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[SR-15203] Building Swift toolchain on Windows fails with "no libxml2" #57525

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swift-ci opened this issue Sep 16, 2021 · 6 comments
Closed

[SR-15203] Building Swift toolchain on Windows fails with "no libxml2" #57525

swift-ci opened this issue Sep 16, 2021 · 6 comments
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@shahmishal
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. build Windows Platform: Windows

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@swift-ci
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Previous ID SR-15203
Radar None
Original Reporter Stefan Springer (JIRA User)
Type Bug
Status Closed
Resolution Invalid

Attachment: Download

Environment

Windows Home 64 Bit running in a Parallels VM, using sources checkout-out with tag "5.4.3-RELEASE".

Additional Detail from JIRA
Votes 0
Component/s Project Infrastructure
Labels Bug, Windows, build
Assignee @shahmishal
Priority Medium

md5: 384aed368c84597fa826fac5e2b93688

Issue Description:

UPDATE: Issue resolved see my comment "RESOLVED: ..." from Sep. 18, 2021. (The instructions on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md should be improved accordingly.)

UPDATE 2: No, I had to change from VS 2022 to VS 2019 because of a "expected Clang 12.0.0 or newer" error, and there it is again, the old "no libxml2" error despite of correct copying of the files. Note: I had to use MSVC\14.29.30133, because using Windows10SDK.17763 what only work without "Universal Windows App Development", as on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md is listed as necessary. But maybe I just remove "Universal Windows App Development" and try again with Windows10SDK.17763.

When trying to build the Swift toolchain, the test for Clang ends with an "no libxml2" error:

[4149/6194] Performing configure step for 'libdispatch'
FAILED: tools/swift/libdispatch-prefix/src/libdispatch-stamp/libdispatch-configure
cmd.exe /C "cd /D S:\build\5.4.3-RELEASE\tools\swift\libdispatch-prefix\src\libdispatch-build && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" "-DCMAKE_AR=C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/lib.exe" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=S:/build/5.4.3-RELEASE/bin/clang-cl.exe "-DCMAKE_C_FLAGS=/bigobj /Zc:inline /Zc:strictStrings /Oi /W4 -wd4141 -wd4146 -wd4244 -wd4267 -wd4291 -wd4351 -wd4456 -wd4457 -wd4458 -wd4459 -wd4503 -wd4624 -wd4722 -wd4100 -wd4127 -wd4512 -wd4505 -wd4610 -wd4510 -wd4702 -wd4245 -wd4706 -wd4310 -wd4701 -wd4703 -wd4389 -wd4611 -wd4805 -wd4204 -wd4577 -wd4091 -wd4592 -wd4319 -wd4709 -wd4324 -w14062 -we4238" -DCMAKE_CXX_COMPILER=S:/build/5.4.3-RELEASE/bin/clang-cl.exe "-DCMAKE_CXX_FLAGS=/bigobj /Zc:inline /Zc:strictStrings /Oi /Zc:rvalueCast /W4 -wd4141 -wd4146 -wd4244 -wd4267 -wd4291 -wd4351 -wd4456 -wd4457 -wd4458 -wd4459 -wd4503 -wd4624 -wd4722 -wd4100 -wd4127 -wd4512 -wd4505 -wd4610 -wd4510 -wd4702 -wd4245 -wd4706 -wd4310 -wd4701 -wd4703 -wd4389 -wd4611 -wd4805 -wd4204 -wd4577 -wd4091 -wd4592 -wd4319 -wd4709 -wd4324 -w14062 -we4238 /we4062 /wd4068 /permissive- -DOBJC_OLD_DISPATCH_PROTOTYPES=0" -DCMAKE_MAKE_PROGRAM=C:/PROGRA~2/MICROS~2/2019/COMMUN~1/Common7/IDE/COMMON~1/MICROS~1/CMake/Ninja/ninja.exe -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX=S:/build/5.4.3-RELEASE/tools/swift/libdispatch-prefix "-DCMAKE_LINKER=C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/link.exe" -DCMAKE_RANLIB=: -DCMAKE_TOOLCHAIN_FILE= -DBUILD_SHARED_LIBS=YES -DENABLE_SWIFT=NO -DENABLE_TESTING=NO -GNinja S:\swift-corelibs-libdispatch && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E touch S:/build/5.4.3-RELEASE/tools/swift/libdispatch-prefix/src/libdispatch-stamp/libdispatch-configure"
-- The C compiler identification is Clang 11.1.0 with MSVC-like command-line
-- The CXX compiler identification is Clang 11.1.0 with MSVC-like command-line
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: S:/build/5.4.3-RELEASE/bin/clang-cl.exe
-- Check for working C compiler: S:/build/5.4.3-RELEASE/bin/clang-cl.exe - broken
CMake Error at C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/CMake/share/cmake-3.20/Modules/CMakeTestCCompiler.cmake:66 (message):
  The C compiler

