Unable to cross compile on linux for macos (28.x branch) #31027

Is there an existing issue for this?

• I have searched the existing issues

Current behaviour

Running the command make HOST=x86_64-apple-darwin -C depends on Bitcoin Core 28.x no longer compiles the dependencies as expected. It fails.

Expected behaviour

The command make HOST=x86_64-apple-darwin -C depends should successfully compile all required dependencies without errors, as it did in previous versions of Bitcoin Core.

Steps to reproduce

make HOST=x86_64-apple-darwin -C depends -j32

Relevant log output

root@localhost:~/.build/bitcoin-untouched# make HOST=x86_64-apple-darwin -C depends -j32
make: Entering directory '/root/.build/bitcoin-untouched/depends'
Fetching boost_1_81_0.tar.gz from https://archives.boost.io/release/1.81.0/source/
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  133M  100  133M    0     0  1221k      0  0:01:52  0:01:52 --:--:-- 1183k
/root/.build/bitcoin-untouched/depends/work/download/boost-1.81.0/boost_1_81_0.tar.gz.temp: OK
Extracting boost...
/root/.build/bitcoin-untouched/depends/sources/boost_1_81_0.tar.gz: OK
Preprocessing boost...
Configuring boost...
Building boost...
Staging boost...
Postprocessing boost...
Caching boost...
Fetching libevent-2.1.12-stable.tar.gz from https://github.com/libevent/libevent/releases/download/release-2.1.12-stable/
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 1075k  100 1075k    0     0   389k      0  0:00:02  0:00:02 --:--:--  885k
/root/.build/bitcoin-untouched/depends/work/download/libevent-2.1.12-stable/libevent-2.1.12-stable.tar.gz.temp: OK
Extracting libevent...
/root/.build/bitcoin-untouched/depends/sources/libevent-2.1.12-stable.tar.gz: OK
Preprocessing libevent...
patching file CMakeLists.txt
patching file cmake/AddEventLibrary.cmake
patching file CMakeLists.txt
Configuring libevent...
-- The C compiler identification is Clang 14.0.6
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /usr/bin/clang
-- Check for working C compiler: /usr/bin/clang - broken
CMake Error at /usr/share/cmake-3.25/Modules/CMakeTestCCompiler.cmake:70 (message):
  The C compiler

    "/usr/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeScratch/TryCompile-Y3lnvg

    Run Build Command(s):/usr/bin/gmake -f Makefile cmTC_bccc1/fast && gmake[1]: Entering directory '/root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeScratch/TryCompile-Y3lnvg'
    /usr/bin/gmake  -f CMakeFiles/cmTC_bccc1.dir/build.make CMakeFiles/cmTC_bccc1.dir/build
    gmake[2]: Entering directory '/root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeScratch/TryCompile-Y3lnvg'
    Building C object CMakeFiles/cmTC_bccc1.dir/testCCompiler.c.o
    /usr/bin/clang  --target=x86_64-apple-darwin -isysroot/root/.build/bitcoin-untouched/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks --target=x86_64-apple-darwin   -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -I/root/.build/bitcoin-untouched/depends/x86_64-apple-darwin/include -D_GNU_SOURCE -D_FORTIFY_SOURCE=3  -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -fPIE -MD -MT CMakeFiles/cmTC_bccc1.dir/testCCompiler.c.o -MF CMakeFiles/cmTC_bccc1.dir/testCCompiler.c.o.d -o CMakeFiles/cmTC_bccc1.dir/testCCompiler.c.o -c /root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeScratch/TryCompile-Y3lnvg/testCCompiler.c
    Linking C executable cmTC_bccc1
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bccc1.dir/link.txt --verbose=1
    /usr/bin/clang  --target=x86_64-apple-darwin -isysroot/root/.build/bitcoin-untouched/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks --target=x86_64-apple-darwin -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -I/root/.build/bitcoin-untouched/depends/x86_64-apple-darwin/include -D_GNU_SOURCE -D_FORTIFY_SOURCE=3  -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -Wl,-headerpad_max_install_names -L/usr/local/python-3.12.6/lib -L/usr/local/node-v22.9.0/lib -L/usr/local/python-3.12.6/lib -L/usr/local/node-v22.9.0/lib  -L/root/.build/bitcoin-untouched/depends/x86_64-apple-darwin/lib  CMakeFiles/cmTC_bccc1.dir/testCCompiler.c.o -o cmTC_bccc1
    clang: warning: argument unused during compilation: '-nostdlibinc' [-Wunused-command-line-argument]
    /usr/bin/ld: unrecognised emulation mode: acosx_version_min
    Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386pep i386pe
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    gmake[2]: *** [CMakeFiles/cmTC_bccc1.dir/build.make:100: cmTC_bccc1] Error 1
    gmake[2]: Leaving directory '/root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeScratch/TryCompile-Y3lnvg'
    gmake[1]: *** [Makefile:127: cmTC_bccc1/fast] Error 2
    gmake[1]: Leaving directory '/root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeScratch/TryCompile-Y3lnvg'





