diff options
Diffstat (limited to 'libbuild2/cc/gcc.cxx')
| -rw-r--r-- | libbuild2/cc/gcc.cxx | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/libbuild2/cc/gcc.cxx b/libbuild2/cc/gcc.cxx index 3376c16..2c844b6 100644 --- a/libbuild2/cc/gcc.cxx +++ b/libbuild2/cc/gcc.cxx @@ -59,6 +59,25 @@ namespace build2 } } +#ifdef _WIN32 + // Some misconfigured MinGW GCC builds add absolute POSIX directories to + // their built-in search paths (e.g., /mingw/{include,lib}) which GCC then + // interprets as absolute paths relative to the current drive (so the set + // of built-in search paths starts depending on where we run things from). + // + // While that's definitely misguided, life is short and we don't want to + // waste it explaining this in long mailing list threads and telling + // people to complain to whomever built their GCC. So we will just + // recreate the behavior in a way that's consistent with GCC and let + // people discover this on their own. + // + static inline void + add_current_drive (string& s) + { + s.insert (0, work.string (), 0, 2); // Add e.g., `c:`. + } +#endif + // Extract system header search paths from GCC (gcc/g++) or compatible // (Clang, Intel) using the `-v -E </dev/null` method. // @@ -169,7 +188,13 @@ namespace build2 dir_path d; try { - d = dir_path (s, 1, s.size () - 1); + string ds (s, 1, s.size () - 1); + +#ifdef _WIN32 + if (path_traits::is_separator (ds[0])) + add_current_drive (ds); +#endif + d = dir_path (move (ds)); if (d.relative () || !exists (d, true)) continue; @@ -343,7 +368,14 @@ namespace build2 dir_path d; try { - d = dir_path (l, b, (e != string::npos ? e - b : e)); + string ds (l, b, (e != string::npos ? e - b : e)); + +#ifdef _WIN32 + if (path_traits::is_separator (ds[0])) + add_current_drive (ds); +#endif + + d = dir_path (move (ds)); if (d.relative ()) throw invalid_path (move (d).string ()); |