Support building on MSYS2 with clang

I have the Scons package installed with mingw-w64-clang-x86_64-scons as I already have mingw-w64-clang-x86_64-toolchain.

But it seems the environment is not detected.

$ scons
scons: Reading SConscript files ...
     Compiler: gcc (gnu)
     Platform: win32
Compiler Mode: gnu
   Build Mode: release
         Arch: x86
FileNotFoundError: [WinError 2] The system cannot find the file specified:
  File "C:/Work/msys64/home/Administrator/cbang/SConstruct", line 85:
    conf.CBConfig('compiler')
  File "C:/Work/msys64/clang64/lib/python3.12/site-packages/SCons/SConf.py", line 741:
    ret = self.test(context, *args, **kw)
  File "C:/Work/msys64/home/Administrator/cbang/config/__init__.py", line 200:
    ret = conf.env.cb_methods[name](conf, **kwargs)
  File "C:/Work/msys64/home/Administrator/cbang/config/compiler/__init__.py", line 161:
    if compiler == 'gnu': print('  GCC Version:', gcc_version_str(env))
  File "C:/Work/msys64/home/Administrator/cbang/config/compiler/__init__.py", line 45:
    return check_output(cmd).strip().decode('utf8')
  File "C:/Work/msys64/clang64/lib/python3.12/subprocess.py", line 466:
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "C:/Work/msys64/clang64/lib/python3.12/subprocess.py", line 548:
    with Popen(*popenargs, **kwargs) as process:
  File "C:/Work/msys64/clang64/lib/python3.12/subprocess.py", line 1026:
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:/Work/msys64/clang64/lib/python3.12/subprocess.py", line 1538:
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,

[kbernhagen]

Maybe try
scons compiler=clang

Maybe try scons compiler=clang

$ scons compiler=clang
scons: Reading SConscript files ...
     Compiler: clang (clang)
     Platform: win32
Compiler Mode: gnu
   Build Mode: release
         Arch: x86
       Jobs: 4
Checking for C library pthread... no
Exception: Need library pthread:
  File "C:/Work/msys64/home/Administrator/cbang/SConstruct", line 85:
    conf.CBConfig('compiler')
  File "C:/Work/msys64/clang64/lib/python3.12/site-packages/SCons/SConf.py", line 741:
    ret = self.test(context, *args, **kw)
  File "C:/Work/msys64/home/Administrator/cbang/config/__init__.py", line 200:
    ret = conf.env.cb_methods[name](conf, **kwargs)
  File "C:/Work/msys64/home/Administrator/cbang/config/compiler/__init__.py", line 319:
    conf.CBRequireLib('pthread')
  File "C:/Work/msys64/clang64/lib/python3.12/site-packages/SCons/SConf.py", line 741:
    ret = self.test(context, *args, **kw)
  File "C:/Work/msys64/home/Administrator/cbang/config/__init__.py", line 144:
    raise Exception('Need library ' + lib)

[jcoffland]

I'm not saying it's impossible but we do not currently support msys2 builds.

To investigate the error above you need to look at config.log. Near the end you should be able to see why pthread detection failed. It usually has nothing to do with pthreads. Pthreads is just the first thing it tries to configure with the target compiler. If you get past this, there are likely many more things to fix.

You should also make sure the clang command is on your PATH. Simply run clang to find out.

Of course I have clang in PATH. BTW, here is your config.log:

file C:/Work/msys64/home/Administrator/cbang/config/__init__.py,line 363:
	Configure(confdir = .sconf_temp)
scons: Configure: Checking for C library pthread... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.o -c -std=c99 -O3 -fstack-protector-strong -DNDEBUG -D_FORTIFY_SOURCE=2 .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0_c840c272d0cf1c7253efb09255f1bd96.exe -Wl,-x -Wl,-z,relro,-z,now -pie .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.o -lpthread
clang: warning: argument unused during compilation: '-pie' [-Wunused-command-line-argument]
lld: error: unknown argument: -x
lld: error: unknown argument: -z
lld: error: unknown argument: -z
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

[kbernhagen]

I'm guessing -Wl,-x -Wl,-z,relro,-z,now should not be added if compiler == 'clang', instead of just checking platform darwin.

Still should check for darwin, because 'gcc' is likely a just a link to clang on darwin.

