68 lines
1.7 KiB
Bash
Executable File
68 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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set -e -o pipefail
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# This script wraps the go cross compilers.
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#
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# It ensures that Go binaries are linked with an external linker
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# by default (cross clang). Appropriate flags are added to build a
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# position independent executable (PIE) for ASLR.
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# "export GOPIE=0" to temporarily disable this behavior.
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function pie_enabled()
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{
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[[ "${GOPIE}" != "0" ]]
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}
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function has_ldflags()
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{
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# Check if any linker flags are present in argv.
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for arg in "$@"
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do
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case "${arg}" in
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-ldflags | -ldflags=*) return 0 ;;
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-linkmode | -linkmode=*) return 0 ;;
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-buildmode | -buildmode=*) return 0 ;;
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-installsuffix | -installsuffix=*) return 0 ;;
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-extld | -extld=*) return 0 ;;
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-extldflags | -extldflags=*) return 0 ;;
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esac
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done
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return 1
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}
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pie_flags=()
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if pie_enabled && ! has_ldflags "$@"
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then
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case "$1" in
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build | install | run | test)
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# Add "-buildmode=pie" to "go build|install|run|test" commands.
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pie_flags=( "$1" )
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shift
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[[ "${GOOS}" == "android" ]] || pie_flags+=( "-buildmode=pie" )
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;;
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tool)
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case "$2" in
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asm)
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# Handle direct assembler invocations ("go tool asm <args>").
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pie_flags=( "$1" "$2" "-shared" )
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shift 2
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;;
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compile)
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# Handle direct compiler invocations ("go tool compile <args>").
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pie_flags=( "$1" "$2" "-shared" )
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shift 2
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[[ "${GOOS}" == "android" ]] || pie_flags+=( "-installsuffix=shared" )
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;;
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link)
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# Handle direct linker invocations ("go tool link <args>").
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pie_flags=( "$1" "$2" "-extld" "${CC}" "-buildmode=pie" )
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shift 2
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[[ "${GOOS}" == "android" ]] || pie_flags+=( "-installsuffix=shared" )
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;;
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esac
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;;
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esac
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fi
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exec go "${pie_flags[@]}" "$@"
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