I have the experience of building the toolchain on macOS successfully.
But recently I want to build a Linux toolchain to debug the swift_newtype issue on Linux.
Following the instruction on GettingStarted.md with both release/5.9 and release/5.10 gives the same error message.
# Build Command
utils/build-script --release-debuginfo --skip-early-swift-driver \
--skip-early-swiftsyntax --sccache
FAILED: SwiftCompilerSources/CMakeFiles/importedHeaderDependencies.dir/HeaderDependencies.cpp.o
/usr/local/bin/sccache /usr/bin/clang++ -DCMARK_STATIC_DEFINE -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_LIBCPP_ENABLE_ASSERTIONS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/swift-linux-aarch64/SwiftCompilerSources -I/Users/kyle/Developer/SwiftProject/swift/SwiftCompilerSources -I/Users/kyle/Developer/SwiftProject/swift/stdlib/public/SwiftShims -I/Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/swift-linux-aarch64/include -I/Users/kyle/Developer/SwiftProject/swift/include -I/Users/kyle/Developer/SwiftProject/llvm-project/llvm/include -I/Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/llvm-linux-aarch64/include -I/Users/kyle/Developer/SwiftProject/llvm-project/clang/include -I/Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/llvm-linux-aarch64/tools/clang/include -I/Users/kyle/Developer/SwiftProject/cmark/src/include -I/Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/cmark-linux-aarch64/src -I/Users/kyle/Developer/SwiftProject/swift-corelibs-libdispatch/src/BlocksRuntime -I/Users/kyle/Developer/SwiftProject/swift-corelibs-libdispatch -I/Users/kyle/Developer/SwiftProject/swift/SwiftCompilerSources/../include/swift -Wno-unknown-warning-option -Werror=unguarded-availability-new -fno-stack-protector -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -Wimplicit-fallthrough -Wcovered-switch-default -Wno-class-memaccess -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -Werror=switch -Wdocumentation -Wimplicit-fallthrough -Wunreachable-code -Woverloaded-virtual -DOBJC_OLD_DISPATCH_PROTOTYPES=0 -O2 -DNDEBUG -Werror=gnu -Werror=c++98-compat-extra-semi -UNDEBUG -std=c++17 -MD -MT SwiftCompilerSources/CMakeFiles/importedHeaderDependencies.dir/HeaderDependencies.cpp.o -MF SwiftCompilerSources/CMakeFiles/importedHeaderDependencies.dir/HeaderDependencies.cpp.o.d -o SwiftCompilerSources/CMakeFiles/importedHeaderDependencies.dir/HeaderDependencies.cpp.o -c /Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/swift-linux-aarch64/SwiftCompilerSources/HeaderDependencies.cpp
In file included from /Users/kyle/Developer/SwiftProject/build/Ninja-RelWithDebInfoAssert/swift-linux-aarch64/SwiftCompilerSources/HeaderDependencies.cpp:3:
In file included from /Users/kyle/Developer/SwiftProject/swift/SwiftCompilerSources/../include/swift/Basic/BasicBridging.h:19:
In file included from /Users/kyle/Developer/SwiftProject/llvm-project/llvm/include/llvm/CAS/CASReference.h:12:
In file included from /Users/kyle/Developer/SwiftProject/llvm-project/llvm/include/llvm/ADT/ArrayRef.h:12:
In file included from /Users/kyle/Developer/SwiftProject/llvm-project/llvm/include/llvm/ADT/Hashing.h:53:
In file included from /usr/bin/../lib/gcc/aarch64-linux-gnu/11/../../../../include/c++/11/cstring:42:
In file included from /usr/include/string.h:462:
In file included from /Users/kyle/Developer/SwiftProject/swift/SwiftCompilerSources/../include/swift/strings.h:16:
In file included from /Users/kyle/Developer/SwiftProject/swift/include/swift/Basic/LLVM.h:24:
In file included from /Users/kyle/Developer/SwiftProject/llvm-project/llvm/include/llvm/Support/Casting.h:17:
In file included from /Users/kyle/Developer/SwiftProject/llvm-project/llvm/include/llvm/ADT/Optional.h:20:
In file included from /Users/kyle/Developer/SwiftProject/llvm-project/llvm/include/llvm/ADT/None.h:19:
/usr/bin/../lib/gcc/aarch64-linux-gnu/11/../../../../include/c++/11/optional:64:3: error: templates must have C++ linkage
template<typename _Tp>
^~~~~~~~~~~~~~~~~~~~~~
/usr/include/string.h:28:1: note: extern "C" language linkage specification begins here
__BEGIN_DECLS
^
/usr/include/aarch64-linux-gnu/sys/cdefs.h:133:24: note: expanded from macro '__BEGIN_DECLS'
# define __BEGIN_DECLS extern "C" {
^
It looks to be a search path conflict issue to me. When encountering #include <string.hs> in /usr/include/string.h - Line 462 on my host Linux machine, it is wrongly parsed as ${PROJECT_ROOT}/swift/SwiftCompilerSources/../include/swift/strings.h instead of the correct one - /usr/include/strings.h.
...
#ifdef __USE_MISC
# include <strings.h>
...
How can I fix the issue here? Is it related with the param I pass to utils/build-script script? Any guidance would be appreciated.
# Env
Linux ubuntu-2204 6.5.13-orbstack-00122-g57b8027e2387 #1 SMP Tue Feb 6 07:48:26 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux
# Swift Project Version
branch: release/5.10
commit: 17ca88c94a34b34c3c354891e899e82ce98f46ee