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riscv64 target llvm error
project.json
{
// Language version of C3.
"langrev": "1",
// Warnings used for all targets.
"warnings": [ "no-unused" ],
// Directories where C3 library files may be found.
"dependency-search-paths": [ "/root/c3/lib" ],
// Libraries to use for all targets.
"dependencies": [ ],
// Authors, optionally with email.
"authors": [ "wizard-lgtm" ],
// Version using semantic versioning.
"version": "0.1.0",
// Sources compiled for all targets.
"sources": [ "src/**" ],
"output": "build",
// Architecture and OS target.
// You can use 'c3c --list-targets' to list all valid targets.
// "target": "windows-x64",
"target": "elf-riscv64", // riscv64
// Targets.
"targets": {
"barebones_c3": {
// Executable or library.
"type": "executable",
// Additional libraries, sources
// and overrides of global settings here.
},
},
// Global settings.
// CPU name, used for optimizations in the LLVM backend.
"cpu": "generic",
// Optimization: "O0", "O1", "O2", "O3", "O4", "O5", "Os", "Oz".
"opt": "O0"
// See resources/examples/project_all_settings.json and 'c3c --list-project-properties' to see more properties.
}
root@DESKTOP-P9MNADN:~/barebones_c3# c3c build --no-entry
WARNING! This architecture is unsupported.
] Assuming non-Posix environment
ld.lld: error: undefined symbol: __divdi3
>>> referenced by math.c3:1021 (/root/c3/lib/std/math/math.c3:1021)
>>> build/obj/elf-riscv64/std.core.mem.o:(std.core.mem.aligned_offset)
>>> referenced by formatter_private.c3:35 (/root/c3/lib/std/io/formatter_private.c3:35)
>>> build/obj/elf-riscv64/std.io.o:(std.io.Formatter.floatformat)
>>> referenced by formatter_private.c3:35 (/root/c3/lib/std/io/formatter_private.c3:35)
>>> build/obj/elf-riscv64/std.io.o:(std.io.Formatter.floatformat)
>>> referenced 3 more times
>>> did you mean: __divti3
>>> defined in: build/obj/elf-riscv64/std.math.o
ld.lld: error: undefined symbol: __muldi3
>>> referenced by math.c3:0 (/root/c3/lib/std/math/math.c3:0)
>>> build/obj/elf-riscv64/std.core.mem.o:(std.core.mem.aligned_offset)
>>> referenced by math_i128.c3:273
>>> build/obj/elf-riscv64/std.math.o:(std.math.__mulddi3)
>>> referenced by math_i128.c3:275
>>> build/obj/elf-riscv64/std.math.o:(std.math.__mulddi3)
>>> referenced 44 more times
>>> did you mean: __multi3
>>> defined in: build/obj/elf-riscv64/std.math.o
ld.lld: error: undefined symbol: __atomic_compare_exchange_1
>>> referenced by atomic_nolibc.c3:37
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by atomic_nolibc.c3:37
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by atomic_nolibc.c3:38
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced 12 more times
ld.lld: error: undefined symbol: __atomic_compare_exchange_2
>>> referenced by atomic_nolibc.c3:9
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by atomic_nolibc.c3:9
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by atomic_nolibc.c3:9
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced 12 more times
ld.lld: error: undefined symbol: __atomic_compare_exchange_4
>>> referenced by atomic_nolibc.c3:11
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by atomic_nolibc.c3:11
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by atomic_nolibc.c3:11
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced 12 more times
ld.lld: error: undefined symbol: __atomic_compare_exchange_8
>>> referenced by builtin.c3:189 (/root/c3/lib/std/core/builtin.c3:189)
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by builtin.c3:189 (/root/c3/lib/std/core/builtin.c3:189)
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced by builtin.c3:189 (/root/c3/lib/std/core/builtin.c3:189)
>>> build/obj/elf-riscv64/std.atomic.o:(__atomic_compare_exchange)
>>> referenced 12 more times
ld.lld: error: undefined symbol: __eqdf2
>>> referenced by builtin.c3:237 (/root/c3/lib/std/core/builtin.c3:237)
>>> build/obj/elf-riscv64/std.math.o:(std.math._frexp)
>>> referenced by math_builtin.c3:21
>>> build/obj/elf-riscv64/std.math.o:(__powidf2)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r)
>>> referenced 25 more times
