not installed yet, you may install it under Ubuntu by typing: sudo apt install pkg-config")
+    ENDIF ()
+    return ()
   ENDIF ()
-ENDIF ()
+
+  EXECUTE_PROCESS(COMMAND pkg-config --variable=includedir odbc ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE ODBC_INCLUDE_DIRECTORY)
+  EXECUTE_PROCESS(COMMAND pkg-config --variable=libdir odbc ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE ODBC_LIBRARY_DIRECTORY)
+  EXECUTE_PROCESS(COMMAND pkg-config --libs-only-L odbc ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE ODBC_LINK_OPTIONS)
+
+  EXECUTE_PROCESS(COMMAND pkg-config --variable=includedir odbcinst ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE ODBCINST_INCLUDE_DIRECTORY)
+  EXECUTE_PROCESS(COMMAND pkg-config --variable=libdir odbcinst ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE ODBCINST_LIBRARY_DIRECTORY)
+  EXECUTE_PROCESS(COMMAND pkg-config --libs-only-L odbcinst ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE ODBCINST_LINK_OPTIONS)
+
+  include(CheckSymbolExists)
+
+  set(CMAKE_REQUIRED_LIBRARIES odbc odbcinst)
+  set(CMAKE_REQUIRED_INCLUDES ${ODBC_INCLUDE_DIRECTORY} ${ODBCINST_INCLUDE_DIRECTORY})
+  set(CMAKE_REQUIRED_LINK_OPTIONS ${ODBC_LINK_OPTIONS} ${ODBCINST_LINK_OPTIONS})
+
+  check_symbol_exists(SQLExecute "sql.h" HAVE_ODBC_DEV)
+  IF (NOT HAVE_ODBC_DEV)
+    message(WARNING "odbc requirement not satisfied, check detail in ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log")
+    return ()
+  ENDIF ()
+
+  check_symbol_exists(SQLInstallODBC "odbcinst.h" HAVE_ODBCINST_DEV)
+  IF (NOT HAVE_ODBCINST_DEV)
+    message(WARNING "odbc requirement not satisfied, check detail in ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log")
+    return ()
+  ENDIF ()
+
+endmacro()
 
 IF (TD_WINDOWS_64)
   find_package(ODBC)
@@ -86,5 +89,14 @@ IF (TD_WINDOWS_64)
     ADD_SUBDIRECTORY(tools)
     ADD_SUBDIRECTORY(examples)
   endif()
+ELSE ()
+  check_odbc_requirement()
+  IF (TD_DARWIN)
+    SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wconversion")
+    SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Wconversion")
+  ENDIF ()
+  ADD_SUBDIRECTORY(src)
+  ADD_SUBDIRECTORY(tools)
+  ADD_SUBDIRECTORY(examples)
 ENDIF ()
 

src/connector/odbc/examples/c/CMakeLists.txt

@@ -3,15 +3,11 @@ PROJECT(TDengine)
 ADD_EXECUTABLE(tcodbc main.c ../../src/todbc_log.c)
 
 IF (TD_LINUX OR TD_DARWIN)
+  target_include_directories(tcodbc PRIVATE ${ODBC_INCLUDE_DIRECTORY})
+  target_link_directories(tcodbc PUBLIC ${ODBC_LIBRARY_DIRECTORY})
   TARGET_LINK_LIBRARIES(tcodbc taos odbc)
 ENDIF ()
 
-IF (TD_DARWIN)
-  # TODO: later we shall specify directories according to the specific target intel/arm64
-  target_include_directories(tcodbc PRIVATE /usr/local/include /opt/homebrew/include)
-  target_link_directories(tcodbc PUBLIC /usr/local/lib /opt/homebrew/lib)
-ENDIF ()
-
 IF (TD_WINDOWS_64)
   SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /GL")
   SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /GL")

src/connector/odbc/src/CMakeLists.txt

@@ -18,7 +18,8 @@ IF (TD_LINUX_64)
   SET_TARGET_PROPERTIES(todbc PROPERTIES CLEAN_DIRECT_OUTPUT 1)
   SET_TARGET_PROPERTIES(todbc PROPERTIES VERSION ${TD_VER_NUMBER} SOVERSION 1)
   TARGET_LINK_LIBRARIES(todbc todbc_base taos odbcinst)
-  target_include_directories(todbc PUBLIC .)
+  target_include_directories(todbc PRIVATE . ${ODBC_INCLUDE_DIRECTORY})
+  target_link_directories(todbc PUBLIC ${ODBC_LIBRARY_DIRECTORY})
 
   install(CODE "execute_process(COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/install.sh ${CMAKE_BINARY_DIR})")
 ENDIF ()
@@ -39,10 +40,8 @@ IF (TD_DARWIN)
   SET_TARGET_PROPERTIES(todbc PROPERTIES CLEAN_DIRECT_OUTPUT 1)
   SET_TARGET_PROPERTIES(todbc PROPERTIES VERSION ${TD_VER_NUMBER} SOVERSION 1)
   TARGET_LINK_LIBRARIES(todbc todbc_base taos odbcinst)
-  target_include_directories(todbc PUBLIC .)
-  # TODO: later we shall specify directories according to the specific target intel/arm64
-  target_include_directories(todbc PRIVATE /usr/local/include /opt/homebrew/include)
-  target_link_directories(todbc PUBLIC /usr/local/lib /opt/homebrew/lib)
+  target_include_directories(todbc PRIVATE . ${ODBCINST_INCLUDE_DIRECTORY})
+  target_link_directories(todbc PUBLIC ${ODBCINST_LIBRARY_DIRECTORY})
 
   install(CODE "execute_process(COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/install.sh ${CMAKE_BINARY_DIR})")
 ENDIF ()

src/connector/odbc/src/base/CMakeLists.txt

@@ -4,8 +4,7 @@ PROJECT(TDengine)
 aux_source_directory(. SRC)
 add_library(todbc_base STATIC ${SRC})
 
-if (TD_DARWIN)
-  # TODO: later we shall specify directories according to the specific target intel/arm64
-  target_include_directories(todbc_base PRIVATE /usr/local/include /opt/homebrew/include)
+if (TD_LINUX OR TD_DARWIN)
+  target_include_directories(todbc_base PRIVATE ${ODBC_INCLUDE_DIRECTORY})
 endif ()
 

src/connector/odbc/tools/CMakeLists.txt

@@ -4,15 +4,12 @@ ADD_EXECUTABLE(todbcinst main.c)
 ADD_EXECUTABLE(tconv     tconv.c)
 
 IF (TD_LINUX OR TD_DARWIN)
+  target_include_directories(todbcinst PRIVATE . ${ODBC_INCLUDE_DIRECTORY} ${ODBCINST_INCLUDE_DIRECTORY})
+  target_link_directories(todbcinst PUBLIC ${ODBC_LIBRARY_DIRECTORY} ${ODBCINST_LIBRARY_DIRECTORY})
   TARGET_LINK_LIBRARIES(todbcinst odbc odbcinst)
 ENDIF ()
 
 IF (TD_DARWIN)
-  # TODO: later we shall specify directories according to the specific target intel/arm64
-  target_include_directories(todbcinst PRIVATE /usr/local/include /opt/homebrew/include)
-  target_link_directories(todbcinst PUBLIC /usr/local/lib /opt/homebrew/lib)
-  target_include_directories(tconv PRIVATE /usr/local/include /opt/homebrew/include)
-  target_link_directories(tconv PUBLIC /usr/local/lib /opt/homebrew/lib)
   TARGET_LINK_LIBRARIES(tconv iconv)
 ENDIF ()