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From 599bfa2b29c7d50d0871010e282414d94acaf68f Mon Sep 17 00:00:00 2001
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From: Elliott Sales de Andrade <quantum.analyst@gmail.com>
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Date: Mon, 3 Jan 2022 18:40:21 -0500
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Subject: [PATCH 3/9] arm: Explicitly disable unwind tables
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Some clang builds (e.g., Fedora's) enable unwind tables by default. As
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tinygo does not need nor support them, that leads to undefined symbols
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when linking.
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Signed-off-by: Elliott Sales de Andrade <quantum.analyst@gmail.com>
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---
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builder/library.go | 2 +-
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compileopts/target.go | 1 +
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2 files changed, 2 insertions(+), 1 deletion(-)
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diff --git a/builder/library.go b/builder/library.go
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index 73079785..012e4053 100644
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--- a/builder/library.go
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+++ b/builder/library.go
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@@ -120,7 +120,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
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}
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}
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if strings.HasPrefix(target, "arm") || strings.HasPrefix(target, "thumb") {
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- args = append(args, "-fshort-enums", "-fomit-frame-pointer", "-mfloat-abi=soft")
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+ args = append(args, "-fshort-enums", "-fomit-frame-pointer", "-mfloat-abi=soft", "-fno-unwind-tables")
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}
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if strings.HasPrefix(target, "riscv32-") {
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args = append(args, "-march=rv32imac", "-mabi=ilp32", "-fforce-enable-int128")
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diff --git a/compileopts/target.go b/compileopts/target.go
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index 2e5f5487..829b481e 100644
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--- a/compileopts/target.go
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+++ b/compileopts/target.go
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@@ -256,6 +256,7 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
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spec.Features = "+cx8,+fxsr,+mmx,+sse,+sse2,+x87"
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case "arm":
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spec.CPU = "generic"
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+ spec.CFlags = append(spec.CFlags, "-fno-unwind-tables")
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switch strings.Split(triple, "-")[0] {
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case "armv5":
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spec.Features = "+armv5t,+strict-align,-thumb-mode"
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--
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2.31.1
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