Bug 24669 – ImportC: C files are not compiled with '-i' flag

Consider the following source code layout: ``` main.d foo.c ``` with files main.d: ``` import foo; void main(){ foo.foo(); } ``` foo.c: ``` extern int puts(const char*); void foo(void){ puts(“foo"); } ``` `dmd -i main.d` fails with undefined reference to `foo`, indicating that foo.c is not being compiled.

https://issues.dlang.org/show_bug.cgi?id=24668 might block this as projects that currently work importing *.c files for decls only might stop working.

I fixed it here: https://github.com/dlang/dmd/pull/16776 PR got merged but i messed up the title so it didn't reference it