    "S:/build/5.4.3-RELEASE/bin/clang-cl.exe"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: S:/build/5.4.3-RELEASE/tools/swift/libdispatch-prefix/src/libdispatch-build/CMakeFiles/CMakeTmp

    Run Build Command(s):C:/PROGRA~2/MICROS~2/2019/COMMUN~1/Common7/IDE/COMMON~1/MICROS~1/CMake/Ninja/ninja.exe cmTC_3b729 && [1/2] Building C object CMakeFiles\cmTC_3b729.dir\testCCompiler.c.obj
    [2/2] Linking C executable cmTC_3b729.exe
    FAILED: cmTC_3b729.exe
    cmd.exe /C "cd . && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E vs_link_exe --intdir=CMakeFiles\cmTC_3b729.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100190~1.0\x64\rc.exe --mt=C:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr\bin\llvm-mt.exe --manifests  -- C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1429~1.301\bin\Hostx64\x64\link.exe /nologo CMakeFiles\cmTC_3b729.dir\testCCompiler.c.obj  /out:cmTC_3b729.exe /implib:cmTC_3b729.lib /pdb:cmTC_3b729.pdb /version:0.0 /machine:x64  /debug /INCREMENTAL /subsystem:console  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && cd ."
    MT: command "C:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr\bin\llvm-mt.exe /nologo /manifest CMakeFiles\cmTC_3b729.dir/intermediate.manifest /out:CMakeFiles\cmTC_3b729.dir/embed.manifest /notify_update" failed (exit code 0x1) with the following output:
    llvm-mt: error: no libxml2
    llvm-mt: ignoring unsupported 'notify_update' option
    ninja: build stopped: subcommand failed.

I am using libxml2 from https://github.com/stefanspringer1/Libxml2Validation.git (which is quite a current compilation, from this year), checked-out to `S:\Library\Libxml2Validation`, and `S:\Library\Libxml2Validation\Binaries\Windows.Intel` containing `libxml2.lib` and the DLLs added to the PATH environment variable, my command for building the whole toolchain is:

cmake -B "S:\build\5.4.3-RELEASE" ^
  -C S:\swift\cmake\caches\Windows-x86_64.cmake ^
  -D CMAKE_BUILD_TYPE=Debug ^
  -D CMAKE_INSTALL_PREFIX=C:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr ^
  -D LLVM_DEFAULT_TARGET_TRIPLE=x86_64-unknown-windows-msvc ^
  -D LLVM_ENABLE_PDB=YES ^
  -D LLVM_EXTERNAL_CMARK_SOURCE_DIR=S:\cmark ^
  -D LLVM_EXTERNAL_SWIFT_SOURCE_DIR=S:\swift ^
  -D CMAKE_C_FLAGS="/bigobj" ^
  -D CMAKE_CXX_FLAGS="/bigobj" ^
  -D LLVM_PARALLEL_LINK_JOBS=1 ^
  -D DLLVM_PARALLEL_LINK_JOBS=1 ^
  -D SWIFT_PATH_TO_LIBDISPATCH_SOURCE=S:\swift-corelibs-libdispatch ^
  -D SWIFT_WINDOWS_x86_64_ICU_I18N_INCLUDE=S:\Library\icu-67\usr\include ^
  -D SWIFT_WINDOWS_x86_64_ICU_I18N=S:\Library\icu-67\usr\lib\icuin67.lib ^
  -D SWIFT_WINDOWS_x86_64_ICU_UC_INCLUDE=S:\Library\icu-67\usr\include ^
  -D SWIFT_WINDOWS_x86_64_ICU_UC=S:\Library\icu-67\usr\lib\icuuc67.lib ^
  -D LIBXML2_LIBRARY=C:\Users\stefan\Projects\Swift\Library\Libxml2Validation\Binaries\Windows.Intel\libxml2.lib ^
  -D LIBXML2_INCLUDE_DIR=C:\Users\stefan\Projects\Swift\Library\Libxml2Validation\header-files ^
  -G Ninja ^
  -S S:\llvm-project\llvm

