- Keep Prefer-Debian-default-version-of-Python.patch (Debian specific) - Drop Fix-check_symbol_exists-with-pedantic-errors.patch (applied by upstream) Gbp-Dch: fullci/unstable
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@ -1,64 +0,0 @@
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From: =?utf-8?q?Timo_R=C3=B6hling?= <roehling@debian.org>
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Date: Fri, 22 Oct 2021 15:32:20 +0200
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Subject: Fix check_symbol_exists() with -pedantic-errors
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Forwarded: https://gitlab.kitware.com/cmake/cmake/-/merge_requests/6656
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---
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Modules/CheckSymbolExists.cmake | 15 +++++++++++++++
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Tests/CMakeOnly/CheckSymbolExists/CMakeLists.txt | 11 +++++++++++
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2 files changed, 26 insertions(+)
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diff --git a/Modules/CheckSymbolExists.cmake b/Modules/CheckSymbolExists.cmake
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index 48ee3c4..a7139af 100644
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--- a/Modules/CheckSymbolExists.cmake
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+++ b/Modules/CheckSymbolExists.cmake
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@@ -67,14 +67,29 @@ cmake_policy(SET CMP0054 NEW) # if() quoted variables not dereferenced
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macro(CHECK_SYMBOL_EXISTS SYMBOL FILES VARIABLE)
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if(CMAKE_C_COMPILER_LOADED)
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+ __CHECK_SYMBOL_EXISTS_FILTER_FLAGS(C)
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__CHECK_SYMBOL_EXISTS_IMPL("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c" "${SYMBOL}" "${FILES}" "${VARIABLE}" )
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+ __CHECK_SYMBOL_EXISTS_RESTORE_FLAGS(C)
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elseif(CMAKE_CXX_COMPILER_LOADED)
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+ __CHECK_SYMBOL_EXISTS_FILTER_FLAGS(CXX)
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__CHECK_SYMBOL_EXISTS_IMPL("${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.cxx" "${SYMBOL}" "${FILES}" "${VARIABLE}" )
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+ __CHECK_SYMBOL_EXISTS_RESTORE_FLAGS(CXX)
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else()
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message(FATAL_ERROR "CHECK_SYMBOL_EXISTS needs either C or CXX language enabled")
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endif()
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endmacro()
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+macro(__CHECK_SYMBOL_EXISTS_FILTER_FLAGS LANG)
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+ set(__CMAKE_${LANG}_FLAGS_SAVED "${CMAKE_${LANG}_FLAGS}")
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+ string(REGEX REPLACE "(^| )-Werror([= ][^ ]*)?( |$)" " " CMAKE_${LANG}_FLAGS "${CMAKE_${LANG}_FLAGS}")
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+ string(REGEX REPLACE "(^| )-pedantic-errors( |$)" " " CMAKE_${LANG}_FLAGS "${CMAKE_${LANG}_FLAGS}")
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+endmacro()
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+
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+macro(__CHECK_SYMBOL_EXISTS_RESTORE_FLAGS LANG)
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+ set(CMAKE_${LANG}_FLAGS "${__CMAKE_${LANG}_FLAGS_SAVED}")
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+ unset(__CMAKE_${LANG}_FLAGS_SAVED)
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+endmacro()
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+
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macro(__CHECK_SYMBOL_EXISTS_IMPL SOURCEFILE SYMBOL FILES VARIABLE)
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if(NOT DEFINED "${VARIABLE}" OR "x${${VARIABLE}}" STREQUAL "x${VARIABLE}")
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set(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
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diff --git a/Tests/CMakeOnly/CheckSymbolExists/CMakeLists.txt b/Tests/CMakeOnly/CheckSymbolExists/CMakeLists.txt
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index 9a9bb2a..0ced696 100644
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--- a/Tests/CMakeOnly/CheckSymbolExists/CMakeLists.txt
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+++ b/Tests/CMakeOnly/CheckSymbolExists/CMakeLists.txt
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@@ -48,4 +48,15 @@ if (CMAKE_COMPILER_IS_GNUCC)
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if (CSE_RESULT_O3)
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message(SEND_ERROR "CheckSymbolExists reported a nonexistent symbol as existing with optimization -O3")
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endif ()
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+
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+ string(APPEND CMAKE_C_FLAGS " -pedantic-errors")
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+ unset(CS_RESULT_PEDANTIC_ERRORS CACHE)
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+ message(STATUS "Testing with -pedantic-errors")
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+
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+ check_symbol_exists(fopen "stdio.h" CSE_RESULT_PEDANTIC_ERRORS)
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+
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+ if(NOT CSE_RESULT_PEDANTIC_ERRORS)
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+ message(SEND_ERROR "ChecKSymbolExists reported an existing symbol as nonexisting with -pedantic-errors")
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+ endif()
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+
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endif ()
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