fix(luajit): support building on aarch64 hosts#15412
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No fault of yours @bryanforbes but let’s discuss to make this simplified next week or remove this alternative package altogether. |
LuaJIT requires its host tools (minilua, buildvm) to match the target's bitness. On x86_64 hosts this is solved with gcc -m32, but aarch64 has no equivalent flag. Use Buildroot's own cross-compiler (TARGET_CC) to build the host tools as static arm32 binaries, which run natively on aarch64 via the kernel's 32-bit compat mode (CONFIG_COMPAT). Also use TARGET_CFLAGS/TARGET_LDFLAGS for the host tools on aarch64, since HOST_CFLAGS/HOST_LDFLAGS contain aarch64-specific include/library paths that are wrong for arm32. Skip selecting BR2_HOSTARCH_NEEDS_IA32_COMPILER on aarch64 since the IA32 multilib check is not applicable.
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LuaJIT requires its host tools (minilua, buildvm) to match the target's bitness. On x86_64 hosts this is solved with gcc -m32, but aarch64 has no equivalent flag.
Use Buildroot's own cross-compiler (TARGET_CC) to build the host tools as static arm32 binaries, which run natively on aarch64 via the kernel's 32-bit compat mode (CONFIG_COMPAT). Also use TARGET_CFLAGS/TARGET_LDFLAGS for the host tools on aarch64, since HOST_CFLAGS/HOST_LDFLAGS contain aarch64-specific include/library paths that are wrong for arm32.
Skip selecting BR2_HOSTARCH_NEEDS_IA32_COMPILER on aarch64 since the IA32 multilib check is not applicable.