Improve Meson + Cargo integration

Signed-off-by: main <magic_rb@redalder.org>

i386-unknown-none.txt

@@ -12,7 +12,7 @@ has_function_printf = false
 [built-in options]
 c_args = [ '-ffreestanding' ]
 cpp_args = [ '-ffreestanding' ]
-c_link_args = ['-ffreestanding', '-fno-pic', '-fno-pie', '-nostdlib', '--target=i386-unknown-none', '-march=i386' ]
+c_link_args = ['-ffreestanding', '-fno-pic', '-fno-pie', '-nostdlib', '--target=i386-unknown-none' ]
 rust_link_args = ['-ffreestanding', '-nostdlib' ]
 cpp_link_args = ['-ffreestanding', '-nostdlib' ]
 

meson.build

@@ -25,33 +25,37 @@ if get_option('release')
   cargo_args += '--release'
 endif
 
-## Run `cargo build` to generate the Rust static library containing all the Rust stuff
-cargo_result = run_command(
-  'sh'
-, '-c'
-, 'cd $MESON_SOURCE_ROOT ; ' + cargo.path() + ' build ' + ''.join(cargo_args) + ' --color always'
+rust_lib = custom_target(
+  'x86os-rust'
+, output: 'libx86os.a' # target/i386-unknown-none/debug/
+, command:
+    [ cargo, 'build', '--color', 'always', '-Zunstable-options', '--out-dir', '@OUTDIR@' ] + cargo_args
+, input:
+    [ 'Cargo.toml'
+    , 'Cargo.lock'
+    , 'src/gdt/access.rs'
+    , 'src/gdt/entry.rs'
+    , 'src/gdt/granularity.rs'
+    , 'src/gdt/mod.rs'
+    , 'src/idt/access.rs'
+    , 'src/idt/entry.rs'
+    , 'src/idt/mod.rs'
+    , 'src/rlibc/memory.rs'
+    , 'src/rlibc/mod.rs'
+    , 'src/screen/mod.rs'
+    , 'src/lib.rs'
+    , 'src/limited_pointer.rs'
+    , 'src/ring.rs'
+    ]
 )
-cargo_stdout = cargo_result.stdout().strip()
-cargo_stderr = cargo_result.stderr().strip()
-if cargo_stderr != ''
-  message(cargo_stderr)
-elif cargo_stdout != ''
-  message(cargo_stdout)
-else
-  message('Cargo is done')
-endif
-if cargo_result.returncode() > 0
-  exit(1)
-endif
 
-#
 kernel = executable(
   'x86os'
 , compiled_asm
 , link_args: [ '-Wl,-T../ld/linker.ld', '-Wl,-melf_i386' ]
-, objects: [ 'target/i386-unknown-none/debug/libx86os.a' ]
+, link_depends: [ 'ld/linker.ld' ]
+, link_with: [ rust_lib ]
 , link_language: 'c'
 )
 
 # include_directories: 'src',
-#  link_depends: 'ld/linker.ld'