iOS: basic building and running (#5999)

vlib/sokol/f/f.v

@@ -17,7 +17,10 @@ pub const (
 #flag freebsd -I/usr/local/include/freetype2
 #flag freebsd -Wl -L/usr/local/lib
 
-#flag -lfreetype
+#flag windows -lfreetype
+#flag linux -lfreetype
+#flag darwin -lfreetype
+
 #flag darwin -lpng -lbz2 -lz
 
 #flag linux -I.

vlib/v/builder/c.v

@@ -78,5 +78,12 @@ pub fn (mut b Builder) compile_c() {
 		out_name_c = get_vtmp_filename(b.pref.out_name, '.tmp.so.c')
 	}
 	b.build_c(files, out_name_c)
+	if b.pref.os == .ios {
+		bundle_name := b.pref.out_name.split('/').last()
+		bundle_id := if b.pref.bundle_id != '' { b.pref.bundle_id } else { 'app.vlang.$bundle_name' }
+		display_name := if b.pref.display_name != '' { b.pref.display_name } else { bundle_name }
+		os.mkdir('$display_name\.app')
+		os.write_file('$display_name\.app/Info.plist', make_ios_plist(display_name, bundle_id, bundle_name, 1))
+	}
 	b.cc()
 }

vlib/v/builder/cc.v

@@ -137,7 +137,11 @@ fn (mut v Builder) cc() {
 		}
 	}
 	if v.pref.os == .ios {
-		ccompiler = 'xcrun --sdk iphoneos gcc -arch arm64'
+		ios_sdk := if v.pref.is_ios_simulator { 'iphonesimulator' } else { 'iphoneos' }
+		ios_sdk_path_res := os.exec('xcrun --sdk $ios_sdk --show-sdk-path') or { panic('Couldn\'t find iphonesimulator') }
+		mut isysroot := ios_sdk_path_res.output.replace('\n', '')
+
+		ccompiler = 'xcrun --sdk iphoneos clang -isysroot $isysroot'
 	}
 	// arguments for the C compiler
 	// TODO : activate -Werror once no warnings remain
@@ -146,6 +150,14 @@ fn (mut v Builder) cc() {
 	// warnings are totally fixed/removed
 	mut a := [v.pref.cflags, '-std=gnu11', '-Wall', '-Wextra', '-Wno-unused-variable', '-Wno-unused-parameter',
 		'-Wno-unused-result', '-Wno-unused-function', '-Wno-missing-braces', '-Wno-unused-label']
+	if v.pref.os == .ios {
+		a << '-framework Foundation'
+		a << '-framework UIKit'
+		a << '-framework Metal'
+		a << '-framework MetalKit'
+		a << '-DSOKOL_METAL'
+		a << '-fobjc-arc'
+	}
 	mut linker_flags := []string{}
 	// TCC on Linux by default, unless -cc was provided
 	// TODO if -cc = cc, TCC is still used, default compiler should be
@@ -335,12 +347,17 @@ fn (mut v Builder) cc() {
 	// Cross compiling windows
 	//
 	// Output executable name
-	a << '-o "$v.pref.out_name"'
+	if v.pref.os == .ios {
+		bundle_name := v.pref.out_name.split('/').last()
+		a << '-o "$v.pref.out_name\.app/$bundle_name"'
+	} else {
+		a << '-o "$v.pref.out_name"'
+	}
 	if os.is_dir(v.pref.out_name) {
 		verror("'$v.pref.out_name' is a directory")
 	}
 	// macOS code can include objective C  TODO remove once objective C is replaced with C
-	if v.pref.os == .mac {
+	if v.pref.os == .mac || v.pref.os == .ios {
 		a << '-x objective-c'
 	}
 	// The C file we are compiling
@@ -546,12 +563,12 @@ fn (mut v Builder) cc() {
 			}
 		}
 	}
-	if v.pref.os == .ios {
+	// if v.pref.os == .ios {
-		ret := os.system('ldid2 -S $v.pref.out_name')
+	// 	ret := os.system('ldid2 -S $v.pref.out_name')
-		if ret != 0 {
+	// 	if ret != 0 {
-			eprintln('failed to run ldid2, try: brew install ldid')
+	// 		eprintln('failed to run ldid2, try: brew install ldid')
-		}
+	// 	}
-	}
+	// }
 }
 