[kbernhagen]

Untested:

diff --git a/config/compiler/__init__.py b/config/compiler/__init__.py
index b0e74771..1bc844dc 100644
--- a/config/compiler/__init__.py
+++ b/config/compiler/__init__.py
@@ -279,7 +279,7 @@ def configure(conf, cstd = 'c99'):
         if harden:
             if optimize: env.CBDefine('_FORTIFY_SOURCE=2')
             env.AppendUnique(CCFLAGS = ['-fstack-protector-strong'])
-            if env['PLATFORM'] != 'darwin':
+            if not (compiler == 'clang' or env['PLATFORM'] == 'darwin'):
                 env.AppendUnique(LINKFLAGS = ['-Wl,-z,relro,-z,now'])
                 if not static: env.AppendUnique(LINKFLAGS = ['-pie'])

[kbernhagen]

Quick workaround is
scons compiler=clang harden=0

[kbernhagen]

Now that the default compiler is clang on osx, we should trust that it is real gcc if so set.
So, I think we should just have
if compiler != ‘clang’:

Or maybe
if compiler == ‘gcc’:

Quick workaround is scons compiler=clang harden=0

file C:/Work/msys64/home/Administrator/cbang/config/__init__.py,line 363:
	Configure(confdir = .sconf_temp)
scons: Configure: Checking for C library pthread... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.o -c -std=c99 -O3 -DNDEBUG .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0_1950c611d95ea356b39ebcb3c8c01617.exe -Wl,-x .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.o -lpthread
lld: error: unknown argument: -x
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

[kbernhagen]

Got me. You could try adding debug=1 for now to disable that flag and see what happens.

Got me. You could try adding debug=1 for now to disable that flag and see what happens.

It can proceed with debug=1:

 scons compiler=clang harden=0 debug=1
scons: Reading SConscript files ...
     Compiler: clang (clang)
     Platform: win32
Compiler Mode: gnu
   Build Mode: debug
         Arch: x86
       Jobs: 4
Checking for C library pthread... yes
Checking for C header file zlib.h... yes
Checking for C library z... yes
Checking for C header file bzlib.h... yes
Checking for C library bz2... yes
Checking for C header file lz4frame.h... yes
Checking for C library lz4... yes
Checking for C library xxhash... no
Checking for C header file expat.h... yes
Checking for C library libexpatMT... no
Checking for C library expat... yes
Checking for C library ws2_32... yes
Checking for C library sqlite3... yes
Checking for C header file sqlite3.h... yes
Checking for C function sqlite3_backup_init()... yes
Checking for C header file yaml.h... no
Need header yaml.h(cached) error: no result
Checking for C library snappy... no
Need library snappy(cached) error: no result
Checking for C header file mysql/mysql.h... no
Checking for C header file event2/event.h... no
Need header event2/event.h(cached) error: no result
Checking for C function epoll_create1()... no
Checking for C library zstd... yes
Checking for C header file openssl/ssl.h... yes
Checking for C library crypto... yes
Checking for C library ssl... yes
Checking for C library ws2_32... yes
Checking for C library advapi32... yes
Checking for C library gdi32... yes
Checking for C library user32... yes
Checking for C library crypt32... yes
Checking for openssl version >= 1.1.0...yes
Checking for C library winmm... yes
Checking for C library dbghelp... yes
Checking for C++ header file v8.h... no
Need C++ header v8.h(cached) error: no result
Checking for C library ws2_32... yes
Checking for C library winmm... yes
Checking for C library setupapi... yes
Checking for C header file valgrind/valgrind.h... no
Checking for C header file execinfo.h... no
Checking for C library kern... no
scons: done reading SConscript files.
scons: Building targets ...

But it will fail at libevent:

src/libevent/src/strlcpy.c:48:1: error: a function definition without a prototype is deprecated in all versions of C and is not supported in C23
      [-Werror,-Wdeprecated-non-prototype]
   48 | event_strlcpy_(dst, src, siz)
      | ^
1 error generated.
clang -o build/libevent/win32/buffer_iocp.o -c -std=c99 -fsigned-char -g -Wall -Werror -Wno-parentheses-equality -Wno-unused-function -DDEBUG -D_REENTRANT -DXML_STATIC
-DBOOST_ALL_NO_LIB -DCBANG_DEBUG_LEVEL=1 -DUSING_CBANG -Iinclude -Isrc -Isrc/boost -Ibuild/libevent/include -Isrc/libevent/include -Isrc/libevent/include -Ibuild/libevent/src -Isrc/libevent/src -Isrc/libevent/src src/libevent/win32/buffer_iocp.c
scons: *** [build/libevent/src/strlcpy.o] Error 1
scons: building terminated because of errors.

