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all: switch to LLVM 13

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This adds support for building with `-tags=llvm13` and switches to LLVM
13 for tinygo binaries that are statically linked against LLVM.

Some notes on this commit:

  * Added `-mfloat-abi=soft` to all Cortex-M targets because otherwise
    nrfx would complain that floating point was enabled on Cortex-M0.
    That's not the case, but with `-mfloat-abi=soft` the `__SOFTFP__`
    macro is defined which silences this warning.
    See: https://reviews.llvm.org/D100372
  * Changed from `--sysroot=<root>` to `-nostdlib -isystem <root>` for
    musl because with Clang 13, even with `--sysroot` some system
    libraries are used which we don't want.
  * Changed all `-Xclang -internal-isystem -Xclang` to simply
    `-isystem`, for consistency with the above change. It appears to
    have the same effect.
  * Moved WebAssembly function declarations to the top of the file in
    task_asyncify_wasm.S because (apparently) the assembler has become
    more strict.
This commit is contained in:
Ayke van Laethem
2021-12-09 02:52:08 +01:00
committed by Ron Evans
parent 32a7b8cc4e
commit ebd4969cde
42 changed files with 142 additions and 124 deletions
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Makefile
+4 -4
View File
@@ -10,9 +10,9 @@ LLD_SRC ?= $(LLVM_PROJECTDIR)/lld
# Try to autodetect LLVM build tools.
detect = $(shell command -v $(1) 2> /dev/null && echo $(1))
CLANG ?= $(word 1,$(abspath $(call detect,llvm-build/bin/clang))$(call detect,clang-12)$(call detect,clang-11)$(call detect,clang))
LLVM_AR ?= $(word 1,$(abspath $(call detect,llvm-build/bin/llvm-ar))$(call detect,llvm-ar-12)$(call detect,llvm-ar-11)$(call detect,llvm-ar))
LLVM_NM ?= $(word 1,$(abspath $(call detect,llvm-build/bin/llvm-nm))$(call detect,llvm-nm-12)$(call detect,llvm-nm-11)$(call detect,llvm-nm))
CLANG ?= $(word 1,$(abspath $(call detect,llvm-build/bin/clang))$(call detect,clang-13)$(call detect,clang-12)$(call detect,clang-11)$(call detect,clang))
LLVM_AR ?= $(word 1,$(abspath $(call detect,llvm-build/bin/llvm-ar))$(call detect,llvm-ar-13)$(call detect,llvm-ar-12)$(call detect,llvm-ar-11)$(call detect,llvm-ar))
LLVM_NM ?= $(word 1,$(abspath $(call detect,llvm-build/bin/llvm-nm))$(call detect,llvm-nm-13)$(call detect,llvm-nm-12)$(call detect,llvm-nm-11)$(call detect,llvm-nm))
# Go binary and GOROOT to select
GO ?= go
@@ -159,7 +159,7 @@ gen-device-rp: build/gen-device-svd
# Get LLVM sources.
$(LLVM_PROJECTDIR)/llvm:
git clone -b xtensa_release_12.0.1 --depth=1 https://github.com/tinygo-org/llvm-project $(LLVM_PROJECTDIR)
git clone -b xtensa_release_13.0.0 --depth=1 https://github.com/tinygo-org/llvm-project $(LLVM_PROJECTDIR)
llvm-source: $(LLVM_PROJECTDIR)/llvm
# Configure LLVM.