New comment by kruceter on void-packages repository

https://github.com/void-linux/void-packages/pull/40347#issuecomment-1307533681

Comment:
> * grass: v7.6 still uses `proj_api.h`, but the build does succeed. [Do you know if it functions correctly without proj4 api?]

It should work. `configure` has the following lines confirming this:

```
# PROJ version check: if proj.h exists, it must be proj 5+

ac_save_cppflags="$CPPFLAGS"
CPPFLAGS="$PROJINC $CPPFLAGS"
for ac_hdr in proj.h
do
ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
echo "configure:5727: checking for $ac_hdr" >&5

cat > conftest.$ac_ext <<EOF
#line 5730 "configure"
#include "confdefs.h"
#include <$ac_hdr>
EOF
```

UPD: I could not open it due to "missing GUI" (possibly refers to wxPython). I will look into it on my side.

---

> * merkaartor: with DACCEPT_USE_OF_DEPRECATED_PROJ_API_H removed, build still failed for me. Did it build correctly for you?

It did for me with proj 9.0.1.

---

> * vtk: current version fails due to proj_api.h, but it can be upgraded to >= 9.1.0 to fix.

I am at fault for overlooking it. I will update it on my side to see whether it works or not.