Add support for WebAssembly compatibility

Author: Gioee

src/distance-cpu.c

@@ -732,15 +732,21 @@ float int8_distance_l1_cpu (const void *v1, const void *v2, int n) {
         return true;
     }
     #else
-    #include <sys/auxv.h>
-    #include <asm/hwcap.h>
-    bool cpu_supports_neon (void) {
-        #ifdef AT_HWCAP
-        return (getauxval(AT_HWCAP) & HWCAP_NEON) != 0;
+        #ifdef SQLITE_WASM_EXTRA_INIT
+        bool cpu_supports_neon (void) {
+            return false;
+        }
         #else
-        return false;
+        #include <sys/auxv.h>
+        #include <asm/hwcap.h>
+        bool cpu_supports_neon (void) {
+            #ifdef AT_HWCAP
+            return (getauxval(AT_HWCAP) & HWCAP_NEON) != 0;
+            #else
+            return false;
+            #endif
+        }
         #endif
-    }
     #endif
 #endif
 

src/sqlite-vector.c

@@ -21,7 +21,11 @@
 #include <stdbool.h>
 #include <stddef.h>
 
-#if defined(_WIN32) || ((defined(__linux__) && !defined(__GLIBC__) && !defined(__ANDROID__)))
+#if defined(_WIN32) || ((defined(__linux__) && !defined(__GLIBC__) && !defined(__ANDROID__))) || defined(SQLITE_WASM_EXTRA_INIT)
+// Provide strcasestr function implementation for environments that lack it:
+// - Windows (MinGW, MSVC, etc.)
+// - Linux with non-glibc C libraries (musl, uclibc, etc.)
+// - WebAssembly builds
 char *strcasestr(const char *haystack, const char *needle) {
     if (!haystack || !needle) return NULL;
     if (!*needle) return (char *)haystack;