ninja -C S:\build\5.4.3-RELEASE

With `-D LIBXML2_LIBRARY` and `-D LIBXML2_INCLUDE_DIR` and the addition to PATH I could resolve another "no libxml2" error at an earlier step, I got `-D LIBXML2_LIBRARY` and `-D LIBXML2_INCLUDE_DIR` from https://github.com/apple/swift/blob/main/docs/WindowsBuild.md under "Build swift-corelibs-foundation", was was not sure about whether to also add the `-D LIBXML2_DEFINITIONS="/DLIBXML_STATIC"` (got one message about that something is not static when using it).

I am also not sure about how really use the stuff in `S:\Library`, if more should be added to PATH.

(On the good side: it is "[4149/6194]", so I have already come a long way, cf. https://forums.swift.org/t/swift-package-manager-spm-still-not-working-on-windows/51388/38, it would be nice if I get the building done, many thanks in advance.)
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Comment by Stefan Springer (JIRA)

I tried again with a configuration matching very close the one given on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md (also with CMAKE_BUILD_TYPE=Release this time):

cmake -B "S:\b\1" ^
  -C S:\swift\cmake\caches\Windows-x86_64.cmake ^
  -D CMAKE_BUILD_TYPE=Release ^
  -D CMAKE_INSTALL_PREFIX=C:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr ^
  -D LLVM_DEFAULT_TARGET_TRIPLE=x86_64-unknown-windows-msvc ^
  -D LLVM_ENABLE_PDB=YES ^
  -D LLVM_EXTERNAL_CMARK_SOURCE_DIR=S:\cmark ^
  -D LLVM_EXTERNAL_SWIFT_SOURCE_DIR=S:\swift ^
  -D CMAKE_C_FLAGS="/bigobj" ^
  -D CMAKE_CXX_FLAGS="/bigobj" ^
  -D LLVM_PARALLEL_LINK_JOBS=2 ^
  -D DLLVM_PARALLEL_LINK_JOBS=2 ^
  -D SWIFT_PATH_TO_LIBDISPATCH_SOURCE=S:\swift-corelibs-libdispatch ^
  -D SWIFT_WINDOWS_x86_64_ICU_I18N_INCLUDE=S:\Library\icu-67\usr\include ^
  -D SWIFT_WINDOWS_x86_64_ICU_I18N=S:\Library\icu-67\usr\lib\icuin67.lib ^
  -D SWIFT_WINDOWS_x86_64_ICU_UC_INCLUDE=S:\Library\icu-67\usr\include ^
  -D SWIFT_WINDOWS_x86_64_ICU_UC=S:\Library\icu-67\usr\lib\icuuc67.lib ^
  -G Ninja ^
  -S S:\llvm-project\llvm

The only difference to the configuration given on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md is the addition of the following lines:

  -D CMAKE_C_FLAGS="/bigobj" ^
  -D CMAKE_CXX_FLAGS="/bigobj" ^
  -D LLVM_PARALLEL_LINK_JOBS=2 ^
  -D DLLVM_PARALLEL_LINK_JOBS=2 ^

I also reduced the additions to the PATH environment variable to a minimum:

  • C:\Program Files\Git\cmd

  • C:\Program Files\Git\usr\bin

  • C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64

(So no paths to an existing Swift installation etc.) Further, Python files are associated with py.exe installed by pylauncher (https://bitbucket.org/vinay.sajip/pylauncher/downloads/). No further configuration besides the ones listed on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md.

The current error message (practically the same as the old one above):