  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:47 (project)


-- Configuring incomplete, errors occurred!
See also "/root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeOutput.log".
See also "/root/.build/bitcoin-untouched/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-66fa9a79555/build/CMakeFiles/CMakeError.log".
make: *** [funcs.mk:302: /root/.build/bitcoin-untouched/depends/x86_64-apple-darwin/.libevent_stamp_configured] Error 1
make: Leaving directory '/root/.build/bitcoin-untouched/depends'

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

28.x

Operating system and version

Debian 12.7.0

Machine specifications

No response

@JayBitron

Can you reproduce the issue in a fresh Docker container?

Do yo have macOS SDK available (see: https://github.com/bitcoin/bitcoin/tree/master/contrib/macdeploy).

@hebasto Yes, it's a fresh new intstalled linux, I don't use docker, I've been compiling bitcoin for macos since version 25.x had no problem, yes, I've the macos SDK

@JayBitron

-- The C compiler identification is Clang 14.0.6

Please ensure the minimum required Clang version, which is 16.0 for v28.0.

Additionally, you may need the lld package installed (the same version as llvm/clang).

@hebasto Altho the stable version of debian provides the clang 14, I have done also the clang 16 and even upper version, they throw different errors

@hebasto lld is installed

root@localhost:~/.build/bitcoin-macos# make HOST=x86_64-apple-darwin -C depends -j32
make: Entering directory '/root/.build/bitcoin-macos/depends'
Configuring libevent...
-- The C compiler identification is Clang 20.0.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /usr/bin/clang
-- Check for working C compiler: /usr/bin/clang - broken
CMake Error at /usr/share/cmake-3.30/Modules/CMakeTestCCompiler.cmake:67 (message):
  The C compiler

    "/usr/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: '/root/.build/bitcoin-macos/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-7c8a3b34ae1/build/CMakeFiles/CMakeScratch/TryCompile-ynpflf'

