--- a/pixman/pixman/pixman-x86.c
+++ b/pixman/pixman/pixman-x86.c
@@ -74,6 +74,8 @@
 
 #else
 
+#if !defined(__EMSCRIPTEN__)
+
 #if defined (__GNUC__)
 #include <cpuid.h>
 #elif defined(_MSC_VER)
@@ -100,10 +102,17 @@
 #error Unknown compiler
 #endif
 }
+ 
+#endif // !__EMSCRIPTEN__
 
 static cpu_features_t
 detect_cpu_features (void)
 {
+#if defined(__EMSCRIPTEN__)
+
+    return X86_MMX | X86_MMX_EXTENSIONS | X86_SSE | X86_SSE2 | X86_SSSE3;
+
+#else
     uint32_t a, b, c, d;
     cpu_features_t features = 0;
 
@@ -149,6 +158,8 @@
     }
 
     return features;
+
+#endif // !__EMSCRIPTEN__
 }
 
 #endif
--- a/pixman/pixman/pixman-ssse3.c
+++ b/pixman/pixman/pixman-ssse3.c
@@ -28,7 +28,9 @@
 #endif
 
 #include <stdlib.h>
+#if !defined(__EMSCRIPTEN__)
 #include <mmintrin.h>
+#endif
 #include <xmmintrin.h>
 #include <emmintrin.h>
 #include <tmmintrin.h>
--- a/pixman/meson.build
+++ b/pixman/meson.build
@@ -104,7 +104,11 @@
   if host_machine.cpu_family() == 'x86_64' or cc.get_id() == 'msvc'
     have_mmx = true
   elif host_machine.cpu_family() == 'x86' and cc.compiles('''
+      #if !defined(__EMSCRIPTEN__)
       #include <mmintrin.h>
+      #else
+      #include <xmmintrin.h>
+      #endif
       #include <stdint.h>
 
       /* Check support for block expressions */
@@ -167,7 +171,9 @@
         #      error "Need GCC >= 4.2 for SSE2 intrinsics on x86"
         #   endif
         #endif
+        #if !defined(__EMSCRIPTEN__)
         #include <mmintrin.h>
+        #endif
         #include <xmmintrin.h>
         #include <emmintrin.h>
         int param;
@@ -202,7 +208,9 @@
 if not use_ssse3.disabled() and not (cc.get_id() == 'msvc' and cc.version().version_compare('<16') and host_machine.cpu_family() == 'x86_64')
   if host_machine.cpu_family().startswith('x86')
     if cc.compiles('''
+        #if !defined(__EMSCRIPTEN__)
         #include <mmintrin.h>
+        #endif
         #include <xmmintrin.h>
         #include <emmintrin.h>
         int param;