895a72111b
With -platform_version flags for two distinct platforms,
this writes a LC_BUILD_VERSION header for each.
The motivation is that this is needed for self-hosting with lld as linker
after D124059.
To create a zippered output at the clang driver level, pass
-target arm64-apple-macos -darwin-target-variant arm64-apple-ios-macabi
to create a zippered dylib.
(In Xcode's clang, `-darwin-target-variant` is spelled just `-target-variant`.)
(If you pass `-target arm64-apple-ios-macabi -target-variant arm64-apple-macos`
instead, ld64 crashes!)
This results in two -platform_version flags being passed to the linker.
ld64 also verifies that the iOS SDK version is at least 13.1. We don't do that
yet. But ld64 also does that for other platforms and we don't. So we need to
do that at some point, but not in this patch.
Only dylib and bundle outputs can be zippered.
I verified that a Catalyst app linked against a dylib created with
clang -shared foo.cc -o libfoo.dylib \
-target arm64-apple-macos \
-target-variant arm64-apple-ios-macabi \
-Wl,-install_name,@rpath/libfoo.dylib \
-fuse-ld=$PWD/out/gn/bin/ld64.lld
runs successfully. (The app calls a function `f()` in libfoo.dylib
that returns a const char* "foo", and NSLog(@"%s")s it.)
ld64 is a bit more permissive when writing zippered outputs,
see references to "unzippered twins". That's not implemented yet.
(If anybody wants to implement that, D124275 is a good start.)
Differential Revision: https://reviews.llvm.org/D124887
81 lines
3.5 KiB
ArmAsm
81 lines
3.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t.o
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### We test every platform keyword. Sometimes good keywords are coupled
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### with bad version strings, so we use *-NOT patterns to ensure that
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### no "malformed platform" diagnostic appears in those cases.
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version \
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# RUN: | FileCheck --check-prefix=FAIL-MISSING %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version wtf \
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# RUN: | FileCheck --check-prefix=FAIL-MISSING %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version lolz 1.2.3.4.5 \
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# RUN: | FileCheck --check-prefix=FAIL-MISSING %s
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# FAIL-MISSING: -platform_version: missing argument
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# FAIL-MISSING-NOT: malformed platform: {{.*}}
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# FAIL-MISSING-NOT: malformed {{minimum|sdk}} version: {{.*}}
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version macOS -lfoo 2 \
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# RUN: | FileCheck --check-prefix=FAIL-MALFORM %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version iOS 1 2.a \
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# RUN: | FileCheck --check-prefix=FAIL-MALFORM %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version tvOS 1.2.3.4.5 10 \
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# RUN: | FileCheck --check-prefix=FAIL-MALFORM %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version watchOS 10 1.2.3.4.5 \
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# RUN: | FileCheck --check-prefix=FAIL-MALFORM %s
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# FAIL-MALFORM-NOT: malformed platform: {{.*}}
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# FAIL-MALFORM: malformed {{minimum|sdk}} version: {{.*}}
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version bridgeOS 1 5
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version "Mac Catalyst" 1.2 5.6
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version "iOS Simulator" 1.2.3 5.6.7
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version tvOS-Simulator 1.2.3.4 5.6.7.8
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version watchOS-Simulator 1 5
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version 1 1 5
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# RUN: %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version 9 1 5
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version wtf 1 5 \
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# RUN: | FileCheck --check-prefix=FAIL-PLATFORM %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version 0 1 5 \
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# RUN: | FileCheck --check-prefix=FAIL-PLATFORM %s
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version 11 1 5 \
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# RUN: | FileCheck --check-prefix=FAIL-PLATFORM %s
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# FAIL-PLATFORM: malformed platform: {{.*}}
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# FAIL-PLATFORM-NOT: malformed {{minimum|sdk}} version: {{.*}}
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o -fatal_warnings 2>&1 \
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# RUN: -platform_version iOS 14.0 15.0 \
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# RUN: -platform_version macos 12.0 12.0 \
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# RUN: | FileCheck --check-prefix=FAIL-TODO %s
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# FAIL-TODO: lld supports writing zippered outputs only for macos and mac-catalyst
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# RUN: not %no-arg-lld -arch x86_64 -o %t %t.o 2>&1 \
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# RUN: -platform_version bridgeOS 1 5 \
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# RUN: -platform_version 'mac catalyst' 14.0 15.0 \
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# RUN: -platform_version macos 12.0 12.0 \
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# RUN: | FileCheck --check-prefix=FAIL-TOOMANY %s
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# FAIL-TOOMANY: must specify -platform_version at most twice
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.text
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.global _main
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_main:
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mov $0, %eax
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ret
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