 fn (mut b Builder) cc_linux_cross() {

vlib/v/builder/compile.v

@@ -65,36 +65,49 @@ fn (mut b Builder) run_compiled_executable_and_exit() {
 	if b.pref.skip_running {
 		return
 	}
+	if b.pref.os == .ios && b.pref.is_ios_simulator == false {
+		panic('Running iOS apps on physical devices is not yet supported. Please run in the simulator using the -simulator flag.')
+	}
 	if b.pref.is_verbose {
 		println('============ running $b.pref.out_name ============')
 	}
-	mut cmd := '"$b.pref.out_name"'
+	if b.pref.os == .ios {
-	if b.pref.backend == .js {
+		device := '"iPhone SE (2nd generation)"'
-		cmd = 'node "${b.pref.out_name}.js"'
+		os.exec('xcrun simctl boot $device')
-	}
+		bundle_name := b.pref.out_name.split('/').last()
-	for arg in b.pref.run_args {
+		display_name := if b.pref.display_name != '' { b.pref.display_name } else { bundle_name }
-		// Determine if there are spaces in the parameters
+		os.exec('xcrun simctl install $device $display_name\.app')
-		if arg.index_byte(` `) > 0 {
+		bundle_id := if b.pref.bundle_id != '' { b.pref.bundle_id } else { 'app.vlang.$bundle_name' }
-			cmd += ' "' + arg + '"'
+		os.exec('xcrun simctl launch $device $bundle_id')
-		} else {
+	} else {
-			cmd += ' ' + arg
+		mut cmd := '"$b.pref.out_name"'
+		if b.pref.backend == .js {
+			cmd = 'node "${b.pref.out_name}.js"'
 		}
-	}
+		for arg in b.pref.run_args {
-	if b.pref.is_verbose {
+			// Determine if there are spaces in the parameters
-		println('command to run executable: $cmd')
+			if arg.index_byte(` `) > 0 {
-	}
+				cmd += ' "' + arg + '"'
-	if b.pref.is_test {
+			} else {
-		ret := os.system(cmd)
+				cmd += ' ' + arg
-		if ret != 0 {
+			}
-			exit(1)
+		}
+		if b.pref.is_verbose {
+			println('command to run executable: $cmd')
+		}
+		if b.pref.is_test {
+			ret := os.system(cmd)
+			if ret != 0 {
+				exit(1)
+			}
+		}
+		if b.pref.is_run {
+			ret := os.system(cmd)
+			// TODO: make the runner wrapping as transparent as possible
+			// (i.e. use execve when implemented). For now though, the runner
+			// just returns the same exit code as the child process.
+			exit(ret)
 		}
-	}
-	if b.pref.is_run {
-		ret := os.system(cmd)
-		// TODO: make the runner wrapping as transparent as possible
-		// (i.e. use execve when implemented). For now though, the runner
-		// just returns the same exit code as the child process.
-		exit(ret)
 	}
 	exit(0)
 }

vlib/v/builder/iosplist.v

@@ -0,0 +1,39 @@
+module builder
+
+fn make_ios_plist(display_name string, bundle_id string, bundle_name string, bundle_version int) string {
+	return '<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleDisplayName</key>
+	<string>$display_name</string>
+	<key>CFBundleExecutable</key>
+	<string>$bundle_name</string>
+	<key>CFBundleIdentifier</key>
+	<string>$bundle_id</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$bundle_name</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0.0</string>
+	<key>CFBundleSignature</key>
+	<string>VIOS</string>
+	<key>CFBundleVersion</key>
+	<string>$bundle_version</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>'
+}

vlib/v/pref/pref.v

@@ -102,6 +102,8 @@ pub mut:
 	prealloc            bool
 	vroot               string
 	out_name            string
+	display_name        string
+	bundle_id           string
 	path                string // Path to file/folder to compile
 	// -d vfmt and -d another=0 for `$if vfmt { will execute }` and `$if another { will NOT get here }`
 	compile_defines     []string // just ['vfmt']
@@ -118,6 +120,7 @@ pub mut:
 	only_check_syntax   bool // when true, just parse the files, then stop, before running checker
 	experimental        bool // enable experimental features
 	show_timings        bool // show how much time each compiler stage took
+	is_ios_simulator    bool
 }
 
 pub fn parse_args(args []string) (&Preferences, string) {
@@ -183,6 +186,9 @@ pub fn parse_args(args []string) (&Preferences, string) {
 			'-prod' {
 				res.is_prod = true
 			}
+			'-simulator' {
+				res.is_ios_simulator = true
+			}
 			'-stats' {
 				res.is_stats = true
 			}
@@ -285,6 +291,14 @@ pub fn parse_args(args []string) (&Preferences, string) {
 				res.custom_prelude = prelude
 				i++
 			}
+			'-name' {
+				res.display_name = cmdline.option(current_args, '-name', '')
+				i++
+			}
+			'-bundle' {
+				res.bundle_id = cmdline.option(current_args, '-bundle', '')
+				i++
+			}
 			else {
 				mut should_continue := false
 				for flag_with_param in list_of_flags_with_param {