Added option for a build.path

autoload/arduino.vim

@@ -42,6 +42,10 @@ function! arduino#InitializeConfig() abort
   if !exists('g:arduino_serial_cmd')
     let g:arduino_serial_cmd = 'screen {port} {baud}'
   endif
+  if !exists('g:arduino_build_path')
+    let g:arduino_build_path = '{project_dir}/build'
+  endif
+
   if !exists('g:arduino_serial_baud')
     let g:arduino_serial_baud = 9600
   endif
@@ -102,6 +106,17 @@ function! arduino#GetArduinoExecutable() abort
   endif
 endfunction
 
+function! arduino#GetBuildPath() abort 
+  if empty(g:arduino_build_path)
+    return ''
+  endif
+  let l:path = g:arduino_build_path
+  let l:path = substitute(l:path, '{file}', expand('%:p'), 'g')
+  let l:path = substitute(l:path, '{project_dir}', fnamemodify(expand('%:p'), ":h"), 'g')
+  return l:path
+endfunction
+
+
 function! arduino#GetArduinoCommand(cmd) abort
   let arduino = arduino#GetArduinoExecutable()
 
@@ -117,6 +132,10 @@ function! arduino#GetArduinoCommand(cmd) abort
   if !empty(g:arduino_programmer)
     let cmd = cmd . " --pref programmer=" . g:arduino_programmer
   endif
+  let l:build_path = arduino#GetBuildPath()
+  if !empty(l:build_path)
+    let cmd = cmd . " --pref build.path=" . l:build_path
+  endif
   let cmd = cmd . " " . g:arduino_args . " " . expand('%:p')
   return cmd
 endfunction

doc/arduino.txt

@@ -26,6 +26,7 @@ Overview:~
   |arduino_cmd|..................Path to the arduino executable
   |arduino_dir|..................Path to the arduino install directory
   |arduino_home_dir|.............Path to the arduino user install directory
+  |arduino_build_path|...........Path to use for building the sketch
   |arduino_run_headless|.........Try to run inside Xvfb
   |arduino_args|.................Additional args to pass to 'arduino' command.
   |arduino_board|................The fully-qualified name of the board.
@@ -59,6 +60,18 @@ able to detect it, but if it cannot you can set the value manually. >
   let g:arduino_home_dir = $HOME . ".arduino15"
 <
 
+                                                        *'g:arduino_build_path'*
+The path where the sketch will be build and all intermediate object files will
+be placed. The final binary (.bin) can be found after building/verification in
+the folder.
+For a dynamic path you can following substitutions:
+ - {file} is substituted with the current sketch file (.ino)
+ - {project_dir} is substituted with the folder the sketch resides in
+Usage of a build path can be disabled with g:arduino_build_path = ''.
+If disabled, arduino ide chooses a temporary path and will do a full rebuild. >
+  let g:arduino_build_path = "{project_dir}/build"
+<
+
                                                     *'g:arduino_run_headless'*
 Run the arduino command inside a Xvfb. Requires Xvfb to be installed and in the
 PATH. >

doc/tags

@@ -4,6 +4,7 @@
 'g:arduino_cmd'	arduino.txt	/*'g:arduino_cmd'*
 'g:arduino_dir'	arduino.txt	/*'g:arduino_dir'*
 'g:arduino_home_dir'	arduino.txt	/*'g:arduino_home_dir'*
+'g:arduino_build_path'	arduino.txt	/*'g:arduino_build_path'*
 'g:arduino_programmer'	arduino.txt	/*'g:arduino_programmer'*
 'g:arduino_run_headless'	arduino.txt	/*'g:arduino_run_headless'*
 'g:arduino_serial_baud'	arduino.txt	/*'g:arduino_serial_baud'*