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authorBoris Kolpackov <boris@codesynthesis.com>2022-01-17 10:45:06 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2022-01-17 10:45:06 +0200
commitef6a70de5d0bc252380ebcb21eb84913473ead5d (patch)
treebb27438ea5a0afa69f6db5a9b55b367972dec63e /libbuild2
parent54c56af1067df562c232cb73b9a1b85f67d9bbf1 (diff)
Use UTF-8 as default input/source charset for C/C++ compilation
Diffstat (limited to 'libbuild2')
-rw-r--r--libbuild2/cc/compile-rule.cxx116
1 files changed, 89 insertions, 27 deletions
diff --git a/libbuild2/cc/compile-rule.cxx b/libbuild2/cc/compile-rule.cxx
index 29b32c6..77d01c6 100644
--- a/libbuild2/cc/compile-rule.cxx
+++ b/libbuild2/cc/compile-rule.cxx
@@ -250,7 +250,7 @@ namespace build2
compile_rule::
compile_rule (data&& d)
: common (move (d)),
- rule_id (string (x) += ".compile 5")
+ rule_id (string (x) += ".compile 6")
{
static_assert (sizeof (match_data) <= target::data_size,
"insufficient space");
@@ -1149,15 +1149,6 @@ namespace build2
append_options (cs, t, c_coptions);
append_options (cs, t, x_coptions);
-
- if (ot == otype::s)
- {
- // On Darwin, Win32 -fPIC is the default.
- //
- if (tclass == "linux" || tclass == "bsd")
- cs.append ("-fPIC");
- }
-
append_options (cs, cmode);
if (md.pp != preprocessed::all)
@@ -3015,8 +3006,8 @@ namespace build2
//
// So seeing that it is hard to trigger a legitimate VC preprocessor
// warning, for now, we will just treat them as errors by adding /WX.
- // BTW, another example of a plausible preprocessor warning is C4819
- // (character unrepresentable in source charset).
+ // BTW, another example of a plausible preprocessor warnings are C4819
+ // and C4828 (character unrepresentable in source charset).
//
// Finally, if we are using the module mapper, then all this mess falls
// away: we only run the compiler once, we let the diagnostics through,
@@ -3263,8 +3254,24 @@ namespace build2
append_options (args, cmode);
append_sys_hdr_options (args); // Extra system header dirs (last).
- // See perform_update() for details on /external:W0, /EHsc, /MD.
+ // See perform_update() for details on the choice of options.
//
+ {
+ bool sc (find_option_prefix ("/source-charset:", args));
+ bool ec (find_option_prefix ("/execution-charset:", args));
+
+ if (!sc && !ec)
+ args.push_back ("/utf-8");
+ else
+ {
+ if (!sc)
+ args.push_back ("/source-charset:UTF-8");
+
+ if (!ec)
+ args.push_back ("/execution-charset:UTF-8");
+ }
+ }
+
if (cvariant != "clang" && isystem (*this))
{
if (find_option_prefix ("/external:I", args) &&
@@ -3305,8 +3312,15 @@ namespace build2
}
case compiler_class::gcc:
{
+ append_options (args, cmode,
+ cmode.size () - (modules && clang ? 1 : 0));
+ append_sys_hdr_options (args); // Extra system header dirs (last).
+
// See perform_update() for details on the choice of options.
//
+ if (!find_option_prefix ("-finput-charset=", args))
+ args.push_back ("-finput-charset=UTF-8");
+
if (ot == otype::s)
{
if (tclass == "linux" || tclass == "bsd")
@@ -3335,10 +3349,6 @@ namespace build2
}
}
- append_options (args, cmode,
- cmode.size () - (modules && clang ? 1 : 0));
- append_sys_hdr_options (args); // Extra system header dirs (last).
-
// Setup the dynamic module mapper if needed.
//
// Note that it's plausible in the future we will use it even if
@@ -4609,8 +4619,24 @@ namespace build2
append_options (args, cmode);
append_sys_hdr_options (args);
- // See perform_update() for details on /external:W0, /EHsc, /MD.
+ // See perform_update() for details on the choice of options.
//
+ {
+ bool sc (find_option_prefix ("/source-charset:", args));
+ bool ec (find_option_prefix ("/execution-charset:", args));
+
+ if (!sc && !ec)
+ args.push_back ("/utf-8");
+ else
+ {
+ if (!sc)
+ args.push_back ("/source-charset:UTF-8");
+
+ if (!ec)
+ args.push_back ("/execution-charset:UTF-8");
+ }
+ }
+
if (cvariant != "clang" && isystem (*this))
{
if (find_option_prefix ("/external:I", args) &&
@@ -4635,6 +4661,15 @@ namespace build2
}
case compiler_class::gcc:
{
+ append_options (args, cmode,
+ cmode.size () - (modules && clang ? 1 : 0));
+ append_sys_hdr_options (args);
+
+ // See perform_update() for details on the choice of options.
+ //
+ if (!find_option_prefix ("-finput-charset=", args))
+ args.push_back ("-finput-charset=UTF-8");
+
if (ot == otype::s)
{
if (tclass == "linux" || tclass == "bsd")
@@ -4663,10 +4698,6 @@ namespace build2
}
}
- append_options (args, cmode,
- cmode.size () - (modules && clang ? 1 : 0));
- append_sys_hdr_options (args);
-
args.push_back ("-E");
append_lang_options (args, md);
@@ -6518,6 +6549,27 @@ namespace build2
if (md.pp != preprocessed::all)
append_sys_hdr_options (args); // Extra system header dirs (last).
+ // Set source/execution charsets to UTF-8 unless a custom charset
+ // is specified.
+ //
+ // Note that clang-cl supports /utf-8 and /*-charset.
+ //
+ {
+ bool sc (find_option_prefix ("/source-charset:", args));
+ bool ec (find_option_prefix ("/execution-charset:", args));
+
+ if (!sc && !ec)
+ args.push_back ("/utf-8");
+ else
+ {
+ if (!sc)
+ args.push_back ("/source-charset:UTF-8");
+
+ if (!ec)
+ args.push_back ("/execution-charset:UTF-8");
+ }
+ }
+
// If we have any /external:I options but no /external:Wn, then add
// /external:W0 to emulate the -isystem semantics.
//
@@ -6631,6 +6683,21 @@ namespace build2
}
case compiler_class::gcc:
{
+ append_options (args, cmode);
+
+ if (md.pp != preprocessed::all)
+ append_sys_hdr_options (args); // Extra system header dirs (last).
+
+ // Set the input charset to UTF-8 unless a custom one is specified.
+ //
+ // Note that the execution charset (-fexec-charset) is UTF-8 by
+ // default.
+ //
+ // Note that early versions of Clang only recognize uppercase UTF-8.
+ //
+ if (!find_option_prefix ("-finput-charset=", args))
+ args.push_back ("-finput-charset=UTF-8");
+
if (ot == otype::s)
{
// On Darwin, Win32 -fPIC is the default.
@@ -6734,11 +6801,6 @@ namespace build2
}
}
- append_options (args, cmode);
-
- if (md.pp != preprocessed::all)
- append_sys_hdr_options (args); // Extra system header dirs (last).
-
append_header_options (env, args, header_args, a, t, md, md.dd);
append_module_options (env, args, module_args, a, t, md, md.dd);