This is config.log:

file C:/Work/msys64/home/Administrator/cbang/config/__init__.py,line 363:
	Configure(confdir = .sconf_temp)
scons: Configure: Checking for C library pthread... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.o -c -std=c99 -g -Wall -Werror -DDEBUG .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0_30b2776f3dc18ca4b732828c060690c6.exe .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_0.o -lpthread
scons: Configure: yes

scons: Configure: Checking for C header file zlib.h... 
.sconf_temp/conftest_1cade717bebf4e7097945bc1865c6304_0.c <-
  |
  |#include <zlib.h>
  |
  |
clang -o .sconf_temp/conftest_1cade717bebf4e7097945bc1865c6304_0_fc0711e78b944ab764077c8c75dcb395.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_1cade717bebf4e7097945bc1865c6304_0.c
scons: Configure: yes

scons: Configure: Checking for C library z... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_1.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_1.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_1.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_1_68e75ad05307a7c2593fdd2cc98988c7.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_1.o -lpthread -lz
scons: Configure: yes

scons: Configure: Checking for C header file bzlib.h... 
.sconf_temp/conftest_5e4eb3ff8ab258f8240a85a75753d472_0.c <-
  |
  |#include <bzlib.h>
  |
  |
clang -o .sconf_temp/conftest_5e4eb3ff8ab258f8240a85a75753d472_0_b27599f97e482198d0451d5fe6d7f558.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_5e4eb3ff8ab258f8240a85a75753d472_0.c
scons: Configure: yes

scons: Configure: Checking for C library bz2... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_2.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_2.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_2.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_2_dea1aa47c481fb7e0f611615287d8074.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_2.o -lz -lpthread -lbz2
scons: Configure: yes

scons: Configure: Checking for C header file lz4frame.h... 
.sconf_temp/conftest_675fc86eb92c9c46bcd68cd4f1c13742_0.c <-
  |
  |#include <lz4frame.h>
  |
  |
clang -o .sconf_temp/conftest_675fc86eb92c9c46bcd68cd4f1c13742_0_1183d8288aec316fb4e5a56f35089354.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_675fc86eb92c9c46bcd68cd4f1c13742_0.c
scons: Configure: yes

scons: Configure: Checking for C library lz4... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_3.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_3.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_3.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_3_6d0251b2aba4199b1420bab0a87558de.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_3.o -lbz2 -lz -lpthread -llz4
scons: Configure: yes

scons: Configure: Checking for C library xxhash... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_4.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_4.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_4.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_4_2556dccb423728f86b8392e64a78305d.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_4.o -llz4 -lbz2 -lz -lpthread -lxxhash
lld: error: unable to find library -lxxhash
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

scons: Configure: Checking for C header file expat.h... 
.sconf_temp/conftest_f7b7451d5d7ef6691e8c096054d79ceb_0.c <-
  |
  |#include "expat.h"
  |
  |
clang -o .sconf_temp/conftest_f7b7451d5d7ef6691e8c096054d79ceb_0_aecb4b895752ca0be57f4d1993198eef.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_f7b7451d5d7ef6691e8c096054d79ceb_0.c
scons: Configure: yes

scons: Configure: Checking for C library libexpatMT... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_5.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_5.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_5.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_5_e87f5d0c47568e0189de6359d89fb94a.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_5.o -llz4 -lbz2 -lz -lpthread -lexpatMT
lld: error: unable to find library -lexpatMT
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

scons: Configure: Checking for C library expat... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_6.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_6.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_6.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_6_52bce5a3a79be841786a8fea8ecf210b.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_6.o -llz4 -lbz2 -lz -lpthread -lexpat
scons: Configure: yes

scons: Configure: Checking for C library ws2_32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_7.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_7.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_7.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_7_485942914458faee55c32b3c93f8e379.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_7.o -lexpat -llz4 -lbz2 -lz -lpthread -lws2_32
scons: Configure: yes

scons: Configure: Checking for C library sqlite3... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_8.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_8.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_8.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_8_8a3a10dc6776d0a8fd2e0e450f0fe412.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_8.o -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lsqlite3
scons: Configure: yes

