Add --enable-address-sanitizer flag

When we need to enable ASan in PHP extension, we also need to enable it in PHP kernel. Providing this option makes it easier for us to enable ASan when compiling PHP.
And we use --enable-address-sanitizer in azure-pipelines.yml instead of changing CFLAGS.
We also add compile flag check to MSan.

Author: twose

azure-pipelines.yml

@@ -74,10 +74,7 @@ jobs:
     - template: azure/job.yml
       parameters:
         configurationName: DEBUG_ZTS_ASAN_UBSAN
-        configurationParameters: >-
-            --enable-debug --enable-zts
-            CFLAGS='-fsanitize=undefined,address -DZEND_TRACK_ARENA_ALLOC'
-            LDFLAGS='-fsanitize=undefined,address'
+        configurationParameters: '--enable-debug --enable-zts --enable-address-sanitizer'
         runTestsParameters: --asan
         timeoutInMinutes: 360
     - template: azure/msan_job.yml
@@ -90,9 +87,8 @@ jobs:
       parameters:
         configurationName: COMMUNITY
         configurationParameters: >-
-            --enable-debug --enable-zts
-            CFLAGS='-fsanitize=undefined,address -fno-sanitize-recover -DZEND_TRACK_ARENA_ALLOC'
-            LDFLAGS='-fsanitize=undefined,address'
+            --enable-debug --enable-zts --enable-address-sanitizer
+            CFLAGS='-fno-sanitize-recover'
     - template: azure/coverage_job.yml
       parameters:
         configurationName: COVERAGE_DEBUG_ZTS

configure.ac

@@ -982,6 +982,11 @@ PHP_ARG_ENABLE([memory-sanitizer],,
     [Enable memory sanitizer (clang only)])],
   [no],
   [no])
+PHP_ARG_ENABLE([address-sanitizer],,
+  [AS_HELP_STRING([--enable-address-sanitizer],
+    [Enable address sanitizer])],
+  [no],
+  [no])
 
 dnl Extension configuration.
 dnl ----------------------------------------------------------------------------
@@ -1374,8 +1379,21 @@ fi
 
 dnl Enable -fsanitize=memory late, because interceptors may break linking detection.
 if test "$PHP_MEMORY_SANITIZER" = "yes"; then
-  CFLAGS="$CFLAGS -fsanitize=memory -fsanitize-memory-track-origins"
-  CXXFLAGS="$CXXFLAGS -fsanitize=memory -fsanitize-memory-track-origins"
+  AX_CHECK_COMPILE_FLAG([-fsanitize=memory -fsanitize-memory-track-origins], [
+    CFLAGS="$CFLAGS -fsanitize=memory -fsanitize-memory-track-origins"
+    CXXFLAGS="$CXXFLAGS -fsanitize=memory -fsanitize-memory-track-origins"
+  ], [AC_MSG_ERROR([MemorySanitizer is not available])])
+fi
+
+if test "$PHP_ADDRESS_SANITIZER" = "yes"; then
+  AX_CHECK_COMPILE_FLAG([-fsanitize=undefined,address], [
+    CFLAGS="$CFLAGS -fsanitize=undefined,address -DZEND_TRACK_ARENA_ALLOC"
+    CXXFLAGS="$CXXFLAGS -fsanitize=undefined,address -DZEND_TRACK_ARENA_ALLOC"
+    LDFLAGS="$LDFLAGS -fsanitize=undefined,address"
+    AX_CHECK_COMPILE_FLAG([-fno-omit-frame-pointer], [
+      CFLAGS="$CFLAGS -fno-omit-frame-pointer"
+    ])
+  ], [AC_MSG_ERROR([AddressSanitizer is not available])])
 fi
 
 dnl