[LyX/master] Cmake build: Add defines for HAVE_XCB_XCB_H and HAVE_LIBXCB

[Kornel Benko]

commit f1fddd86efa22ac9342de723f5ca724f252f8cbe
Author: Kornel Benko <kor...@lyx.org>
Date:   Thu Aug 29 14:08:39 2024 +0200

    Cmake build: Add defines for HAVE_XCB_XCB_H and HAVE_LIBXCB
---
 development/cmake/ConfigureChecks.cmake | 2 +-
 development/cmake/config.h.cmake        | 5 ++++-
 src/CMakeLists.txt                      | 1 -
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/development/cmake/ConfigureChecks.cmake 
b/development/cmake/ConfigureChecks.cmake
index 9062372c38..ed9328fdcd 100644
--- a/development/cmake/ConfigureChecks.cmake
+++ b/development/cmake/ConfigureChecks.cmake
@@ -28,7 +28,7 @@ test_big_endian(WORDS_BIGENDIAN)
 set(Include_Defines)
 foreach(_h_file aspell.h aspell/aspell.h limits.h locale.h
        stdlib.h sys/stat.h sys/time.h sys/types.h sys/utime.h
-       sys/socket.h unistd.h inttypes.h utime.h string.h argz.h)
+       sys/socket.h unistd.h inttypes.h utime.h string.h argz.h xcb/xcb.h)
        string(REGEX REPLACE "[/\\.]" "_" _hf ${_h_file})
        string(TOUPPER ${_hf} _HF)
        check_include_files(${_h_file} HAVE_${_HF})
diff --git a/development/cmake/config.h.cmake b/development/cmake/config.h.cmake
index 15bceaac46..856f9a8acc 100644
--- a/development/cmake/config.h.cmake
+++ b/development/cmake/config.h.cmake
@@ -91,10 +91,13 @@ ${Include_used_spellchecker}
 // Define to 1 if enchant is version 2.x at least
 #cmakedefine HAVE_ENCHANT2 1
 
-#endif // config.h guard
+// Define to 1 if have xcb library
+#cmakedefine HAVE_LIBXCB ${HAVE_LIBXCB}
 
 #define MYTHES_H_LOCATION <${MYTHES_DIR}/mythes.hxx>
 
+#endif // config.h guard
+
 // Unguarded cleanup of global namespace:
 
 #ifdef ColorMode
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4debde6c16..b89ecee2f6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -148,7 +148,6 @@ if(QT_USES_X11)
   find_package(X11 REQUIRED)
   target_link_libraries(${_lyx} ${X11_X11_LIB}) # we need it because we use 
XSendEvent
   if(HAVE_QT5_X11_EXTRAS)
-    find_library(XCB_LIBRARY NAMES xcb)
     if (XCB_LIBRARY MATCHES "NOTFOUND")
       message(FATAL_ERROR "Need xcb library to use with QT5_X11_EXTRAS")
     endif()
-- 
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