From a9151b1a6abde8306c7b46ca52036b2dc9c1b76d Mon Sep 17 00:00:00 2001
From: Artem Panfilov <panfilov.artyom@gmail.com>
Date: Tue, 16 Apr 2019 12:02:05 +0300
Subject: [PATCH] ext/pcre/config0.m4: add ac_cv_have_pcre2_jit variable

The HAVE_PCRE_JIT_SUPPORT check uses AC_RUN_IFELSE, which is not
available when cross-compiling. As a fallback, JIT support is enabled
based on CPU architecture. However, this may be wrong,
e.g. when the JIT the feature was not enabled in the pcre2 build.

Add a cache variable for the PCRE JIT feature to make it possible to
override the check.

Backported from: 12ee246ae45889004fc2c099c04cfff1ce6e8848
Signed-off-by: Artem Panfilov <panfilov.artyom@gmail.com>
---
 ext/pcre/config0.m4 | 56 +++++++++++++++++++++++----------------------
 1 file changed, 29 insertions(+), 27 deletions(-)

diff --git a/ext/pcre/config0.m4 b/ext/pcre/config0.m4
index b9542f0113..f964429431 100644
--- a/ext/pcre/config0.m4
+++ b/ext/pcre/config0.m4
@@ -53,35 +53,37 @@ PHP_ARG_WITH(pcre-jit,,[  --with-pcre-jit         Enable PCRE JIT functionality
     AC_DEFINE(HAVE_PCRE, 1, [ ])
 
     if test "$PHP_PCRE_JIT" != "no"; then
-      AC_MSG_CHECKING([for JIT support in PCRE2])
+      AC_CACHE_CHECK([for JIT support in PCRE2], ac_cv_have_pcre2_jit, [
       AC_RUN_IFELSE([
-        AC_LANG_SOURCE([[
-            #include <pcre2.h>
-            #include <stdlib.h>
-            int main(void) {
-              uint32_t have_jit;
-              pcre2_config_8(PCRE2_CONFIG_JIT, &have_jit);
-              return !have_jit;
-            }
-        ]])], [
-        AC_MSG_RESULT([yes])
-        AC_DEFINE(HAVE_PCRE_JIT_SUPPORT, 1, [])
-      ],
-      [
-        AC_MSG_RESULT([no])
-      ],
-      [
-        AC_CANONICAL_HOST
-        case $host_cpu in
-        arm*|i[34567]86|x86_64|mips*|powerpc*|sparc)
-          AC_MSG_RESULT([yes])
-          AC_DEFINE(HAVE_PCRE_JIT_SUPPORT, 1, [])
-          ;;
-        *)
-          AC_MSG_RESULT([no])
-          ;;
-        esac
+          AC_LANG_SOURCE([[
+              #include <pcre2.h>
+              #include <stdlib.h>
+              int main(void) {
+                uint32_t have_jit;
+                pcre2_config_8(PCRE2_CONFIG_JIT, &have_jit);
+                return !have_jit;
+              }
+          ]])], [
+          ac_cv_have_pcre2_jit=yes
+        ],
+        [
+          ac_cv_have_pcre2_jit=no
+        ],
+        [
+          AC_CANONICAL_HOST
+          case $host_cpu in
+          arm*|i[34567]86|x86_64|mips*|powerpc*|sparc)
+            ac_cv_have_pcre2_jit=yes
+            ;;
+          *)
+            ac_cv_have_pcre2_jit=no
+            ;;
+          esac
+        ])
       ])
+      if test $ac_cv_have_pcre2_jit = yes; then
+        AC_DEFINE(HAVE_PCRE_JIT_SUPPORT, 1, [])
+      fi
     fi
 
     PHP_NEW_EXTENSION(pcre, php_pcre.c, no,, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1)
-- 
2.17.1