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Enable Android 16 KB page size support #22076

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merged 2 commits into from
Sep 19, 2024
Merged

Enable Android 16 KB page size support #22076

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3239d4a
Enable 16KB page size support when building shared libraries on Android
skottmckay Sep 12, 2024
66269cb
Fix casing
skottmckay Sep 12, 2024
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6 changes: 5 additions & 1 deletion cmake/adjust_global_compile_flags.cmake
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Original file line number Diff line number Diff line change
@@ -1,11 +1,15 @@
# work around Android NDK bug which doesn't include -O flag for Release configuration
# https://github.com/android/ndk/issues/1740
# TODO: remove this when the NDK version(s) we support get fixed
if (CMAKE_SYSTEM_NAME STREQUAL "Android")
if (ANDROID)
# NB: attempting to match the effects of this fix: https://android-review.googlesource.com/c/platform/ndk/+/2168845
string(APPEND CMAKE_C_FLAGS_RELEASE " -O3")
string(APPEND CMAKE_CXX_FLAGS_RELEASE " -O3")
string(APPEND CMAKE_ASM_FLAGS_RELEASE " -O3")

# Build shared libraries with support for 16 KB ELF alignment
# https://source.android.com/docs/core/architecture/16kb-page-size/16kb#build-lib-16kb-alignment
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,max-page-size=16384")
endif()

# Suggested by https://gitlab.kitware.com/cmake/cmake/-/issues/20132
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