<html>
    <head>
      <base href="http://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Include path argument should be redundant if -fmodule-map-file is specified"
   href="http://llvm.org/bugs/show_bug.cgi?id=21215">21215</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Include path argument should be redundant if -fmodule-map-file is specified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Modules
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>steveire@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The module-map-file, if specified, specifies the location of header files which
might be searched for. Currently an additional -I include/path must be
redundantly specified:


$ cat test.cpp 

#include "foo.h"

int main(int, char **) {

  return 0;
}

$ clang++ -E -fmodules -fmodule-map-file=include/foo.map test.cpp 
# 1 "test.cpp"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 318 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "test.cpp" 2
test.cpp:2:10: fatal error: 'foo.h' file not found
#include "foo.h"
         ^



int main(int, char **) {

  return 0;
}
1 error generated.

$ cat include/foo.map 
module foo {
  requires cplusplus
  header "foo.h"
}

$ clang++ -E -fmodules -fmodule-map-file=include/foo.map -I include test.cpp 
# 1 "test.cpp"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 318 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "test.cpp" 2

@import foo; /* clang -E: implicit import for
"/home/stephen/safe/dev/playground/modules/modulestry/include/foo.h" */

int main(int, char **) {

  return 0;
}</pre>
        </div>
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