ld.lld: error: undefined symbol: __unorddf2
>>> referenced by builtin.c3:237 (/root/c3/lib/std/core/builtin.c3:237)
>>> build/obj/elf-riscv64/std.math.o:(std.math._frexp)
>>> referenced by math_builtin.c3:21
>>> build/obj/elf-riscv64/std.math.o:(__powidf2)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r)
>>> referenced 22 more times
ld.lld: error: undefined symbol: __muldf3
>>> referenced by math.c3:1089
>>> build/obj/elf-riscv64/std.math.o:(std.math._frexp)
>>> referenced by math_builtin.c3:18
>>> build/obj/elf-riscv64/std.math.o:(__powidf2)
>>> referenced by math_builtin.c3:19
>>> build/obj/elf-riscv64/std.math.o:(__powidf2)
>>> referenced 203 more times
ld.lld: error: undefined symbol: __divsf3
>>> referenced by math_builtin.c3:6
>>> build/obj/elf-riscv64/std.math.o:(roundevenf)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f.2)
>>> referenced 13 more times
ld.lld: error: undefined symbol: __addsf3
>>> referenced by math.c3:492
>>> build/obj/elf-riscv64/std.math.o:(roundevenf)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced 62 more times
ld.lld: error: undefined symbol: __divdf3
>>> referenced by math_builtin.c3:12
>>> build/obj/elf-riscv64/std.math.o:(roundeven)
>>> referenced by math_builtin.c3:21
>>> build/obj/elf-riscv64/std.math.o:(__powidf2)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r)
>>> referenced 18 more times
ld.lld: error: undefined symbol: __adddf3
>>> referenced by math.c3:492
>>> build/obj/elf-riscv64/std.math.o:(roundeven)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r)
>>> referenced 258 more times
ld.lld: error: undefined symbol: __udivdi3
>>> referenced by math_i128.c3:7
>>> build/obj/elf-riscv64/std.math.o:(__divti3)
>>> referenced by math_i128.c3:7
>>> build/obj/elf-riscv64/std.math.o:(__divti3)
>>> referenced by math_i128.c3:8
>>> build/obj/elf-riscv64/std.math.o:(__divti3)
>>> referenced 4 more times
ld.lld: error: undefined symbol: __umoddi3
>>> referenced by math_i128.c3:15
>>> build/obj/elf-riscv64/std.math.o:(__umodti3)
>>> referenced by math_i128.c3:16
>>> build/obj/elf-riscv64/std.math.o:(__umodti3)
>>> referenced by math_i128.c3:16
>>> build/obj/elf-riscv64/std.math.o:(__umodti3)
ld.lld: error: undefined symbol: __mulsf3
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced 50 more times
ld.lld: error: undefined symbol: __eqsf2
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f.2)
>>> referenced by log1p.c3:0
>>> build/obj/elf-riscv64/std.math.nolibc.o:(log1pf)
>>> referenced 10 more times
ld.lld: error: undefined symbol: __unordsf2
>>> referenced by asin.c3:30
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f)
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._r_f.2)
>>> referenced by log1p.c3:0
>>> build/obj/elf-riscv64/std.math.nolibc.o:(log1pf)
>>> referenced 10 more times
ld.lld: error: undefined symbol: __gedf2
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._exp2_specialcase)
>>> referenced by rempi.c3:138
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc.__rem_pio2_large)
>>> referenced by rempi.c3:142
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc.__rem_pio2_large)
ld.lld: error: undefined symbol: __subdf3
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._exp2_specialcase)
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._exp2_specialcase)
>>> referenced by asin.c3:31
>>> build/obj/elf-riscv64/std.math.nolibc.o:(std.math.nolibc._exp2_specialcase)
>>> referenced 106 more times
ld.lld: error: too many errors emitted, stopping now (use --error-limit=0 to see all errors)
Failed to create an executable: (null)
Yes, it's probably quite a bit of work to make it behave properly. For now, you can avoid all of this by using --use-stdlib=no. This will not include the stdlib, but you'll be able to make progress.
Ok, the problem was that it defaulted to rv32i / rv64i. If you have a processor with multiply, you need to specify it. You now can do --cpu-flags +m to enable multiplication. More can be added as needed. I have another task here to fix to give some nice defaults.
--riscv-cpu is now added as way to quickly set a good default. With this I consider this done. Can you try it?