scons: Configure: Checking for C header file sqlite3.h... 
.sconf_temp/conftest_d7c6beb34cbbd6333e89d5b17c2d6961_0.c <-
  |
  |#include <sqlite3.h>
  |
  |
clang -o .sconf_temp/conftest_d7c6beb34cbbd6333e89d5b17c2d6961_0_6e2b7c6afd1828ed2322882f43c00069.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_d7c6beb34cbbd6333e89d5b17c2d6961_0.c
scons: Configure: yes

scons: Configure: Checking for C function sqlite3_backup_init()... 
.sconf_temp/conftest_d596c3511e452c8a72a9aff422ff5137_0.c <-
  |
  |
  |#include <assert.h>
  |
  |#ifdef __cplusplus
  |extern "C"
  |#endif
  |char sqlite3_backup_init(void);
  |
  |#if _MSC_VER && !__INTEL_COMPILER
  |    #pragma function(sqlite3_backup_init)
  |#endif
  |
  |int main(void) {
  |#if defined (__stub_sqlite3_backup_init) || defined (__stub___sqlite3_backup_init)
  |  #error "sqlite3_backup_init has a GNU stub, cannot check"
  |#else
  |  sqlite3_backup_init();
  |#endif
  |
  |  return 0;
  |}
  |
clang -o .sconf_temp/conftest_d596c3511e452c8a72a9aff422ff5137_0.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_d596c3511e452c8a72a9aff422ff5137_0.c
clang -o .sconf_temp/conftest_d596c3511e452c8a72a9aff422ff5137_0_9388fd79b1aa5cd96d6a3839ce5b485a.exe -pthread .sconf_temp/conftest_d596c3511e452c8a72a9aff422ff5137_0.o -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread
scons: Configure: yes

scons: Configure: Checking for C header file yaml.h... 
.sconf_temp/conftest_eedbfe13cb90c6b98a21b471e8aa19a4_0.c <-
  |
  |#include <yaml.h>
  |
  |
clang -o .sconf_temp/conftest_eedbfe13cb90c6b98a21b471e8aa19a4_0_bf1e2395281edf6137bcef22ab194a80.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_eedbfe13cb90c6b98a21b471e8aa19a4_0.c
.sconf_temp/conftest_eedbfe13cb90c6b98a21b471e8aa19a4_0.c:2:10: fatal error: 'yaml.h' file not found
    2 | #include <yaml.h>
      |          ^~~~~~~~
1 error generated.
scons: Configure: no

scons: Configure: Need header yaml.h
scons: Configure: (cached) error: no result

scons: Configure: Checking for C library snappy... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_9.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_9.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_9.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_9_3dfa851e6aa5aee13e55d88b394db62d.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_9.o -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lsnappy
lld: error: unable to find library -lsnappy
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

scons: Configure: Need library snappy
scons: Configure: (cached) error: no result

scons: Configure: Checking for C header file mysql/mysql.h... 
.sconf_temp/conftest_0d4c611e698ab8103b25d3f82da26323_0.c <-
  |
  |#include "mysql/mysql.h"
  |
  |
clang -o .sconf_temp/conftest_0d4c611e698ab8103b25d3f82da26323_0_b58b546771715c0e5ab7a479faf2537a.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC .sconf_temp/conftest_0d4c611e698ab8103b25d3f82da26323_0.c
.sconf_temp/conftest_0d4c611e698ab8103b25d3f82da26323_0.c:2:10: fatal error: 'mysql/mysql.h' file not found
    2 | #include "mysql/mysql.h"
      |          ^~~~~~~~~~~~~~~
1 error generated.
scons: Configure: no

scons: Configure: Checking for C header file event2/event.h... 
.sconf_temp/conftest_a9b22a683a7b88f54b206dd9b0ef1af4_0.c <-
  |
  |#include <event2/event.h>
  |
  |
clang -o .sconf_temp/conftest_a9b22a683a7b88f54b206dd9b0ef1af4_0_5d481c8fd2e9125f33c83bd4289d9bbd.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_a9b22a683a7b88f54b206dd9b0ef1af4_0.c
.sconf_temp/conftest_a9b22a683a7b88f54b206dd9b0ef1af4_0.c:2:10: fatal error: 'event2/event.h' file not found
    2 | #include <event2/event.h>
      |          ^~~~~~~~~~~~~~~~
1 error generated.
scons: Configure: no