FAILED: tools/swift/libdispatch-prefix/src/libdispatch-stamp/libdispatch-configure
cmd.exe /C "cd /D S:\b\1\tools\swift\libdispatch-prefix\src\libdispatch-build && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" "-DCMAKE_AR=C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/lib.exe" -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_COMPILER=S:/b/1/bin/clang-cl.exe "-DCMAKE_C_FLAGS=/bigobj /Zc:inline /Zi /Zc:strictStrings /Oi /W4 -wd4141 -wd4146 -wd4244 -wd4267 -wd4291 -wd4351 -wd4456 -wd4457 -wd4458 -wd4459 -wd4503 -wd4624 -wd4722 -wd4100 -wd4127 -wd4512 -wd4505 -wd4610 -wd4510 -wd4702 -wd4245 -wd4706 -wd4310 -wd4701 -wd4703 -wd4389 -wd4611 -wd4805 -wd4204 -wd4577 -wd4091 -wd4592 -wd4319 -wd4709 -wd4324 -w14062 -we4238 /Gw" -DCMAKE_CXX_COMPILER=S:/b/1/bin/clang-cl.exe "-DCMAKE_CXX_FLAGS=/bigobj /Zc:inline /Zi /Zc:strictStrings /Oi /Zc:rvalueCast /W4 -wd4141 -wd4146 -wd4244 -wd4267 -wd4291 -wd4351 -wd4456 -wd4457 -wd4458 -wd4459 -wd4503 -wd4624 -wd4722 -wd4100 -wd4127 -wd4512 -wd4505 -wd4610 -wd4510 -wd4702 -wd4245 -wd4706 -wd4310 -wd4701 -wd4703 -wd4389 -wd4611 -wd4805 -wd4204 -wd4577 -wd4091 -wd4592 -wd4319 -wd4709 -wd4324 -w14062 -we4238 /Gw /we4062 /wd4068 /permissive- -DOBJC_OLD_DISPATCH_PROTOTYPES=0" -DCMAKE_MAKE_PROGRAM=C:/PROGRA~2/MICROS~2/2019/COMMUN~1/Common7/IDE/COMMON~1/MICROS~1/CMake/Ninja/ninja.exe -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX=S:/b/1/tools/swift/libdispatch-prefix "-DCMAKE_LINKER=C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/link.exe" -DCMAKE_RANLIB=: -DCMAKE_TOOLCHAIN_FILE= -DBUILD_SHARED_LIBS=YES -DENABLE_SWIFT=NO -DENABLE_TESTING=NO -GNinja S:\swift-corelibs-libdispatch && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E touch S:/b/1/tools/swift/libdispatch-prefix/src/libdispatch-stamp/libdispatch-configure"
-- The C compiler identification is Clang 11.1.0 with MSVC-like command-line
-- The CXX compiler identification is Clang 11.1.0 with MSVC-like command-line
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: S:/b/1/bin/clang-cl.exe
-- Check for working C compiler: S:/b/1/bin/clang-cl.exe - broken
CMake Error at C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/CMake/share/cmake-3.20/Modules/CMakeTestCCompiler.cmake:66 (message):
  The C compiler

    "S:/b/1/bin/clang-cl.exe"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: S:/b/1/tools/swift/libdispatch-prefix/src/libdispatch-build/CMakeFiles/CMakeTmp

    Run Build Command(s):C:/PROGRA~2/MICROS~2/2019/COMMUN~1/Common7/IDE/COMMON~1/MICROS~1/CMake/Ninja/ninja.exe cmTC_93264 && [1/2] Building C object CMakeFiles\cmTC_93264.dir\testCCompiler.c.obj
    [2/2] Linking C executable cmTC_93264.exe
    FAILED: cmTC_93264.exe
   cmd.exe /C "cd . && "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E vs_link_exe --intdir=CMakeFiles\cmTC_93264.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100190~1.0\x64\rc.exe --mt=S:\b\1\bin\llvm-mt.exe --manifests  -- C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1429~1.301\bin\Hostx64\x64\link.exe /nologo CMakeFiles\cmTC_93264.dir\testCCompiler.c.obj  /out:cmTC_93264.exe /implib:cmTC_93264.lib /pdb:cmTC_93264.pdb /version:0.0 /machine:x64  /debug /INCREMENTAL /subsystem:console  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib && cd ."
    MT: command "S:\b\1\bin\llvm-mt.exe /nologo /manifest CMakeFiles\cmTC_93264.dir/intermediate.manifest /out:CMakeFiles\cmTC_93264.dir/embed.manifest /notify_update" failed (exit code 0x1) with the following output:
    llvm-mt: error: no libxml2
    llvm-mt: ignoring unsupported 'notify_update' option
    ninja: build stopped: subcommand failed.

UPDATE: Bringing back those three lines with LIBXML2_... on that basis does not help, still the same "no libxml2" error on [4196/6194]. I do not think I can variate much more. Please help. Thanks.

