From d58a18b8edd4e42be0456454933ac266c230d97e Mon Sep 17 00:00:00 2001
From: w0rp <devw0rp@gmail.com>
Date: Sat, 11 Mar 2017 16:47:32 +0000
Subject: #277 #318 Support all same-directory includes for gcc and clang

---
 ale_linters/c/clang.vim   | 12 +++++++++---
 ale_linters/c/gcc.vim     |  6 ++++--
 ale_linters/cpp/clang.vim | 12 +++++++++---
 ale_linters/cpp/gcc.vim   |  6 ++++--
 4 files changed, 26 insertions(+), 10 deletions(-)

diff --git a/ale_linters/c/clang.vim b/ale_linters/c/clang.vim
index 205dd922..603e2b75 100644
--- a/ale_linters/c/clang.vim
+++ b/ale_linters/c/clang.vim
@@ -9,12 +9,18 @@ if !exists('g:ale_c_clang_options')
     let g:ale_c_clang_options = '-std=c11 -Wall'
 endif
 
+function! ale_linters#c#clang#GetCommand(buffer) abort
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return 'clang -S -x c -fsyntax-only '
+    \   . '-iquote ' . fnameescape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ' ' . g:ale_c_clang_options . ' -'
+endfunction
+
 call ale#linter#Define('c', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
 \   'executable': 'clang',
-\   'command': 'clang -S -x c -fsyntax-only '
-\       . g:ale_c_clang_options
-\       . ' -',
+\   'command_callback': 'ale_linters#c#clang#GetCommand',
 \   'callback': 'ale#handlers#HandleGCCFormat',
 \})
diff --git a/ale_linters/c/gcc.vim b/ale_linters/c/gcc.vim
index 594c5c83..a487909c 100644
--- a/ale_linters/c/gcc.vim
+++ b/ale_linters/c/gcc.vim
@@ -10,9 +10,11 @@ if !exists('g:ale_c_gcc_options')
 endif
 
 function! ale_linters#c#gcc#GetCommand(buffer) abort
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
     return 'gcc -S -x c -fsyntax-only '
-    \      . g:ale_c_gcc_options . ' -'
-
+    \   . '-iquote ' . fnameescape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ' ' . g:ale_c_gcc_options . ' -'
 endfunction
 
 call ale#linter#Define('c', {
diff --git a/ale_linters/cpp/clang.vim b/ale_linters/cpp/clang.vim
index 7cd86968..9915ac3a 100644
--- a/ale_linters/cpp/clang.vim
+++ b/ale_linters/cpp/clang.vim
@@ -6,12 +6,18 @@ if !exists('g:ale_cpp_clang_options')
     let g:ale_cpp_clang_options = '-std=c++14 -Wall'
 endif
 
+function! ale_linters#cpp#clang#GetCommand(buffer) abort
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return 'clang++ -S -x c++ -fsyntax-only '
+    \   . '-iquote ' . fnameescape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ' ' . g:ale_cpp_clang_options . ' -'
+endfunction
+
 call ale#linter#Define('cpp', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
 \   'executable': 'clang++',
-\   'command': 'clang++ -S -x c++ -fsyntax-only '
-\       . g:ale_cpp_clang_options
-\       . ' -',
+\   'command_callback': 'ale_linters#cpp#clang#GetCommand',
 \   'callback': 'ale#handlers#HandleGCCFormat',
 \})
diff --git a/ale_linters/cpp/gcc.vim b/ale_linters/cpp/gcc.vim
index 200a25c1..ad1b93b7 100644
--- a/ale_linters/cpp/gcc.vim
+++ b/ale_linters/cpp/gcc.vim
@@ -16,9 +16,11 @@ if !exists('g:ale_cpp_gcc_options')
 endif
 
 function! ale_linters#cpp#gcc#GetCommand(buffer) abort
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
     return 'gcc -S -x c++ -fsyntax-only '
-    \      . g:ale_cpp_gcc_options . ' -'
-
+    \   . '-iquote ' . fnameescape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ' ' . g:ale_cpp_gcc_options . ' -'
 endfunction
 
 call ale#linter#Define('cpp', {
-- 
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