scons: Configure: Need header event2/event.h
scons: Configure: (cached) error: no result

scons: Configure: Checking for C function epoll_create1()... 
.sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0.c <-
  |
  |
  |#include <assert.h>
  |
  |#ifdef __cplusplus
  |extern "C"
  |#endif
  |char epoll_create1(void);
  |
  |#if _MSC_VER && !__INTEL_COMPILER
  |    #pragma function(epoll_create1)
  |#endif
  |
  |int main(void) {
  |#if defined (__stub_epoll_create1) || defined (__stub___epoll_create1)
  |  #error "epoll_create1 has a GNU stub, cannot check"
  |#else
  |  epoll_create1();
  |#endif
  |
  |  return 0;
  |}
  |
clang -o .sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0.c
clang -o .sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0_46169300375749933521c48b215112a4.exe -pthread .sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0.o -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread
ld.lld: error: undefined symbol: epoll_create1
>>> referenced by .sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0.c:18
>>>               .sconf_temp/conftest_3e457f26e673a7465024f2e009fab960_0.o:(main)
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

scons: Configure: Checking for C library zstd... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_10.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_10.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_10.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_10_2942d93fd568ce8f2634f15168d89e2d.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_10.o -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lzstd
scons: Configure: yes

scons: Configure: Checking for C header file openssl/ssl.h... 
.sconf_temp/conftest_d4efa789addd7bf9e71f629ac86897a2_0.c <-
  |
  |#include "openssl/ssl.h"
  |
  |
clang -o .sconf_temp/conftest_d4efa789addd7bf9e71f629ac86897a2_0_9728275691b173f21ad4edd71ddf5890.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_d4efa789addd7bf9e71f629ac86897a2_0.c
scons: Configure: yes

scons: Configure: Checking for C library crypto... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_11.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_11.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_11.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_11_ddc8c4cfe509429baab5cc0890d69535.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_11.o -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lcrypto
scons: Configure: yes

scons: Configure: Checking for C library ssl... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_12.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_12.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_12.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_12_047973f2a55a0fbfb6373afbf495c70b.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_12.o -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lssl
scons: Configure: yes

scons: Configure: Checking for C library ws2_32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_13.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_13.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_13.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_13_c546c5d8d74126ade2694baf71573a0e.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_13.o -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lws2_32
scons: Configure: yes

scons: Configure: Checking for C library advapi32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_14.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_14.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_14.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_14_47312b5e24fedccb5b59d2ccee49fdd4.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_14.o -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -ladvapi32
scons: Configure: yes

scons: Configure: Checking for C library gdi32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_15.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_15.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_15.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_15_36013af7ebe1069f9a977ffd408e2203.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_15.o -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lgdi32
scons: Configure: yes

scons: Configure: Checking for C library user32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_16.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_16.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_16.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_16_ee016b50edea6fa1e747e4333dd62b84.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_16.o -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -luser32
scons: Configure: yes

scons: Configure: Checking for C library crypt32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_17.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_17.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_17.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_17_847362942aaedfd06b7902c35044ea3c.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_17.o -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lcrypt32
scons: Configure: yes

scons: Configure: Checking for openssl version >= 1.1.0...
.sconf_temp/conftest_fad6e1e400f9b935a3e5373d9b48e5fc_0.cpp <-
  |
  |      #include <openssl/opensslv.h>
  |      int main() {
  |        const unsigned v = (1 << 28) + (1 << 20) + (0 << 12);
  |        int a[1 - 2 * (OPENSSL_VERSION_NUMBER < v)];
  |        a[0] = 0;
  |        return a[0];
  |      }
  |    
clang++ -o .sconf_temp/conftest_fad6e1e400f9b935a3e5373d9b48e5fc_0_6b232584e05f60c7f117b6bcfa61d70c.o -c -faligned-new -std=c++17 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_fad6e1e400f9b935a3e5373d9b48e5fc_0.cpp
scons: Configure: yes

scons: Configure: Checking for C library winmm... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_18.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_18.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_18.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_18_1beecf99b1330162a3713ecf8725a095.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_18.o -lcrypt32 -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lwinmm
scons: Configure: yes

scons: Configure: Checking for C library dbghelp... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_19.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_19.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_19.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_19_2caf550562afb093e8b7a6420afab09f.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_19.o -lwinmm -lcrypt32 -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -ldbghelp
scons: Configure: yes