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Comment by Stefan Springer (JIRA)

See attached my log from the configuration step (last version). conf.log

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Comment by Stefan Springer (JIRA)

UPDATE: Without the following lines, the "no libxml2" error already comes earlier at "[10/1997]":

  -D LLVM_ENABLE_PDB=YES ^
  -D CMAKE_C_FLAGS="/bigobj" ^
  -D CMAKE_CXX_FLAGS="/bigobj" ^

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Comment by Stefan Springer (JIRA)

RESOLVED:

The commands listed under "One-time Setup (re-run on Visual Studio upgrades)" on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md did not work, because – of course – making a symbolic link does not work if at the path of the link file a file already exists, you need to delete it first. Unfortunately, it did not see the error message.

I now use the the following commands instead (not all deletions are actually needed, only two of them):

if exist "%UniversalCRTSdkDir%Include\%UCRTVersion%\ucrt\module.modulemap" del /Q "%UniversalCRTSdkDir%Include\%UCRTVersion%\ucrt\module.modulemap"
mklink "%UniversalCRTSdkDir%Include\%UCRTVersion%\ucrt\module.modulemap" S:\swift\stdlib\public\Platform\ucrt.modulemap
if exist "%UniversalCRTSdkDir%Include\%UCRTVersion%\um\module.modulemap" del /Q "%UniversalCRTSdkDir%Include\%UCRTVersion%\um\module.modulemap"
mklink "%UniversalCRTSdkDir%Include\%UCRTVersion%\um\module.modulemap" S:\swift\stdlib\public\Platform\winsdk.modulemap
if exist "%VCToolsInstallDir%include\module.modulemap" del /Q "%VCToolsInstallDir%include\module.modulemap"
mklink "%VCToolsInstallDir%include\module.modulemap" S:\swift\stdlib\public\Platform\visualc.modulemap
if exist "%VCToolsInstallDir%include\visualc.apinotes" del /Q "%VCToolsInstallDir%include\visualc.apinotes"
mklink "%VCToolsInstallDir%include\visualc.apinotes" S:\swift\stdlib\public\Platform\visualc.apinotes

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This seems like a setup issue, not an actual issue with the tooling.

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Comment by Stefan Springer (JIRA)

This seems like a setup issue, not an actual issue with the tooling.

On https://github.com/stefanspringer1/BuildingSwiftOnWindows.git, I documented the exact steps I have done on a fresh Windows installation, it is basically what https://github.com/apple/swift/blob/main/docs/WindowsBuild.md says but with some checks and correction, incorporating the problems I had and described on https://forums.swift.org/t/swift-package-manager-spm-still-not-working-on-windows/51388.

It might be a setup problem but that is exactly what all this is about: Trying to describe the steps that are necessary for the Swift toolchain to be built. The description on https://github.com/apple/swift/blob/main/docs/WindowsBuild.md is at least uncomplete. The configuration step says:

```text

    • Could NOT find Backtrace (missing: Backtrace_LIBRARY Backtrace_INCLUDE_DIR)

    • Could NOT find OCaml (missing: OCAMLFIND OCAML_VERSION OCAML_STDLIB_PATH)

    • Could NOT find LibEdit (missing: LibEdit_INCLUDE_DIRS LibEdit_LIBRARIES)

    • Could NOT find CursesAndPanel (missing: CURSES_INCLUDE_DIRS CURSES_LIBRARIES PANEL_LIBRARIES)

    • Could NOT find LibLZMA (missing: LIBLZMA_LIBRARY LIBLZMA_INCLUDE_DIR LIBLZMA_HAS_AUTO_DECODER LIBLZMA_HAS_EASY_ENCODER LIBLZMA_HAS_LZMA_PRESET)

    • Could NOT find Lua (missing: LUA_LIBRARIES LUA_INCLUDE_DIR) (Required is at least version "5.3")

    • Could NOT find LuaAndSwig (missing: LUA_LIBRARIES LUA_INCLUDE_DIR)

    • Could NOT find SWIG (missing: SWIG_DIR) (Required is at least version "2.0")

    • Could NOT find LibXml2 (missing: LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR) (Required is at least version "2.8")

    • Could NOT find Backtrace (missing: Backtrace_LIBRARY Backtrace_INCLUDE_DIR)

    • Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)

    • Could NOT find LibXml2 (missing: LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR)

    • Could NOT find LibEdit (missing: LibEdit_INCLUDE_DIRS LibEdit_LIBRARIES)
      ```

I am willing to see and try what works and maybe enhance the description or complete my description for the may less experts. I think it is a real problem if the description for building the Swift toolchain is not enough for the "average" person to really execute it, and just to close this bug is not a solution.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. build Windows Platform: Windows
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