Hi,

On Fri, Feb 2, 2024 at 12:56 PM John Marriott <[email protected]> wrote:
>
>
>
> On 02-Feb-2024 08:30, Christian Brabandt wrote:
>
> patch 9.1.0071: Need a diff() Vim script function
>
> Commit: 
> https://github.com/vim/vim/commit/fa37835b8c0ed0f83952978fca4c332335ca7c46
> Author: Yegappan Lakshmanan <[email protected]>
> Date:   Thu Feb 1 22:05:27 2024 +0100
>
>     patch 9.1.0071: Need a diff() Vim script function
>
>     Problem:  Need a diff() Vim script function
>     Solution: Add the diff() Vim script function using the
>               xdiff internal diff library, add support for
>               "unified" and "indices" mode.
>               (Yegappan Lakshmanan)
>
>     fixes: #4241
>     closes: #12321
>
>     Signed-off-by: Yegappan Lakshmanan <[email protected]>
>     Signed-off-by: Christian Brabandt <[email protected]>
>
>
> After this patch, msys2 (clang x64 17.0.6) gives these errors if FEAT_DIFF is 
> disabled:
> <snip>
> clang -c -I. -Iproto -DWIN32 -DWINVER=0x0A00 -D_WIN32_WINNT=0x0A00 
> -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -D__USE_MINGW_ANSI_STDIO -pipe 
> -Wall -O3 -fomit-frame-pointer -fpie -fPIE -DFEAT_GUI_MSWIN -DFEAT_CLIPBOARD 
> diff.c -o gobjx86-64/diff.o
> diff.c:3499:25: error: use of undeclared identifier 
> 'DIFF_INTERNAL_OUTPUT_UNIFIED'
>  3499 |             *diff_output_fmt = DIFF_INTERNAL_OUTPUT_UNIFIED;
>       |                                ^
> diff.c:3501:25: error: use of undeclared identifier 
> 'DIFF_INTERNAL_OUTPUT_INDICES'
>  3501 |             *diff_output_fmt = DIFF_INTERNAL_OUTPUT_INDICES;
>       |                                ^
> diff.c:3510:15: error: use of undeclared identifier 'DIFF_IBLANK'
>  3510 |         *diffopts |= DIFF_IBLANK;
>       |                      ^
> diff.c:3512:15: error: use of undeclared identifier 'DIFF_ICASE'
>  3512 |         *diffopts |= DIFF_ICASE;
>       |                      ^
> diff.c:3514:15: error: use of undeclared identifier 'DIFF_IWHITE'
>  3514 |         *diffopts |= DIFF_IWHITE;
>       |                      ^
> diff.c:3516:15: error: use of undeclared identifier 'DIFF_IWHITEALL'
>  3516 |         *diffopts |= DIFF_IWHITEALL;
>       |                      ^
> diff.c:3518:15: error: use of undeclared identifier 'DIFF_IWHITEEOL'
>  3518 |         *diffopts |= DIFF_IWHITEEOL;
>       |                      ^
> diff.c:3530:27: error: unknown type name 'diffin_T'
>  3530 | list_to_diffin(list_T *l, diffin_T *din, int icase)
>       |                           ^
> diff.c:3563:23: error: unknown type name 'diffhunk_T'
>  3563 | get_diff_hunk_indices(diffhunk_T *hunk)
>       |                       ^
> 9 errors generated.
> make: *** [Make_cyg_ming.mak:1214: gobjx86-64/diff.o] Error 1
> </snip>
>
> Sorry, I'm not sure what the correct fix is.
>

I have created PR #13964 to address this build error.

- Yegappan

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