    Run Build Command(s): /usr/bin/cmake -E env VERBOSE=1 /usr/bin/gmake -f Makefile cmTC_8a4e1/fast
    gmake[1]: Entering directory '/root/.build/bitcoin-macos/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-7c8a3b34ae1/build/CMakeFiles/CMakeScratch/TryCompile-ynpflf'
    /usr/bin/gmake  -f CMakeFiles/cmTC_8a4e1.dir/build.make CMakeFiles/cmTC_8a4e1.dir/build
    gmake[2]: Entering directory '/root/.build/bitcoin-macos/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-7c8a3b34ae1/build/CMakeFiles/CMakeScratch/TryCompile-ynpflf'
    Building C object CMakeFiles/cmTC_8a4e1.dir/testCCompiler.c.o
    /usr/bin/clang  --target=x86_64-apple-darwin -isysroot/root/.build/bitcoin-macos/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks --target=x86_64-apple-darwin   -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -I/root/.build/bitcoin-macos/depends/x86_64-apple-darwin/include -D_GNU_SOURCE -D_FORTIFY_SOURCE=3  -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -fPIE -MD -MT CMakeFiles/cmTC_8a4e1.dir/testCCompiler.c.o -MF CMakeFiles/cmTC_8a4e1.dir/testCCompiler.c.o.d -o CMakeFiles/cmTC_8a4e1.dir/testCCompiler.c.o -c /root/.build/bitcoin-macos/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-7c8a3b34ae1/build/CMakeFiles/CMakeScratch/TryCompile-ynpflf/testCCompiler.c
    Linking C executable cmTC_8a4e1
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_8a4e1.dir/link.txt --verbose=1
    /usr/bin/clang  --target=x86_64-apple-darwin -isysroot/root/.build/bitcoin-macos/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks --target=x86_64-apple-darwin -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -I/root/.build/bitcoin-macos/depends/x86_64-apple-darwin/include -D_GNU_SOURCE -D_FORTIFY_SOURCE=3  -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -Wl,-headerpad_max_install_names -L/usr/local/python-3.12.6/lib -L/usr/local/node-v22.9.0/lib -L/usr/local/python-3.12.6/lib -L/usr/local/node-v22.9.0/lib  -L/root/.build/bitcoin-macos/depends/x86_64-apple-darwin/lib  CMakeFiles/cmTC_8a4e1.dir/testCCompiler.c.o -o cmTC_8a4e1
    /usr/bin/ld: unrecognised emulation mode: llvm
    Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386pep i386pe
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    gmake[2]: *** [CMakeFiles/cmTC_8a4e1.dir/build.make:100: cmTC_8a4e1] Error 1
    gmake[2]: Leaving directory '/root/.build/bitcoin-macos/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-7c8a3b34ae1/build/CMakeFiles/CMakeScratch/TryCompile-ynpflf'
    gmake[1]: *** [Makefile:127: cmTC_8a4e1/fast] Error 2
    gmake[1]: Leaving directory '/root/.build/bitcoin-macos/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-7c8a3b34ae1/build/CMakeFiles/CMakeScratch/TryCompile-ynpflf'





  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:47 (project)


-- Configuring incomplete, errors occurred!
make: *** [funcs.mk:302: /root/.build/bitcoin-macos/depends/x86_64-apple-darwin/.libevent_stamp_configured] Error 1
make: Leaving directory '/root/.build/bitcoin-macos/depends'

Here are the steps to build depends without Qt on Debian 12:

apt update
apt install git bison cmake curl make pkg-config xz-utils wget
# Install minimum required version of LLVM toolchain
apt install clang-16 llvm-16 lld-16
# Create non-versioned symlinks of the tools
ln -s /usr/bin/clang-16 /usr/bin/clang
ln -s /usr/bin/clang++-16 /usr/bin/clang++
ln -s /usr/bin/lld-16 /usr/bin/lld
ln -s /usr/bin/ld.lld-16 /usr/bin/ld.lld
ln -s /usr/bin/lld-link-16 /usr/bin/lld-link
ln -s /usr/bin/llvm-ar-16 /usr/bin/llvm-ar
ln -s /usr/bin/llvm-ranlib-16 /usr/bin/llvm-ranlib
# Prepare Bitcoin Core repository
git clone https://github.com/bitcoin/bitcoin.git
wget https://raw.githubusercontent.com/hebasto/artefacts/refs/heads/Xcode/Xcode/Xcode-15.0/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers.tar.gz
mkdir -p bitcoin/depends/SDKs
tar xf Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers.tar.gz -C bitcoin/depends/SDKs
cd bitcoin
git checkout v28.0
# Cross-compile non-GUI dependencies
make -j 16 -C depends HOST=x86_64-apple-darwin NO_QT=1

Please note that building the qt package requires g++ and a newer clang.

