Build on M1

[markhalonen]

I had to add this to build on M1 Apple Silicon

diff --git a/deps/build.jl b/deps/build.jl
index d9165a4..bb97b1a 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -31,7 +31,7 @@ provides(
                                @build_steps(begin
                                        `./autogen.sh`
                                        `./configure --prefix=$(BinDeps.usrdir(modbus))`
-                                       `make install`
+                                       `make install CFLAGS='-Wno-nullability-completeness'`
                                end),
                        )
                end)

[EricHalonen]

This is still broken.

(coho-deploy) pkg> build
   Building Clp ──────→ `~/.julia/packages/Clp/NUuKQ/deps/build.log`
   Building TimeZones → `~/.julia/packages/TimeZones/K98G0/deps/build.log`
   Building CMake ────→ `~/.julia/packages/CMake/ULbyn/deps/build.log`
   Building PLCTag ───→ `~/.julia/packages/PLCTag/9jSKn/deps/build.log`
   Building Modbus ───→ `~/Coho/rona/coho-deploy/Modbus.jl/deps/build.log`
┌ Error: Error building `Modbus`, showing the last 100 of log: 
│ FILE    *funopen(const void *,
│         ^
│           _Nullable 
│ /usr/local/include/stdio.h:384:6: note: insert '_Nonnull' if the pointer should never be null
│ FILE    *funopen(const void *,
│         ^
│           _Nonnull 
│ In file included from modbus.c:25:
│ /usr/local/include/stdlib.h:134:25: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
│ double   atof(const char *);
│                          ^
│ /usr/local/include/stdlib.h:134:25: note: insert '_Nullable' if the pointer may be null
│ double   atof(const char *);
│                          ^
│                           _Nullable
│ /usr/local/include/stdlib.h:134:25: note: insert '_Nonnull' if the pointer should never be null
│ double   atof(const char *);
│                          ^
│                           _Nonnull
│ /usr/local/include/stdlib.h:135:22: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
│ int      atoi(const char *);
│                          ^
│ /usr/local/include/stdlib.h:135:22: note: insert '_Nullable' if the pointer may be null