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CMake: Add option to disable position independent code

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chaoticgd
2026-03-07 12:26:24 +00:00
committed by Ty
parent ec6901b93d
commit 71fe1b809c
1 changed files with 27 additions and 6 deletions
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cmake/BuildParameters.cmake
+27 -6
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@@ -13,6 +13,7 @@ option(LTO_PCSX2_CORE "Enable LTO/IPO/LTCG on the subset of pcsx2 that benefits
option(USE_VTUNE "Plug VTUNE to profile GS JIT.")
option(PACKAGE_MODE "Use this option to ease packaging of PCSX2 (developer/distribution option)")
option(BUNDLE_EMOJI_FONT "Bundles Noto Color Emoji for systems whose system emoji font isn't usable by freetype" ON)
option(POSITION_INDEPENDENT_CODE "Generate position-independent code. It is recommended that you leave this on." ON)
#-------------------------------------------------------------------------------
# Graphical option
@@ -270,13 +271,33 @@ endif()
set(PCSX2_WARNINGS ${DEFAULT_WARNINGS})
# Make sure we're building with position independent code enabled. Without this
# check, on some platforms (e.g. Fedora 43) the right flags won't be passed to
# the linker, resulting in a broken build when LTO is enabled.
include(CheckPIESupported)
check_pie_supported()
if(POSITION_INDEPENDENT_CODE)
# Make sure position-independent code is enabled properly.
# Without this check, on some platforms (e.g. Fedora 43) the right flags
# won't be passed to the linker, resulting in a broken build when link time
# optimization is enabled (even with a cmake version >= 3.14).
if(NOT MSVC)
include(CheckPIESupported)
check_pie_supported(OUTPUT_VARIABLE PIE_SUPPORTED_OUTPUT LANGUAGES C CXX)
set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
if((NOT CMAKE_C_LINK_PIE_SUPPORTED) OR (NOT CMAKE_CXX_LINK_PIE_SUPPORTED))
message(WARNING
"The POSITION_INDEPENDENT_CODE option is enabled but is not "
"supported at link time:\n${PIE_SUPPORTED_OUTPUT}")
endif()
endif()
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
else()
if(CMAKE_INTERPROCEDURAL_OPTIMIZATION)
message(WARNING
"The CMAKE_INTERPROCEDURAL_OPTIMIZATION option is enabled but the "
"CMAKE_POSITION_INDEPENDENT_CODE option is disabled. This has been "
"found to result in broken builds on certain platforms.")
endif()
set(CMAKE_POSITION_INDEPENDENT_CODE OFF)
endif()
#-------------------------------------------------------------------------------
# MacOS-specific things