I'm using version 20 it returns /usr/bin/ld: unrecognised emulation mode: llvm when I create symbolic links to version 16 it returns /usr/bin/ld: unrecognised emulation mode: acosx_version_min It's is different error on each version

debian unstable (sid) runs on clang-20 doesn't need to downgrade it

I just freshly installed a linux and went the steps as you said still getting this error:

root@localhost:~/.build/bitcoin# make -C depends HOST=x86_64-apple-darwin -j32
make: Entering directory '/root/.build/bitcoin/depends'
Fetching boost_1_81_0.tar.gz from https://archives.boost.io/release/1.81.0/source/
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  133M  100  133M    0     0  1252k      0  0:01:49  0:01:49 --:--:-- 1241k
/root/.build/bitcoin/depends/work/download/boost-1.81.0/boost_1_81_0.tar.gz.temp: OK
Extracting boost...
/root/.build/bitcoin/depends/sources/boost_1_81_0.tar.gz: OK
Preprocessing boost...
Configuring boost...
Building boost...
Staging boost...
Postprocessing boost...
Caching boost...
Fetching libevent-2.1.12-stable.tar.gz from https://github.com/libevent/libevent/releases/download/release-2.1.12-stable/
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 1075k  100 1075k    0     0   275k      0  0:00:03  0:00:03 --:--:--  372k
/root/.build/bitcoin/depends/work/download/libevent-2.1.12-stable/libevent-2.1.12-stable.tar.gz.temp: OK
Extracting libevent...
/root/.build/bitcoin/depends/sources/libevent-2.1.12-stable.tar.gz: OK
Preprocessing libevent...
patching file CMakeLists.txt
patching file cmake/AddEventLibrary.cmake
patching file CMakeLists.txt
Configuring libevent...
-- The C compiler identification is Clang 16.0.6
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /usr/bin/clang
-- Check for working C compiler: /usr/bin/clang - broken
CMake Error at /usr/share/cmake-3.25/Modules/CMakeTestCCompiler.cmake:70 (message):
  The C compiler

    "/usr/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeScratch/TryCompile-RUU5h5

    Run Build Command(s):/usr/bin/gmake -f Makefile cmTC_920c1/fast && gmake[1]: Entering directory '/root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeScratch/TryCompile-RUU5h5'
    /usr/bin/gmake  -f CMakeFiles/cmTC_920c1.dir/build.make CMakeFiles/cmTC_920c1.dir/build
    gmake[2]: Entering directory '/root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeScratch/TryCompile-RUU5h5'
    Building C object CMakeFiles/cmTC_920c1.dir/testCCompiler.c.o
    /usr/bin/clang  --target=x86_64-apple-darwin -isysroot/root/.build/bitcoin/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks --target=x86_64-apple-darwin   -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -I/root/.build/bitcoin/depends/x86_64-apple-darwin/include -D_GNU_SOURCE -D_FORTIFY_SOURCE=3  -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -fPIE -MD -MT CMakeFiles/cmTC_920c1.dir/testCCompiler.c.o -MF CMakeFiles/cmTC_920c1.dir/testCCompiler.c.o.d -o CMakeFiles/cmTC_920c1.dir/testCCompiler.c.o -c /root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeScratch/TryCompile-RUU5h5/testCCompiler.c
    Linking C executable cmTC_920c1
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_920c1.dir/link.txt --verbose=1
    /usr/bin/clang  --target=x86_64-apple-darwin -isysroot/root/.build/bitcoin/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks --target=x86_64-apple-darwin -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -I/root/.build/bitcoin/depends/x86_64-apple-darwin/include -D_GNU_SOURCE -D_FORTIFY_SOURCE=3  -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include -I/usr/local/python-3.12.6/include -I/usr/local/node-v22.9.0/include  -Wl,-headerpad_max_install_names -L/usr/local/python-3.12.6/lib -L/usr/local/node-v22.9.0/lib -L/usr/local/python-3.12.6/lib -L/usr/local/node-v22.9.0/lib  -L/root/.build/bitcoin/depends/x86_64-apple-darwin/lib  CMakeFiles/cmTC_920c1.dir/testCCompiler.c.o -o cmTC_920c1
    clang: warning: argument unused during compilation: '-nostdlibinc' [-Wunused-command-line-argument]
    /usr/bin/ld: unrecognised emulation mode: acosx_version_min
    Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386pep i386pe
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    gmake[2]: *** [CMakeFiles/cmTC_920c1.dir/build.make:100: cmTC_920c1] Error 1
    gmake[2]: Leaving directory '/root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeScratch/TryCompile-RUU5h5'
    gmake[1]: *** [Makefile:127: cmTC_920c1/fast] Error 2
    gmake[1]: Leaving directory '/root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeScratch/TryCompile-RUU5h5'





