svn commit: r527545 - in head/lang: rust-nightly/files rust/files
Tobias Kortkamp
tobik at FreeBSD.org
Sun Mar 1 11:09:46 UTC 2020
Author: tobik
Date: Sun Mar 1 11:09:44 2020
New Revision: 527545
URL: https://svnweb.freebsd.org/changeset/ports/527545
Log:
lang/rust: Attempt to address unreliable rust-lld build
It sometimes fails [0,1] and sometimes succeeds [2,3]. When it
fails it fails with
running: "cmake" "/wrkdirs/usr/ports/lang/rust/work/rustc-1.41.1-src/src/llvm-project/lld" "-DCMAKE_INSTALL_MESSAGE=LAZY" "-DCMAKE_C_COMPILER=cc" "-DCMAKE_CXX_COMPILER=c++" "-DCMAKE_C_FLAGS=-ffunction-sections -fdata-sections -fPIC -m64 -pipe -fstack-protector-strong -fno-strict-aliasing" "-DCMAKE_CXX_FLAGS=-ffunction-sections -fdata-sections -fPIC -m64 -pipe -fstack-protector-strong -fno-strict-aliasing" "-DLLVM_CONFIG_PATH=/wrkdirs/usr/ports/lang/rust/work/rustc-1.41.1-src/build/bootstrap/debug/deps/llvm-config-wrapper" "-DLLVM_INCLUDE_TESTS=OFF" "-DCMAKE_INSTALL_PREFIX=/wrkdirs/usr/ports/lang/rust/work/rustc-1.41.1-src/build/x86_64-unknown-freebsd/lld" "-DCMAKE_BUILD_TYPE=Release"
-- The C compiler identification is Clang 9.0.1
-- The CXX compiler identification is Clang 9.0.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:23 (message):
llvm-config failed with status No such file or directory
-- Configuring incomplete, errors occurred!
There seems to be some kind of race when using llvm-config-wrapper,
but at the point where LLD is built, both llvm-config and
llvm-config-wrapper should definitely be available. Both are built
successfully much earlier in the build. Attempt to improve reliability
by not using the wrapper. It is a hack in the first place that is
only really needed on Windows.
This is a shot in the dark. I am unable to reproduce this myself.
[0] http://beefy18.nyi.freebsd.org/data/head-amd64-default/p527397_s358451/logs/errors/rust-1.41.1.log
[1] http://gohan03.nyi.freebsd.org/data/head-amd64-default-baseline/p527486_s358478/logs/errors/rust-1.41.1.log
[2] http://beefy18.nyi.freebsd.org/data/head-amd64-default/p527397_s358451/logs/rust-nightly-1.43.0.20200228.log
[3] http://gohan03.nyi.freebsd.org/data/head-amd64-default-baseline/p527313_s358414/logs/rust-1.41.1.log
Added:
head/lang/rust-nightly/files/patch-src_bootstrap_native.rs (contents, props changed)
head/lang/rust/files/patch-src_bootstrap_native.rs (contents, props changed)
Added: head/lang/rust-nightly/files/patch-src_bootstrap_native.rs
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lang/rust-nightly/files/patch-src_bootstrap_native.rs Sun Mar 1 11:09:44 2020 (r527545)
@@ -0,0 +1,34 @@
+There seems to be some kind of race when using llvm-config-wrapper
+for building rust-lld. Attempt to improve reliability of the build
+by not using it. llvm-config-wrapper is a hack in the first place
+that is only really needed on Windows.
+
+--- src/bootstrap/native.rs.orig 2020-02-27 18:39:49 UTC
++++ src/bootstrap/native.rs
+@@ -467,25 +467,9 @@ impl Step for Lld {
+ let mut cfg = cmake::Config::new(builder.src.join("src/llvm-project/lld"));
+ configure_cmake(builder, target, &mut cfg, true);
+
+- // This is an awful, awful hack. Discovered when we migrated to using
+- // clang-cl to compile LLVM/LLD it turns out that LLD, when built out of
+- // tree, will execute `llvm-config --cmakedir` and then tell CMake about
+- // that directory for later processing. Unfortunately if this path has
+- // forward slashes in it (which it basically always does on Windows)
+- // then CMake will hit a syntax error later on as... something isn't
+- // escaped it seems?
+- //
+- // Instead of attempting to fix this problem in upstream CMake and/or
+- // LLVM/LLD we just hack around it here. This thin wrapper will take the
+- // output from llvm-config and replace all instances of `\` with `/` to
+- // ensure we don't hit the same bugs with escaping. It means that you
+- // can't build on a system where your paths require `\` on Windows, but
+- // there's probably a lot of reasons you can't do that other than this.
+- let llvm_config_shim = env::current_exe().unwrap().with_file_name("llvm-config-wrapper");
+ cfg.out_dir(&out_dir)
+ .profile("Release")
+- .env("LLVM_CONFIG_REAL", llvm_config)
+- .define("LLVM_CONFIG_PATH", llvm_config_shim)
++ .define("LLVM_CONFIG_PATH", llvm_config)
+ .define("LLVM_INCLUDE_TESTS", "OFF");
+
+ cfg.build();
Added: head/lang/rust/files/patch-src_bootstrap_native.rs
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lang/rust/files/patch-src_bootstrap_native.rs Sun Mar 1 11:09:44 2020 (r527545)
@@ -0,0 +1,36 @@
+There seems to be some kind of race when using llvm-config-wrapper
+for building rust-lld. Attempt to improve reliability of the build
+by not using it. llvm-config-wrapper is a hack in the first place
+that is only really needed on Windows.
+
+--- src/bootstrap/native.rs.orig 2020-03-01 09:54:42 UTC
++++ src/bootstrap/native.rs
+@@ -472,27 +472,9 @@ impl Step for Lld {
+ let mut cfg = cmake::Config::new(builder.src.join("src/llvm-project/lld"));
+ configure_cmake(builder, target, &mut cfg);
+
+- // This is an awful, awful hack. Discovered when we migrated to using
+- // clang-cl to compile LLVM/LLD it turns out that LLD, when built out of
+- // tree, will execute `llvm-config --cmakedir` and then tell CMake about
+- // that directory for later processing. Unfortunately if this path has
+- // forward slashes in it (which it basically always does on Windows)
+- // then CMake will hit a syntax error later on as... something isn't
+- // escaped it seems?
+- //
+- // Instead of attempting to fix this problem in upstream CMake and/or
+- // LLVM/LLD we just hack around it here. This thin wrapper will take the
+- // output from llvm-config and replace all instances of `\` with `/` to
+- // ensure we don't hit the same bugs with escaping. It means that you
+- // can't build on a system where your paths require `\` on Windows, but
+- // there's probably a lot of reasons you can't do that other than this.
+- let llvm_config_shim = env::current_exe()
+- .unwrap()
+- .with_file_name("llvm-config-wrapper");
+ cfg.out_dir(&out_dir)
+ .profile("Release")
+- .env("LLVM_CONFIG_REAL", llvm_config)
+- .define("LLVM_CONFIG_PATH", llvm_config_shim)
++ .define("LLVM_CONFIG_PATH", llvm_config)
+ .define("LLVM_INCLUDE_TESTS", "OFF");
+
+ cfg.build();
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