diff options
Diffstat (limited to 'build2/cc/compile.cxx')
| -rw-r--r-- | build2/cc/compile.cxx | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/build2/cc/compile.cxx b/build2/cc/compile.cxx index dc669ce..eddd465 100644 --- a/build2/cc/compile.cxx +++ b/build2/cc/compile.cxx @@ -196,6 +196,18 @@ namespace build2 return nullptr; } + inline void compile:: + append_symexport_options (cstrings& args, const target& t) const + { + // With VC if a BMI is compiled with dllexport, then when such BMI is + // imported, it is auto-magically treated as dllimport. Let's hope + // other compilers follow suit. + // + args.push_back (t.is_a<bmis> () && tclass == "windows" + ? "-D__symexport=__declspec(dllexport)" + : "-D__symexport="); + } + match_result compile:: match (action act, target& t, const string&) const { @@ -683,10 +695,11 @@ namespace build2 // sha256 cs; - // This affects how we compile the source as well as the format of - // depdb so factor it in. + // These flags affect how we compile the source and/or the format of + // depdb so factor them in. // cs.append (&md.pp, sizeof (md.pp)); + cs.append (&symexport, sizeof (symexport)); if (md.pp != preprocessed::all) { @@ -1392,6 +1405,9 @@ namespace build2 args.push_back (d.string ().c_str ()); } + if (symexport && md.mod) + append_symexport_options (args, t); + // Some compile options (e.g., -std, -m) affect the preprocessor. // // Currently Clang supports importing "header modules" even when in @@ -2272,6 +2288,9 @@ namespace build2 args.push_back (d.string ().c_str ()); } + if (symexport && md.mod) + append_symexport_options (args, t); + append_options (args, t, c_coptions); append_options (args, t, x_coptions); append_options (args, tstd, @@ -3108,6 +3127,9 @@ namespace build2 args.push_back ("-I"); args.push_back (d.string ().c_str ()); } + + if (symexport && md.mod) + append_symexport_options (args, t); } append_options (args, t, c_coptions); |