  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:47 (project)


-- Configuring incomplete, errors occurred!
See also "/root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeOutput.log".
See also "/root/.build/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-048265ffc6b/build/CMakeFiles/CMakeError.log".
make: *** [funcs.mk:302: /root/.build/bitcoin/depends/x86_64-apple-darwin/.libevent_stamp_configured] Error 1
make: Leaving directory '/root/.build/bitcoin/depends'

I know now bitcoin 28.x macos builds are broken officially, in 27.x all tools were built in, about 800MB down was taken down.

Yes, I see native_llvm.mk was removed from 28.x

debian unstable (sid) runs on clang-20 doesn't need to downgrade it

Debian Sid's default clang is clang-16, which is enough to build every dependency except for the qt package.

Here is a full log of the commands on a fresh Debian Sid image:

# history 
    1  apt update
    2  apt install git bison cmake curl make pkg-config xz-utils wget
    3  apt install clang llvm lld
    4  git clone https://github.com/bitcoin/bitcoin.git
    5  wget https://raw.githubusercontent.com/hebasto/artefacts/refs/heads/Xcode/Xcode/Xcode-15.0/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers.tar.gz
    6  mkdir -p bitcoin/depends/SDKs
    7  tar xf Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers.tar.gz -C bitcoin/depends/SDKs
    8  cd bitcoin
    9  git checkout v28.0
   10  make -j 16 -C depends HOST=x86_64-apple-darwin NO_QT=1
   11  history 

Please ensure that your environment, including compiler-specific variables, is not modified somehow.

@hebasto can you try compiling yourself, including the qt wallet

I'm getting the same error but inside a guix build: https://gist.github.com/pinheadmz/a2603f7f62c7627f33a10d8f39443f20

Update: re-downloaded Xcode and re-extracted the SDK, guix build is proceeding again

Update: re-downloaded Xcode and re-extracted the SDK, guix build is proceeding again

Did it work after re-extracting the SDK? I had no luck with 28.1. Trying 27.2 now.

Update. Ends with:

checking for x86_64-apple-darwin-gcc... env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH -u LIBRARY_PATH /home/tim/.guix-profile/bin/clang --target=x86_64-apple-darwin -B/bitcoin/depends/x86_64-apple-darwin/native/bin -isysroot/bitcoin/depends/SDKs/Xcode-15.0-15A240d-extracted-SDK-with-libcxx-headers -nostdlibinc -iwithsysroot/usr/include -iframeworkwithsysroot/System/Library/Frameworks
checking whether the C compiler works... no
configure: error: in `/bitcoin/depends/work/build/x86_64-apple-darwin/libevent/2.1.12-stable-68e7f8db9ca':
configure: error: C compiler cannot create executables
See `config.log' for more details
make: *** [funcs.mk:291: /bitcoin/depends/x86_64-apple-darwin/.libevent_stamp_configured] Error 77
make: Leaving directory '/bitcoin/depends'

Seems to compile boost though.