Start on liblibc - Add cfg_attr support to LoadCrates

2 files changed, 15 insertions, 0 deletions

diff --git a/src/ast/crate.cpp b/src/ast/crate.cpp
index fc93a809..5f27e02f 100644
--- a/src/ast/crate.cpp
+++ b/src/ast/crate.cpp
@@ -59,6 +59,7 @@ void Crate::load_externs()
     
     // Check for no_std or no_core, and load libstd/libcore
     // - Duplicates some of the logic in "Expand", but also helps keep crate loading separate to most of expand
+    // NOTE: Not all crates are loaded here, any crates loaded by macro invocations will be done during expand.
     bool no_std  = false;
     bool no_core = false;
     
@@ -68,6 +69,16 @@ void Crate::load_externs()
             no_std = true;
         if( a.name() == "no_core" )
             no_core = true;
+        if( a.name() == "cfg_attr" && a.items().size() == 2 ) {
+            if( check_cfg(this->m_attrs.m_span, a.items().at(0)) )
+            {
+                const auto& a2 = a.items().at(1);
+                if( a2.name() == "no_std" )
+                    no_std = true;
+                if( a2.name() == "no_core" )
+                    no_core = true;
+            }
+        }
     }
 
     if( no_core ) {
diff --git a/src/main.cpp b/src/main.cpp
index b3425e0d..439ccbaf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -147,6 +147,7 @@ int main(int argc, char *argv[])
     Cfg_SetValue("target_pointer_width", "64");

     Cfg_SetValue("target_endian", "little");

     Cfg_SetValue("target_arch", "x86-noasm");   // TODO: asm! macro

+    Cfg_SetValue("target_os", "foobar");

     Cfg_SetValueCb("target_has_atomic", [](const ::std::string& s) {

         if(s == "8")    return true;    // Has an atomic byte

         if(s == "ptr")  return true;    // Has an atomic pointer-sized value

@@ -155,6 +156,9 @@ int main(int argc, char *argv[])
     Cfg_SetValueCb("target_feature", [](const ::std::string& s) {

         return false;

         });

+    Cfg_SetValueCb("feature", [](const ::std::string& s) {

+        return false;

+        });

     

     

     try