fix: minor fixes for C backend on windows

CHANGELOG.md

@@ -10,8 +10,12 @@ _unreleased_
 ### Type Checks
 - Ensure function parameter type exists
 
+### C Backend
+- builder: Fixes for using the C backend on windows
+- Fix string interpolation C error with tcc
+
 ### General Fixes
-- Fix integer division assign that could result in a float
+- _[JS]_ Fix integer division assign that could result in a float
 
 ### CLI and Tooling
 - `build`: Add `-cc` option to use a custom C compiler

lib/bait/builder/builder.bt

@@ -213,11 +213,10 @@ fun (mut b Builder) code_gen_c() i32 {
 	res := cgen.gen(b.parsed_files, b.parser.table, b.prefs) + '\n'
 	timers.show('GEN')
 
-	if os.exists_dir(b.prefs.out_name) {
+	if os.exists_dir(b.prefs.out_name) or os.platform() == 'win32' {
 		b.prefs.out_name += '.exe'
-	} else {
-		ensure_dir_exists(os.dir(b.prefs.out_name))
 	}
+	ensure_dir_exists(os.dir(b.prefs.out_name))
 
 	tmp_c_path := os.join_path(os.tmp_dir(), [os.file_name(b.prefs.out_name) + '.c'])
 	os.write_file(tmp_c_path, res)
@@ -228,7 +227,8 @@ fun (mut b Builder) code_gen_c() i32 {
 
 	if b.prefs.should_run{
 		argstr := b.prefs.user_args.join(' ')
-		run_res := os.system('./${b.prefs.out_name} ${argstr}')
+		run_cmd := './${b.prefs.out_name} ${argstr}'.replace('/', os.PATH_SEP)
+		run_res := os.system(run_cmd)
 		if not b.prefs.keep_exe {
 			os.rm(b.prefs.out_name)
 		}

lib/bait/gen/c/expr.bt

@@ -212,7 +212,7 @@ fun (mut g Gen) string_literal(node ast.StringLiteral) {
 
 fun (mut g Gen) string_inter_literal(node ast.StringInterLiteral) {
 	len := node.vals.length + node.exprs.length
-	g.write('interpolate(new_array_from_c(${len}, ${len}, sizeof(string), (string[]){')
+	g.write('interpolate(new_array_from_c(${len}, ${len}, sizeof(string), (string[${len}]){')
 	for i, val in node.vals {
 		esc_val := util.escape_char(val.replace('\n', '\\n'), `\"`)
 		g.write('from_c_string("${esc_val}")')

lib/builtin/decls.c.bt

@@ -7,7 +7,6 @@ import 'stdio.h' as #C._
 import 'string.h' as #C._
 import 'stdlib.h' as #C._
 import 'stdbool.h' as #C._
-import 'unistd.h' as #C._
 
 pub interface #C.int8_t {}
 pub interface #C.int16_t {}
@@ -45,8 +44,6 @@ pub fun #C.calloc(n i32, size i32) &u8
 
 pub fun #C.malloc(size i32) &u8
 
-pub fun #C.access(path &u8, mode i32) i32
-
 pub fun #C.memcpy(dest &void, src &void, size i32)
 
 pub fun #C.memmove(dest &void, src &void, size i32)

lib/os/decls.c.bt

@@ -0,0 +1,7 @@
+// SPDX-FileCopyrightText: 2024-present Lukas Neubert <[email protected]>
+// SPDX-License-Identifier: MPL-2.0
+package os
+
+import 'unistd.h' as #C._
+
+pub fun #C.access(path &u8, mode i32) i32