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https://github.com/libretro/Lakka-LibreELEC.git
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31 lines
1.1 KiB
Plaintext
31 lines
1.1 KiB
Plaintext
# determines TARGET_CPU, if not forced by user
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if [ -z "${TARGET_CPU}" ]; then
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TARGET_CPU="x86-64"
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fi
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# determine architecture's family
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TARGET_SUBARCH="x86_64"
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TARGET_GCC_ARCH="${TARGET_SUBARCH/-/}"
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TARGET_KERNEL_ARCH="x86"
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# setup ARCH specific *FLAGS
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TARGET_CFLAGS="-march=${TARGET_CPU}"
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TARGET_LDFLAGS=""
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# build with microarchitecture feature support defined by the TARGET_CPU value
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# see https://gitlab.com/x86-psABIs/x86-64-ABI/-/wikis/home for further details
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if [ -z "${TARGET_FEATURES}" ]; then
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TARGET_FEATURES="64bit cmov cx8 fpu fxsr mmx osfxsr sce sse sse2"
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TARGET_FEATURES_X86_64_V2="cmpxchg16b lahf-sahf popcnt sse3 sse4_1 sse4_2 ssse3"
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TARGET_FEATURES_X86_64_V3="avx avx2 bmi1 bmi2 f16c fma lzcnt movbe osxsave"
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if [ "${TARGET_CPU}" = "x86-64" ]; then
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TARGET_FEATURES+=" no_sahf"
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elif [ "${TARGET_CPU}" = "x86-64-v2" ]; then
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TARGET_FEATURES+=" ${TARGET_FEATURES_X86_64_V2}"
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elif [ "${TARGET_CPU}" = "x86-64-v3" ]; then
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TARGET_FEATURES+=" ${TARGET_FEATURES_X86_64_V2} ${TARGET_FEATURES_X86_64_V3}"
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fi
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fi
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TARGET_FEATURES="$(echo ${TARGET_FEATURES} | xargs -n1 | sort -u | xargs)"
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