Compilation database is empty with recursive make pattern

[suzukajiang]

I'm seeing empty compilation databases from facebook/zstd makefile. It has a pattern of:

Foo:
$(MAKE) -C lib
Meaning if we:

compiledb make Foo
There are lots of invocations of gcc but the resulting compile_commands.json is empty ([]).

[Yingzi1234]

Thank you for your GitHub issue! In order to better solve your problem, could you provide us with the specific problem Project and specific steps to reproduce it? This will be very helpful for us to solve your problem. Thank you in advance!

[suzukajiang]

FIFO.zip

This Example can reproduce it.

[Yingzi1234]

@suzukajiang Thank you for your reply! Based on your description, we cannot reproduced your issue, could you provide us with some more detailed information?

1. What is your Compiler database tool version?
2. What is your Compilation environment and toolchain?
3. Could you provide us with your reproduction steps? It would be more beneficial to us if you could reproduce your problem.

[suzukajiang]

FIFO.zip
There were some issues with the original project，You can reproduce the issue with the makefile in root directory。

toolchain:
MinGW64
gcc 13.2.0
GNU make 4.4.1
cpptools v1.20.5
vscode v1.89.1

[Yingzi1234]

@suzukajiang We apologize for getting back to you so late. Based on the information you provided we are still unable to reproduce your problem, can you try to upgrade the ‘Compiledb’ tool and try again to see if the problem is still reproduced?
Please feel free if you have any concern!

[suzukajiang]

It has the same problem with compiledb. You can find the issue in nickdiego/compiledb#111

[Yingzi1234]

Could you try the following to solve your problem?

1. Removing the .exe after my compiler path.
2. Manually re-add it to the generated compile_commands.json again.

Your makefile would become:

clang:
	@echo 'clangg'
	clang -IC:\tools\MinGW\i686-w64-mingw32\include hello.c -v -o hello.exe

mingw:
	C:\tools\MinGW\bin\gcc -IC:\tools\MinGW\i686-w64-mingw32\include hello.c -v -o hello.exe

[gcampbell-msft]

@suzukajiang Also, could you provide some information about what machine and OS this is behaving on?

[github-actions]

This issue is now marked as 'stale' due to there being no activity on it for the past 30 days and being labeled 'more info needed'. Unless the 'stale' label is removed or the issue is commented on, this will be closed in 14 days. If you would like to make this issue exempt from getting stale, please provide the information needed for the maintainers to understand the issue better.

[github-actions]

This issue is now closed due to there being no activity on it for the past 14 days since being marked as 'stale'.