Automatically determine build flags by parsing 'make -n' output #1167

1 files changed, 9 insertions, 2 deletions

diff --git a/ale_linters/c/gcc.vim b/ale_linters/c/gcc.vim
index 4b241e37..3ad243a3 100644
--- a/ale_linters/c/gcc.vim
+++ b/ale_linters/c/gcc.vim
@@ -3,20 +3,27 @@
 
 call ale#Set('c_gcc_executable', 'gcc')
 call ale#Set('c_gcc_options', '-std=c11 -Wall')
+call ale#Set('c_parse_makefile', 0)
 
 function! ale_linters#c#gcc#GetExecutable(buffer) abort
     return ale#Var(a:buffer, 'c_gcc_executable')
 endfunction
 
 function! ale_linters#c#gcc#GetCommand(buffer) abort
-    let l:paths = ale#c#FindLocalHeaderPaths(a:buffer)
+    let l:cflags = []
+    if g:ale_c_parse_makefile
+        let l:cflags = join(ale#c#ParseMakefile(a:buffer), ' ')
+    endif
+    if empty(l:cflags)
+        let l:cflags = ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer))
+    endif
 
     " -iquote with the directory the file is in makes #include work for
     "  headers in the same directory.
     return ale#Escape(ale_linters#c#gcc#GetExecutable(a:buffer))
     \   . ' -S -x c -fsyntax-only '
     \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h')) . ' '
-    \   . ale#c#IncludeOptions(l:paths)
+    \   . l:cflags . ' '
     \   . ale#Var(a:buffer, 'c_gcc_options') . ' -'
 endfunction