59 lines
2.0 KiB
CMake
59 lines
2.0 KiB
CMake
# Cross-compilation file for WebAssembly with WASI.
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# To use, pass -DCMAKE_TOOLCHAIN_FILE=cmake/wasm32-wasi-toolchain.cmake in your CMake command line.
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# You'll also need to specify a sysroot directory with -DHYDROGEN_WASM32_WASI_SYSROOT_DIR=XXX.
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cmake_minimum_required(VERSION 3.12)
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set(project_setting_prefix HYDROGEN)
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set(setting_prefix "${project_setting_prefix}_WASM32_WASI")
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function(get_setting setting_name setting_type setting_description)
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string(TOUPPER "${setting_prefix}_${setting_name}" setting_external_name)
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set("${setting_external_name}" "" CACHE "${setting_type}" "${setting_description}")
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set("${setting_name}" "${${setting_external_name}}" PARENT_SCOPE)
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endfunction()
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# Sysroot setting
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get_setting(sysroot_dir STRING "Directory containing the wasm32-wasi sysroot.")
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# Locate toolchain programs
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set(program_prefix "${setting_prefix}_PROGRAM")
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function(find_in_toolchain program_name)
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string(TOUPPER "${program_prefix}_${program_name}" program_external_name)
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string(REPLACE "_" "-" program_file_name "${program_name}")
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find_program("${program_external_name}" "${program_file_name}")
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if("${${program_external_name}}" STREQUAL "${program_external_name}-NOTFOUND")
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message(FATAL_ERROR "Couldn't find toolchain program ${program_file_name}")
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else()
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set("${program_name}" "${${program_external_name}}" PARENT_SCOPE)
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endif()
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endfunction()
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find_in_toolchain(clang)
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find_in_toolchain(llvm_ranlib)
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find_in_toolchain(llvm_ar)
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find_in_toolchain(llvm_nm)
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find_in_toolchain(llvm_strip)
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# Configure CMake toolchain settings
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set(CMAKE_SYSTEM_NAME Generic)
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set(CMAKE_C_COMPILER "${clang}")
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set(CMAKE_ASM_COMPILER "${clang}")
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set(CMAKE_RANLIB "${llvm_ranlib}")
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set(CMAKE_AR "${llvm_ar}")
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set(CMAKE_NM "${llvm_nm}")
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set(CMAKE_STRIP "${llvm_strip}")
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set(CMAKE_C_OUTPUT_EXTENSION .o)
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set(CMAKE_ASM_OUTPUT_EXTENSION .o)
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# Set compile flags
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string(CONCAT CMAKE_C_FLAGS " -DED25519_NONDETERMINISTIC=1 --target=wasm32-wasi"
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" --sysroot=${sysroot_dir} -Wl,--stack-first")
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