Fix build with LDFLAGS=--Wl,--as-needed on Linux

cmake/readline.cmake

@@ -79,7 +79,7 @@ MACRO (MYSQL_CHECK_MULTIBYTE)
 ENDMACRO()
 
 MACRO (FIND_CURSES)
- INCLUDE (FindCurses)
+ FIND_PACKAGE(Curses) 
  MARK_AS_ADVANCED(CURSES_CURSES_H_PATH CURSES_FORM_LIBRARY CURSES_HAVE_CURSES_H)
  IF(NOT CURSES_FOUND)
    SET(ERRORMSG "Curses library not found. Please install appropriate package,
@@ -104,6 +104,18 @@ MACRO (FIND_CURSES)
    SET(CURSES_LIBRARY "curses" CACHE INTERNAL "" FORCE)
    SET(CURSES_CURSES_LIBRARY "curses" CACHE INTERNAL "" FORCE)
  ENDIF()
+
+ IF(CMAKE_SYSTEM_NAME MATCHES "Linux")
+   # -Wl,--as-needed breaks linking with -lcurses, e.g on Fedora 
+   # Lower-level libcurses calls are exposed by libtinfo
+   CHECK_LIBRARY_EXISTS(${CURSES_LIBRARY} tputs "" HAVE_TPUTS_IN_CURSES)
+   IF(NOT HAVE_TPUTS_IN_CURSES)
+     CHECK_LIBRARY_EXISTS(tinfo tputs "" HAVE_TPUTS_IN_TINFO)
+     IF(HAVE_TPUTS_IN_TINFO)
+       SET(CURSES_LIBRARY tinfo)
+     ENDIF()
+   ENDIF() 
+ ENDIF()
 ENDMACRO()
 
 MACRO (MYSQL_USE_BUNDLED_READLINE)

cmd-line-utils/libedit/CMakeLists.txt

@@ -18,7 +18,7 @@ INCLUDE(CheckIncludeFile)
 include(CheckFunctionExists)
 CHECK_INCLUDE_FILES(term.h HAVE_TERM_H)
 
-SET(CMAKE_REQUIRED_LIBRARIES ${CURSES_CURSES_LIBRARY})
+SET(CMAKE_REQUIRED_LIBRARIES ${CURSES_LIBRARY})
 CHECK_CXX_SOURCE_COMPILES("
 #include <term.h>
 int main()