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build: detect arm32 assembly by default #1752

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build: detect arm32 assembly by default #1752

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7a613ce
build: remove assembly detection when explicitly disabled
Raimo33 Sep 20, 2025
d767826
build: detect arm32 assembly by default
Raimo33 Sep 20, 2025
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20 changes: 8 additions & 12 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -90,25 +90,21 @@ mark_as_advanced(FORCE SECP256K1_TEST_OVERRIDE_WIDE_MULTIPLY)
set(SECP256K1_ASM "AUTO" CACHE STRING "Assembly to use: \"AUTO\", \"OFF\", \"x86_64\" or \"arm32\" (experimental). [default=AUTO]")
set_property(CACHE SECP256K1_ASM PROPERTY STRINGS "AUTO" "OFF" "x86_64" "arm32")
check_string_option_value(SECP256K1_ASM)
if(SECP256K1_ASM STREQUAL "arm32")
if(NOT SECP256K1_ASM STREQUAL "OFF")
enable_language(ASM)
include(CheckX86_64Assembly)
include(CheckArm32Assembly)
check_x86_64_assembly()
check_arm32_assembly()
if(HAVE_ARM32_ASM)
add_compile_definitions(USE_EXTERNAL_ASM=1)
else()
if(SECP256K1_ASM STREQUAL "arm32" AND NOT HAVE_ARM32_ASM)
message(FATAL_ERROR "ARM32 assembly requested but not available.")
elseif(SECP256K1_ASM STREQUAL "x86_64" AND NOT HAVE_X86_64_ASM)
message(FATAL_ERROR "x86_64 assembly requested but not available.")
endif()
elseif(SECP256K1_ASM)
include(CheckX86_64Assembly)
check_x86_64_assembly()
if(HAVE_X86_64_ASM)
set(SECP256K1_ASM "x86_64")
add_compile_definitions(USE_ASM_X86_64=1)
elseif(SECP256K1_ASM STREQUAL "AUTO")
set(SECP256K1_ASM "OFF")
else()
message(FATAL_ERROR "x86_64 assembly requested but not available.")
elseif(HAVE_ARM32_ASM)
add_compile_definitions(USE_EXTERNAL_ASM=1)
endif()
endif()

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