--- php-8.1.4/TSRM/TSRM.h.orig	2022-03-15 21:18:41.000000000 +0000
+++ php-8.1.4/TSRM/TSRM.h	2022-03-22 20:07:56.044769647 +0000
@@ -147,7 +147,7 @@
 # define __has_attribute(x) 0
 #endif
 
-#if !__has_attribute(tls_model) || defined(__FreeBSD__) || defined(__MUSL__) || defined(__HAIKU__)
+#if !__has_attribute(tls_model) || defined(__FreeBSD__) || defined(__MUSL__) || defined(__HAIKU__) || defined(__solaris__)
 # define TSRM_TLS_MODEL_ATTR
 #elif __PIC__
 # define TSRM_TLS_MODEL_ATTR __attribute__((tls_model("initial-exec")))