I'm trying to build a wrapper around a lib written in C by having
importC compile the .c files, and then providing a nice D API on
top. My dub config file seems to be finding the C files to
compile without issue, but it's not passing the include dirs for
the preprocessor to find headers. Is there an option I'm missing
or is there some way to get DUB to do this for me aside from
passing like -cpp flags via dflags?
From my dub.json:
```
"cSourcePaths": [
"source/libgit2/src/",
"source/libgit2/src/util/"
],
"cImportPaths" : [
"source/libgit2/src/util/",
"source/libgit2/src/libgit2/"
],
"importPaths" : [
"source/libgit2/src/util/",
],
"excludedSourceFiles" : [
"source/libgit2/src/cli/*.c"
],
```
And the what dub's actually running when it preprocesses the
first .c file:
```
/usr/bin/cc -fno-blocks -dD -Wno-builtin-macro-redefined -E
-include
/opt/homebrew/Cellar/ldc/1.34.0/include/dlang/ldc/importc.h
source/libgit2/src/libgit2/annotated_commit.c -o
/var/folders/p3/6fcprxgn0xb77hzb031vm1_m0000gn/T/itmp-ldc-de8fa3/annotated_commit.i
```
Which has doesn't specify any -I flags