tycho: expose meta info via function API

source/tycho/CMakeLists.txt

@@ -53,13 +53,6 @@ target_include_directories(
       $ENV{OUT_DIR}
 )
 
-target_compile_definitions(
-   maraiah-tycho-hermes
-   PUBLIC
-      -DTYCHO_VERSION=\"$ENV{CARGO_PKG_VERSION}\"
-      -DTYCHO_AUTHORS=\"$ENV{CARGO_PKG_AUTHORS}\"
-)
-
 target_link_libraries(
    maraiah-tycho-hermes
    Qt5::Core

source/tycho/Cargo.toml

@@ -1,10 +1,8 @@
 [package]
-name        = "maraiah-tycho"
-version     = "0.1.0"
-authors     = ["Alison Watson <marrub@greyserv.net>", "Tae Matous"]
-description = "Tycho map editor."
-edition     = "2018"
-build       = "build.rs"
+name    = "maraiah-tycho"
+version = "0.0.0"
+edition = "2018"
+build   = "build.rs"
 
 [dependencies]
 maraiah = {path = "../.."}
@@ -12,6 +10,7 @@ memmap  = "0.7"
 
 [build-dependencies]
 cmake                     = "0.1"
+maraiah                   = {path = "../.."}
 rust_qt_binding_generator = "0.3"
 
 [[bin]]

source/tycho/cc_headers/tycho.h

@@ -20,4 +20,12 @@ constexpr std::uint32_t fourCC(std::uint8_t a,
    return (a << 24) | (b << 16) | (c << 8) | d;
 }
 
+extern "C" {
+   char const *tychoAuthors();
+   char const *tychoHomepage();
+   char const *tychoLicenseText();
+   char const *tychoRepository();
+   char const *tychoVersion();
+}
+
 // EOF

source/tycho/cc_source/menu.cc

@@ -59,8 +59,8 @@ void Menu::openAbout()
    Ui::About about{};
 
    about.setupUi(&dlg);
-   about.labelVer->setText(tr(TYCHO_VERSION));
-   about.labelAuthors->setText(tr(TYCHO_AUTHORS).replace(':', '\n'));
+   about.labelVer->setText(tr(tychoVersion()));
+   about.labelAuthors->setText(tr(tychoAuthors()).replace(':', '\n'));
 
    dlg.exec();
 }

source/tycho/source/main.rs

@@ -1,5 +1,6 @@
 use maraiah::{err::*, ffi};
 
+mod meta;
 mod qimpl;
 mod qintr;
 

source/tycho/source/meta.rs

@@ -0,0 +1,25 @@
+//! Meta-information exposing functions.
+
+use maraiah::{ffi, meta};
+
+macro_rules! meta_str {
+   ($($name:ident = $e:expr;)*) => {
+      $(
+      #[no_mangle]
+      pub extern "C" fn $name() -> ffi::NT
+      {
+         $e
+      }
+      )*
+   }
+}
+
+meta_str!(
+   tychoAuthors     = meta::C_AUTHORS;
+   tychoHomepage    = meta::C_HOMEPAGE;
+   tychoLicenseText = meta::C_LICENSE_TEXT;
+   tychoRepository  = meta::C_REPOSITORY;
+   tychoVersion     = meta::C_VERSION;
+);
+
+// EOF

source/tycho/source/qimpl.rs

@@ -1,3 +1,5 @@
+//! Qt implementation.
+
 mod project;
 
 pub use self::project::*;

source/tycho/source/qintr.rs

@@ -1,3 +1,4 @@
+//! Qt interface.
 #![allow(unused_imports)]
 #![allow(dead_code)]