Improve cross-compiling for ttyname_r check

Author: petk

cmake/cmake/modules/PHP/CheckTtynameR.cmake

@@ -45,7 +45,12 @@ cmake_push_check_state(RESET)
 
   if(NOT _HAVE_TTYNAME_R)
     message(CHECK_FAIL "no (non-standard declaration)")
-  elseif(CMAKE_CROSSCOMPILING AND _HAVE_TTYNAME_R)
+  elseif(
+    NOT DEFINED HAVE_TTYNAME_R
+    CMAKE_CROSSCOMPILING
+    NOT CMAKE_CROSSCOMPILING_EMULATOR
+    AND _HAVE_TTYNAME_R
+  )
     set(HAVE_TTYNAME_R TRUE CACHE INTERNAL "Whether ttyname_r() works.")
     message(CHECK_PASS "guessing yes (cross-compiling)")
   else()

cmake/cmake/toolchains/template.cmake

@@ -57,3 +57,6 @@ set(ZEND_MM_OUTPUT "(size_t)8 (size_t)3 0")
 
 # Set to exit code of the stack limit check.
 set(ZEND_CHECK_STACK_LIMIT_EXITCODE 1)
+
+# Set to exit code of the ttyname_r check.
+set(HAVE_TTYNAME_R_EXITCODE 0)