Haiku fix ZTS build, disabling tls model

Closes GH-8047.

Author: devnexen

NEWS

@@ -2,6 +2,9 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? 2022, PHP 8.0.17
 
+- Core:
+  . Fixed Haiku ZTS build. (David Carlier)
+
 - Iconv:
   . Fixed bug GH-7953 (ob_clean() only does not set Content-Encoding). (cmb)
 

TSRM/TSRM.h

@@ -147,7 +147,7 @@ TSRM_API const char *tsrm_api_name(void);
 # define __has_attribute(x) 0
 #endif
 
-#if !__has_attribute(tls_model) || defined(__FreeBSD__) || defined(__MUSL__)
+#if !__has_attribute(tls_model) || defined(__FreeBSD__) || defined(__MUSL__) || defined(__HAIKU__)
 # define TSRM_TLS_MODEL_ATTR
 #elif __PIC__
 # define TSRM_TLS_MODEL_ATTR __attribute__((tls_model("initial-exec")))