build/test on Windows 10 with MinGW

[genio]

When building LibUV for Perl 5 (not Perl 6), we have to make use of cmake with MinGW and gmake.

Strawberry Perl (even Portables work here) makes both MinGW and gmake available to you out of the box and throws them both into your $env:PATH. You can then run cpanm Alien::cmake3 to get the latest cmake. perl -MAlien::cmake3 -E "say Alien::cmake3->bin_dir" will give you the path to the newly installed cmake bin directory. Add that to your path via: $env:PATH+="C:\Strawberry\ll_5.26.1.1_normal\lib\perl5\MSWin32-x64-multi-thread\auto\share\dist\Alien-cmake3\bin\".

Now, you have cmake, MinGW, and gmake binaries available in your path. Here's the build attempt I'm trying:

Unzip libuv-v1.23.1.tar.gz to C:\temp\libuv-v1.23.1

PS C:\temp\out> md -Force C:\temp\out\1.23.1\

Now we have a directory in which we can store our build.

PS C:\temp\out> cmake -G "MinGW Makefiles" -DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=true -DCMAKE_INSTALL_PREFIX:PATH=C:/temp/out/1.23.1/ -DCMAKE_MAKE_PROGRAM:PATH=gmake -DBUILD_TESTING=ON C:/temp/libuv-v1.23.1

Now, compile the project:

PS C:\temp\out> gmake all test

This will compile fine, but fail when it tries to run the test suite:

[100%] Linking C executable uv_run_tests.exe
CMakeFiles
\uv_run_tests.dir/objects.a(test-spawn.c.obj):test-spawn.c:(.text+0x43b0): undefined reference to `quote_cmd_arg'
CMakeFiles\uv_run_tests.dir/objects.a(test-spawn.c.obj
):test-spawn.c
:(.text+0x461e
): undefined reference
 to `make_program_args
'
CMakeFiles
\uv_run_tests.dir/objects.a
(test-spawn.c.obj):test
-spawn.c:(.text
+0x4676): undefined
 reference to
 `make_program_args
'
CMakeFiles\uv_run_tests.dir
/objects.a(test-spawn.c.obj
):test-spawn.c:(.text+0x4b60): undefined reference to `make_program_env
'
collect2.exe: error: ld returned 1 exit status

gmake[2]: *** [CMakeFiles\uv_run_tests.dir\build.make:2391: uv_run_tests.exe] Error 1

gmake[1]: *** [CMakeFiles\Makefile2:301: CMakeFiles/uv_run_tests.dir/all] Error 2

gmake: *** [Makefile:94: all] Error 2

Here's the entire output log

Is there something especially stupid that I'm doing wrong?

[genio]

That copied/pasted text above makes it appear as if there are newlines at the end. However, I'm thinking that may be due to some oddities in how MS redirects STDERR and STDOUT to a file via >> ?

This screenshot shows what it looks like if I just run it in the shell without redirecting the output:
https://image.ibb.co/hwbTwp/build_ss.png

[genio]

Thanks to @xenu the following patch allows the tests to run as expected:

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f13efc8..c739c1a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -342,7 +342,7 @@ target_link_libraries(uv_a ${uv_libraries})
 if(BUILD_TESTING)
   include(CTest)
   add_executable(uv_run_tests ${uv_test_sources})
-  target_compile_definitions(uv_run_tests PRIVATE ${uv_defines})
+  target_compile_definitions(uv_run_tests PRIVATE ${uv_defines} USING_UV_SHARED=1)
   target_compile_options(uv_run_tests PRIVATE ${uv_cflags})
   target_include_directories(uv_run_tests PRIVATE include)
   target_link_libraries(uv_run_tests uv ${uv_test_libraries})

However, the tests fail:

[100%] Building C object CMakeFiles/uv_run_tests.dir/test/runner-win.c.obj
In file included from C:\temp\libuv-v1.23.1\test\runner.h:97:0,
                 from C:\temp\libuv-v1.23.1\test\runner-win.c:33:
C:\temp\libuv-v1.23.1\test\runner-win.h:23:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable : 4996)

C:\temp\libuv-v1.23.1\test\runner-win.c: In function 'process_wait':
C:\temp\libuv-v1.23.1\test\runner-win.c:192:14: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
   if (result >= WAIT_OBJECT_0 && result < WAIT_OBJECT_0 + n) {
              ^~
C:\temp\libuv-v1.23.1\test\runner-win.c: In function 'process_read_last_line':
C:\temp\libuv-v1.23.1\test\runner-win.c:266:32: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
   for (start = read - 1; start >= 0; start--) {
                                ^~
C:\temp\libuv-v1.23.1\test\runner-win.c: At top level:
C:\temp\libuv-v1.23.1\test\runner-win.c:306:12: warning: function declaration isn't a prototype [-Wstrict-prototypes]
 static int clear_line() {
            ^~~~~~~~~~
[100%] Linking C executable uv_run_tests.exe
[100%] Built target uv_run_tests
Running tests...
Test project C:/temp/out
    Start 1: uv_test
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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
1/2 Test #1: uv_test ..........................***Failed  120.35 sec
    Start 2: uv_test_a
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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2/2 Test #2: uv_test_a ........................***Failed  123.36 sec

0% tests passed, 2 tests failed out of 2

Total Test time (real) = 243.74 sec

The following tests FAILED:
          1 - uv_test (Failed)
          2 - uv_test_a (Failed)
Errors while running CTest
gmake: *** [Makefile:61: test] Error 8
PS C:\temp\out>

[genio]

It looks like two tests are failing:

not ok 47 - fs_event_watch_dir_short_path
# exit code 3
# Output from process `fs_event_watch_dir_short_path`:
# Assertion failed in C:\temp\libuv-v1.23.1\test\test-fs-event.c on line 495: r == 0

not ok 168 - process_priority
# exit code 3
# Output from process `process_priority`:
# Assertion failed in C:\temp\libuv-v1.23.1\test\test-process-priority.c on line 58: priority == UV_PRIORITY_HIGHEST

[cjihrig]

@genio can you try cjihrig/libuv@cf1e84a as a fix for the process_priority test? See nodejs/node#22817 for an explanation of what's likely happening there.

[genio]

That does fix the process_priority test for me. Can you also work up the change @xenu supplied for the CMakeLists.txt?

Thanks!