ca-1 builds (not properly)

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "subprojects/c-rbtree"]
 	path = subprojects/c-rbtree
 	url = https://github.com/c-util/c-rbtree
+[submodule "subprojects/picolibc"]
+	path = subprojects/picolibc
+	url = https://github.com/picolibc/picolibc

arl/meson.build

@@ -20,7 +20,8 @@ lib_arl = static_library(
   'syn.c',
   'types.c',
 
-  include_directories: [inc_arl, inc_mpdec],
+  include_directories: [inc_arl, inc],
   dependencies: [libclist_dep, libcrbtree_dep],
   link_with: [a_mpdec],
+  pic: false,
 )

build.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+set -e
+
+BDIR=build
+TDIR=targets
+TARGET="$1"
+
+if ! [[ -d "$TDIR/$TARGET" ]]; then
+	echo "Invalid target: $TARGET" > /dev/stderr
+	exit 1
+fi
+
+if [[ -f "$TDIR/$TARGET/meson_cross.txt" ]]; then
+	meson . "$BDIR" --cross-file "$TDIR/$TARGET/meson_cross.txt"
+else
+	meson . "$BDIR"
+fi
+
+meson configure -Dtarget_type="$TARGET" build
+
+meson compile -C build

ca1/meson.build

@@ -6,4 +6,5 @@ lib_ca1 = static_library(
   include_directories: [inc_arl, inc_ca1, inc_mpdec],
   link_with: [lib_arl],
   dependencies: [libclist_dep, libcrbtree_dep],
+  pic: false,
 )

libmpdec/meson.build

@@ -19,4 +19,7 @@ a_mpdec = static_library(
   'numbertheory.c',
   'sixstep.c',
   'transpose.c',
+
+  include_directories: [inc, inc_mpdec],
+  pic: false,
 )

meson.build

@@ -3,6 +3,31 @@ project('ca1fw', 'c',
     'warning_level=2', 'c_std=gnu11'],
 )
 
+link_args = []
+inc = []
+
+linker_script = meson.get_external_property('linker_script', '')
+if linker_script != ''
+  fn = meson.source_root() / linker_script
+  link_args += '-T' + fn
+endif
+
+if meson.get_external_property('use_picolibc', false)
+  picolibc_proj = subproject('picolibc', default_options: [
+    'multilib=false',
+    'picocrt=false',
+    'picolib=false',
+    'semihost=false',
+    'io-long-long=true',
+    'io-pos-args=true',
+    'atomic-ungetc=false',
+    'format-default=integer',
+    'newlib-iconv-encodings=us_ascii'
+  ])
+  lib_c = picolibc_proj.get_variable('lib_c')
+  inc += picolibc_proj.get_variable('inc')
+endif
+
 libclist_proj = subproject('c-list')
 libclist_dep = libclist_proj.get_variable('libclist_dep')
 
@@ -13,8 +38,14 @@ cc = meson.get_compiler('c')
 m_dep = cc.find_library('m', required: false)
 
 subdir('libmpdec')
-subdir('arl')
-subdir('ca1')
+inc += inc_mpdec
 
-target_dir = meson.get_external_property('target_dir', 'targets/unix')
+subdir('arl')
+inc += inc_arl
+
+subdir('ca1')
+inc += inc_ca1
+
+target_type = get_option('target_type')
+target_dir = 'targets' / target_type
 subdir(target_dir)

meson_options.txt

@@ -0,0 +1,2 @@
+option('target_type', type: 'string', value: 'unix',
+  description: 'Name of the target to build. See targets/')

subprojects/libcstdaux-1

@@ -1 +0,0 @@
-Subproject commit adda5ff3e9d98648a4e01ad800fafd584e4640ce

subprojects/libcstdaux-1.wrap

@@ -1,2 +0,0 @@
-[wrap-redirect]
-filename = c-rbtree/subprojects/libcstdaux-1.wrap

subprojects/picolibc

@@ -0,0 +1 @@
+Subproject commit f741d2340a443ef479548aefc12fa0c429095e4f

targets/ca1/main.c

@@ -0,0 +1,15 @@
+// intellectual property is bullshit bgdc
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <inttypes.h>
+
+int main(void)
+{
+	for (;;);
+}
+
+void _start(void)
+{
+	main();
+}

targets/ca1/meson.build

@@ -0,0 +1,11 @@
+inc_target = include_directories('.')
+
+exe_ca1 = executable(
+  'ca1',
+
+  'main.c',
+
+  include_directories: [inc_target, inc],
+  link_with: [lib_ca1, lib_arl, lib_c],
+  dependencies: [libclist_dep, libcrbtree_dep, m_dep],
+)

targets/ca1/meson_cross.txt

@@ -0,0 +1,30 @@
+[properties]
+sizeof_int = 4
+sizeof_wchar_t = 4
+sizeof_void* = 4
+
+alignment_char = 1
+alignment_void* = 2
+alignment_double = 2
+
+has_function_printf = false
+use_picolibc = true
+linker_script = 'targets/ca1/link.ld'
+
+[constants]
+arch = 'm68k-elf'
+
+[host_machine]
+system = ''
+cpu_family = 'm68k'
+cpu = '68000'
+endian = 'big'
+
+[binaries]
+c = arch + '-gcc'
+strip = arch + '-strip'
+objcopy = arch + '-objcopy'
+
+[built-in options]
+c_args = ['-mcpu=68000', '-save-temps']
+c_link_args = ['-nostdlib']

targets/unix/meson.build

@@ -6,7 +6,7 @@ exe_ca1 = executable(
   'main.c',
   'target_builtins.c',
 
-  include_directories: [inc_target, inc_arl, inc_ca1, inc_mpdec],
-  link_with: [lib_ca1, lib_arl],
+  include_directories: [inc_target, inc],
+  link_with: [lib_ca1, lib_arl, lib_c],
   dependencies: [libclist_dep, libcrbtree_dep, m_dep],
 )