From bb90b74e2c14f64595e388496a1781ddf925a74c Mon Sep 17 00:00:00 2001
From: Alexander Medvednikov <alexander@medvednikov.com>
Date: Tue, 21 Apr 2026 15:29:10 +0300
Subject: [PATCH] builder: fix error building graphic app webview due to cflags
 (fixes #12445)

---
 vlib/v/cflag/cflags.v      | 57 ++++++++++++++++++++++++++++++++++++++
 vlib/v/cflag/cflags_test.v | 19 +++++++++++++
 2 files changed, 76 insertions(+)

diff --git a/vlib/v/cflag/cflags.v b/vlib/v/cflag/cflags.v
index 5b2128a8c..7af755640 100644
--- a/vlib/v/cflag/cflags.v
+++ b/vlib/v/cflag/cflags.v
@@ -150,6 +150,15 @@ pub fn (cflags []CFlag) defines_others_libs() ([]string, []string, []string) {
 		}
 		if copt.ends_with('.a') || copt.ends_with('.so') || copt.ends_with('.dylib')
 			|| copt.ends_with('.dll') || copt.ends_with('.lib') {
+			windows_import_libs := split_bare_windows_import_libs(copt)
+			if windows_import_libs.len > 0 {
+				libs << windows_import_libs.map(windows_import_lib_to_link_flag(it))
+				continue
+			}
+			if is_bare_windows_import_lib(copt) {
+				libs << windows_import_lib_to_link_flag(copt)
+				continue
+			}
 			libs << '"${copt}"'
 			continue
 		}
@@ -172,6 +181,54 @@ pub fn (cflags []CFlag) defines_others_libs() ([]string, []string, []string) {
 	return uniq_non_empty(defines), uniq_non_empty(others), uniq_non_empty(libs)
 }
 
+fn split_bare_windows_import_libs(value string) []string {
+	parts := split_quoted_flags(value)
+	if parts.len < 2 {
+		return []string{}
+	}
+	for part in parts {
+		if !is_bare_windows_import_lib(part) {
+			return []string{}
+		}
+	}
+	return parts
+}
+
+fn is_bare_windows_import_lib(value string) bool {
+	lib := value.trim_space()
+	return lib.len > '.lib'.len && lib.to_lower().ends_with('.lib') && !lib.contains('/')
+		&& !lib.contains('\\') && !lib.contains(':') && !lib.contains(' ') && !lib.contains('\t')
+}
+
+fn windows_import_lib_to_link_flag(value string) string {
+	lib := value.trim_space()
+	return '-l${lib[..lib.len - '.lib'.len]}'
+}
+
+fn split_quoted_flags(value string) []string {
+	mut parts := []string{}
+	mut buf := []u8{}
+	mut in_quote := false
+	for ch in value {
+		if ch == `"` {
+			in_quote = !in_quote
+			continue
+		}
+		if !in_quote && ch in [` `, `\t`] {
+			if buf.len > 0 {
+				parts << buf.bytestr()
+				buf = []u8{}
+			}
+			continue
+		}
+		buf << ch
+	}
+	if buf.len > 0 {
+		parts << buf.bytestr()
+	}
+	return parts
+}
+
 fn uniq_non_empty(args []string) []string {
 	mut uniq_args := []string{}
 	for a in args {
diff --git a/vlib/v/cflag/cflags_test.v b/vlib/v/cflag/cflags_test.v
index e6d03fb42..4d680fba5 100644
--- a/vlib/v/cflag/cflags_test.v
+++ b/vlib/v/cflag/cflags_test.v
@@ -20,3 +20,22 @@ fn test_format_keeps_include_and_library_paths_with_spaces_in_one_argument() {
 		value: library_dir
 	}.format() or { panic(err) } == '-L"${os.real_path(library_dir)}"'
 }
+
+fn test_defines_others_libs_splits_bare_windows_import_lib_names() {
+	_, _, libs := [
+		CFlag{
+			value: 'Version.lib Advapi32.lib Shell32.lib'
+		},
+	].defines_others_libs()
+	assert libs == ['-lVersion', '-lAdvapi32', '-lShell32']
+}
+
+fn test_defines_others_libs_keeps_direct_windows_import_lib_paths() {
+	direct_path := 'C:/Program Files/Windows Kits/10/Lib/Version.lib'
+	_, _, libs := [
+		CFlag{
+			value: direct_path
+		},
+	].defines_others_libs()
+	assert libs == ['"${direct_path}"']
+}
-- 
2.39.5