[elf] understand -no-pie #11874
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[elf] understand -no-pie #11874
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This passes -Wl,-no-pie linker arg. Golang uses that. From the `ld(1)` man page: Create a position dependent executable. This is the default. Not adding to the help text, because this is the default.
motiejus
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Jun 16, 2022
Pass `-pagezero_size` to the MachO linker. This is the final "unsupported linker arg" that I could chase that CGo uses. After this and ziglang#11874 we may be able to fail on an "unsupported linker arg" instead of emiting a warning. Test case: zig=/code/zig/build/zig CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 CC="$zig cc -target x86_64-macos" CXX="$zig c++ -target x86_64-macos" go build -a -ldflags "-s -w" cgo.go I compiled a trivial CGo program and executed it on an amd64 Darwin host. To be honest, I am not entirely sure what this is doing. This feels right after reading what this argument does in LLVM sources, but I am by no means qualified to make MachO pull requests. Will take feedback.
kubkon
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Jun 20, 2022
Pass `-pagezero_size` to the MachO linker. This is the final "unsupported linker arg" that I could chase that CGo uses. After this and ziglang#11874 we may be able to fail on an "unsupported linker arg" instead of emiting a warning. Test case: zig=/code/zig/build/zig CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 CC="$zig cc -target x86_64-macos" CXX="$zig c++ -target x86_64-macos" go build -a -ldflags "-s -w" cgo.go I compiled a trivial CGo program and executed it on an amd64 Darwin host. To be honest, I am not entirely sure what this is doing. This feels right after reading what this argument does in LLVM sources, but I am by no means qualified to make MachO pull requests. Will take feedback.
motiejus
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Jun 22, 2022
Currently `zig cc`, when confronted with a linker argument it does not understand, skips the flag and emits a warning. This has been causing headaches for people that build third-party software (including me). Zig seemingly builds and links the final executable, only to segfault when running it. If there are linker warnings when compiling software, the first thing we have to do is add support for ones linker is complaining, and only then go file issues. If zig "successfully" (i.e. status code = 0) compiles a binary, there is instead a tendency to blaim "zig doing something weird". (I am guilty of this.) In my experience, adding the unsupported arguments has been quite easy; see ziglang#11679, ziglang#11875, ziglang#11874 for recent examples. With the current ones (+ prerequisites below) I was able to build all of the CGo programs that I am encountering at $dayjob. CGo is a reasonable example, because it is exercising the unusual linker args quite a bit. Prerequisites: ziglang#11614 and ziglang#11863.
kubkon
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to motiejus/zig
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Jun 25, 2022
Currently `zig cc`, when confronted with a linker argument it does not understand, skips the flag and emits a warning. This has been causing headaches for people that build third-party software (including me). Zig seemingly builds and links the final executable, only to segfault when running it. If there are linker warnings when compiling software, the first thing we have to do is add support for ones linker is complaining, and only then go file issues. If zig "successfully" (i.e. status code = 0) compiles a binary, there is instead a tendency to blaim "zig doing something weird". (I am guilty of this.) In my experience, adding the unsupported arguments has been quite easy; see ziglang#11679, ziglang#11875, ziglang#11874 for recent examples. With the current ones (+ prerequisites below) I was able to build all of the CGo programs that I am encountering at $dayjob. CGo is a reasonable example, because it is exercising the unusual linker args quite a bit. Prerequisites: ziglang#11614 and ziglang#11863.
andrewrk
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Jul 19, 2022
Pass `-pagezero_size` to the MachO linker. This is the final "unsupported linker arg" that I could chase that CGo uses. After this and #11874 we may be able to fail on an "unsupported linker arg" instead of emiting a warning. Test case: zig=/code/zig/build/zig CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 CC="$zig cc -target x86_64-macos" CXX="$zig c++ -target x86_64-macos" go build -a -ldflags "-s -w" cgo.go I compiled a trivial CGo program and executed it on an amd64 Darwin host. To be honest, I am not entirely sure what this is doing. This feels right after reading what this argument does in LLVM sources, but I am by no means qualified to make MachO pull requests. Will take feedback.
