vinix: support -os vinix (part 1)

cmd/v/help/build-c.txt

@@ -97,7 +97,7 @@ see also `v help build`.
       systems also (although we do not test it as regularly as for the above):
             `android`, `ios`,
             `freebsd`, `openbsd`, `netbsd`, `dragonfly`,
-            `solaris`, `serenity`, `haiku`
+            `solaris`, `serenity`, `haiku`, `vinix`
 
       Note that V has the concept of platform files, i.e. files ending
       with `_platform.c.v`, and usually only the matching files are used in

vlib/v/checker/checker.v

@@ -21,7 +21,7 @@ const int_max = int(0x7FFFFFFF)
 const (
 	valid_comp_if_os            = ['windows', 'ios', 'macos', 'mach', 'darwin', 'hpux', 'gnu',
 		'qnx', 'linux', 'freebsd', 'openbsd', 'netbsd', 'bsd', 'dragonfly', 'android', 'solaris',
-		'haiku', 'serenity']
+		'haiku', 'serenity', 'vinix']
 	valid_comp_if_compilers     = ['gcc', 'tinyc', 'clang', 'mingw', 'msvc', 'cplusplus']
 	valid_comp_if_platforms     = ['amd64', 'i386', 'aarch64', 'arm64', 'arm32', 'rv64', 'rv32']
 	valid_comp_if_cpu_features  = ['x64', 'x32', 'little_endian', 'big_endian']

vlib/v/doc/doc.v

@@ -41,6 +41,7 @@ pub enum Platform {
 	android
 	solaris
 	serenity
+	vinix
 	haiku
 	raw
 	cross // TODO: add functionality for v doc -os cross whenever possible
@@ -61,6 +62,7 @@ pub fn platform_from_string(platform_str string) ?Platform {
 		'js' { return .js }
 		'solaris' { return .solaris }
 		'serenity' { return .serenity }
+		'vinix' { return .vinix }
 		'android' { return .android }
 		'haiku' { return .haiku }
 		'nix' { return .linux }

vlib/v/gen/c/cheaders.v

@@ -332,22 +332,7 @@ voidptr memdup(voidptr src, int sz);
 	#error Cygwin is not supported, please use MinGW or Visual Studio.
 #endif
 
-#ifdef __linux__
-	#include <sys/types.h>
-	#include <sys/wait.h> // os__wait uses wait on nix
-#endif
-
-#ifdef __FreeBSD__
-	#include <sys/types.h>
-	#include <sys/wait.h> // os__wait uses wait on nix
-#endif
-
-#ifdef __DragonFly__
-	#include <sys/types.h>
-	#include <sys/wait.h> // os__wait uses wait on nix
-#endif
-
-#ifdef __serenity__
+#ifdef defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__vinix__) || defined(__serenity__) || defined(__sun)
 	#include <sys/types.h>
 	#include <sys/wait.h> // os__wait uses wait on nix
 #endif
@@ -362,11 +347,6 @@ voidptr memdup(voidptr src, int sz);
 	#include <sys/wait.h> // os__wait uses wait on nix
 #endif
 
-#ifdef __sun
-	#include <sys/types.h>
-	#include <sys/wait.h> // os__wait uses wait on nix
-#endif
-
 #ifdef _WIN32
 	#define WINVER 0x0600
 	#ifdef _WIN32_WINNT

vlib/v/gen/c/comptime.v

@@ -566,6 +566,9 @@ fn (mut g Gen) comp_if_to_ifdef(name string, is_comptime_optional bool) ?string
 		'serenity' {
 			return '__serenity__'
 		}
+		'vinix' {
+			return '__vinix__'
+		}
 		'freebsd' {
 			return '__FreeBSD__'
 		}

vlib/v/pref/os.v

@@ -17,6 +17,7 @@ pub enum OS {
 	android
 	solaris
 	serenity
+	vinix
 	haiku
 	raw
 	all
@@ -36,6 +37,7 @@ pub fn os_from_string(os_str string) ?OS {
 		'js' { return .js }
 		'solaris' { return .solaris }
 		'serenity' { return .serenity }
+		'vinix' { return .vinix }
 		'android' { return .android }
 		'haiku' { return .haiku }
 		'raw' { return .raw }
@@ -60,6 +62,7 @@ pub fn (o OS) str() string {
 		.android { return 'Android' }
 		.solaris { return 'Solaris' }
 		.serenity { return 'SerenityOS' }
+		.vinix { return 'Vinix' }
 		.haiku { return 'Haiku' }
 		.raw { return 'Raw' }
 		.all { return 'all' }
@@ -94,6 +97,10 @@ pub fn get_host_os() OS {
 	$if serenity {
 		return .serenity
 	}
+	// TODO: uncomment the vinix block after v.c is regenerated
+	// $if vinix {
+	//	return .vinix
+	// }
 	$if solaris {
 		return .solaris
 	}

vlib/v/pref/should_compile.v

@@ -184,6 +184,9 @@ pub fn (prefs &Preferences) should_compile_c(file string) bool {
 	if prefs.os != .serenity && file.ends_with('_serenity.c.v') {
 		return false
 	}
+	if prefs.os != .vinix && file.ends_with('_vinix.c.v') {
+		return false
+	}
 	return true
 }