scons: Configure: Checking for C++ header file v8.h... 
.sconf_temp/conftest_b485d24e5d01623b5cd9a3d5ae1b1811_0.cpp <-
  |
  |#include "v8.h"
  |
  |
clang++ -o .sconf_temp/conftest_b485d24e5d01623b5cd9a3d5ae1b1811_0_5e5f4a65d662f24ac4c11640bd8d22df.o -c -faligned-new -std=c++17 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_b485d24e5d01623b5cd9a3d5ae1b1811_0.cpp
.sconf_temp/conftest_b485d24e5d01623b5cd9a3d5ae1b1811_0.cpp:2:10: fatal error: 'v8.h' file not found
    2 | #include "v8.h"
      |          ^~~~~~
1 error generated.
scons: Configure: no

scons: Configure: Need C++ header v8.h
scons: Configure: (cached) error: no result

scons: Configure: Checking for C library ws2_32... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_20.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_20.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_20.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_20_b13f576b447349cf72e491eed3233192.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_20.o -lcrypt32 -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lws2_32
scons: Configure: yes

scons: Configure: Checking for C library winmm... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_21.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_21.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_21.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_21_1ecfb7d89f792485bfcbca6af3d7f7d0.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_21.o -lws2_32 -lcrypt32 -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lwinmm
scons: Configure: yes

scons: Configure: Checking for C library setupapi... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_22.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_22.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_22.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_22_c6b32aa42d6b4399f74e688b6964794a.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_22.o -lwinmm -lws2_32 -lcrypt32 -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lsetupapi
scons: Configure: yes

scons: Configure: Checking for C header file valgrind/valgrind.h... 
.sconf_temp/conftest_de562943bcf59844d7244f01a23fd52a_0.c <-
  |
  |#include <valgrind/valgrind.h>
  |
  |
clang -o .sconf_temp/conftest_de562943bcf59844d7244f01a23fd52a_0_c4d7264ac522cc009f0352594c7aa836.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_de562943bcf59844d7244f01a23fd52a_0.c
.sconf_temp/conftest_de562943bcf59844d7244f01a23fd52a_0.c:2:10: fatal error: 'valgrind/valgrind.h' file not found
    2 | #include <valgrind/valgrind.h>
      |          ^~~~~~~~~~~~~~~~~~~~~
1 error generated.
scons: Configure: no

scons: Configure: Checking for C header file execinfo.h... 
.sconf_temp/conftest_6f7883a0d7b97edb6d5deba0005ce79f_0.c <-
  |
  |#include "execinfo.h"
  |
  |
clang -o .sconf_temp/conftest_6f7883a0d7b97edb6d5deba0005ce79f_0_063099c295a48804eef9d4d9ad9125f3.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB .sconf_temp/conftest_6f7883a0d7b97edb6d5deba0005ce79f_0.c
.sconf_temp/conftest_6f7883a0d7b97edb6d5deba0005ce79f_0.c:2:10: fatal error: 'execinfo.h' file not found
    2 | #include "execinfo.h"
      |          ^~~~~~~~~~~~
1 error generated.
scons: Configure: no

scons: Configure: Checking for C library kern... 
.sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_23.c <-
  |
  |
  |
  |int main(void) {
  |  
  |return 0;
  |}
  |
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_23.o -c -std=c99 -fsigned-char -g -Wall -Werror -DDEBUG -D_REENTRANT -DXML_STATIC -DBOOST_ALL_NO_LIB -DCBANG_DEBUG_LEVEL=1 -DUSING_CBANG -Iinclude -Isrc -Isrc/boost .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_23.c
clang -o .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_23_2f8fa72f1c477d045a04d574e91ac7e2.exe -pthread .sconf_temp/conftest_e492448966d6e04631c094ba6d6e8a32_23.o -lsetupapi -lwinmm -lws2_32 -lcrypt32 -luser32 -lgdi32 -ladvapi32 -lws2_32 -lssl -lcrypto -lzstd -lsqlite3 -lws2_32 -lexpat -llz4 -lbz2 -lz -lpthread -lkern
lld: error: unable to find library -lkern
clang: error: linker command failed with exit code 1 (use -v to see invocation)
scons: Configure: no

[jcoffland]

I just pushed a fix for event_strlcpy_().