wooster0
pushed a commit
to wooster0/zig
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this pull request
Jul 24, 2022
Pass `-pagezero_size` to the MachO linker. This is the final "unsupported linker arg" that I could chase that CGo uses. After this and ziglang#11874 we may be able to fail on an "unsupported linker arg" instead of emiting a warning. Test case: zig=/code/zig/build/zig CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 CC="$zig cc -target x86_64-macos" CXX="$zig c++ -target x86_64-macos" go build -a -ldflags "-s -w" cgo.go I compiled a trivial CGo program and executed it on an amd64 Darwin host. To be honest, I am not entirely sure what this is doing. This feels right after reading what this argument does in LLVM sources, but I am by no means qualified to make MachO pull requests. Will take feedback.
andrewrk
pushed a commit
to motiejus/zig
that referenced
this pull request
Dec 12, 2022
Currently `zig cc`, when confronted with a linker argument it does not understand, skips the flag and emits a warning. This has been causing headaches for people that build third-party software (including me). Zig seemingly builds and links the final executable, only to segfault when running it. If there are linker warnings when compiling software, the first thing we have to do is add support for ones linker is complaining, and only then go file issues. If zig "successfully" (i.e. status code = 0) compiles a binary, there is instead a tendency to blaim "zig doing something weird". (I am guilty of this.) In my experience, adding the unsupported arguments has been quite easy; see ziglang#11679, ziglang#11875, ziglang#11874 for recent examples. With the current ones (+ prerequisites below) I was able to build all of the CGo programs that I am encountering at $dayjob. CGo is a reasonable example, because it is exercising the unusual linker args quite a bit. Prerequisites: ziglang#11614 and ziglang#11863.
andrewrk
pushed a commit
to motiejus/zig
that referenced
this pull request
Jan 27, 2023
Currently `zig cc`, when confronted with a linker argument it does not understand, skips the flag and emits a warning. This has been causing headaches for people that build third-party software (including me). Zig seemingly builds and links the final executable, only to segfault when running it. If there are linker warnings when compiling software, the first thing we have to do is add support for ones linker is complaining, and only then go file issues. If zig "successfully" (i.e. status code = 0) compiles a binary, there is instead a tendency to blaim "zig doing something weird". (I am guilty of this.) In my experience, adding the unsupported arguments has been quite easy; see ziglang#11679, ziglang#11875, ziglang#11874 for recent examples. With the current ones (+ prerequisites below) I was able to build all of the CGo programs that I am encountering at $dayjob. CGo is a reasonable example, because it is exercising the unusual linker args quite a bit. Prerequisites: ziglang#11614 and ziglang#11863.
motiejus
added a commit
to motiejus/zig
that referenced
this pull request
Feb 9, 2023
Currently `zig cc`, when confronted with a linker argument it does not understand, skips the flag and emits a warning. This has been causing headaches for people that build third-party software (including me). Zig seemingly builds and links the final executable, only to segfault when running it. If there are linker warnings when compiling software, the first thing we have to do is add support for ones linker is complaining, and only then go file issues. If zig "successfully" (i.e. status code = 0) compiles a binary, there is instead a tendency to blaim "zig doing something weird". (I am guilty of this.) In my experience, adding the unsupported arguments has been quite easy; see ziglang#11679, ziglang#11875, ziglang#11874 for recent examples. With the current ones (+ prerequisites below) I was able to build all of the CGo programs that I am encountering at $dayjob. CGo is a reasonable example, because it is exercising the unusual linker args quite a bit. Prerequisites: ziglang#11614 and ziglang#11863.
andrewrk
pushed a commit
that referenced
this pull request
Feb 17, 2023
Currently `zig cc`, when confronted with a linker argument it does not understand, skips the flag and emits a warning. This has been causing headaches for people that build third-party software (including me). Zig seemingly builds and links the final executable, only to segfault when running it. If there are linker warnings when compiling software, the first thing we have to do is add support for ones linker is complaining, and only then go file issues. If zig "successfully" (i.e. status code = 0) compiles a binary, there is instead a tendency to blaim "zig doing something weird". (I am guilty of this.) In my experience, adding the unsupported arguments has been quite easy; see #11679, #11875, #11874 for recent examples. With the current ones (+ prerequisites below) I was able to build all of the CGo programs that I am encountering at $dayjob. CGo is a reasonable example, because it is exercising the unusual linker args quite a bit. Prerequisites: #11614 and #11863.
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This passes -Wl,-no-pie linker arg. Golang uses that. From the
ld(1)man page:
Create a position dependent executable. This is the default.
Not adding to the help text, because this is the default.