Autotools: Refactor debug checks (#15215)

- Added help text for ZEND_DEBUG preprocessor macro
- CS synced

Zend/Zend.m4

@@ -168,16 +168,15 @@ AC_MSG_RESULT([$ZEND_ZTS])
 
 AC_MSG_CHECKING([whether to enable Zend debugging])
 AC_MSG_RESULT([$ZEND_DEBUG])
-
-if test "$ZEND_DEBUG" = "yes"; then
-  AC_DEFINE(ZEND_DEBUG,1,[ ])
+AH_TEMPLATE([ZEND_DEBUG],
+  [Define to 1 if debugging is enabled, and to 0 if not.])
+AS_VAR_IF([ZEND_DEBUG], [yes], [
+  AC_DEFINE([ZEND_DEBUG], [1])
   echo " $CFLAGS" | grep ' -g' >/dev/null || DEBUG_CFLAGS="-g"
   if test "$CFLAGS" = "-g -O2"; then
     CFLAGS=-g
   fi
-else
-  AC_DEFINE(ZEND_DEBUG,0,[ ])
-fi
+], [AC_DEFINE([ZEND_DEBUG], [0])])
 
 test -n "$GCC" && CFLAGS="-Wall -Wextra -Wno-unused-parameter -Wno-sign-compare $CFLAGS"
 dnl Check if compiler supports -Wno-clobbered (only GCC)

configure.ac

@@ -802,7 +802,7 @@ PHP_ARG_ENABLE([debug],
   [no],
   [no])
 
-if test "$PHP_DEBUG" = "yes"; then
+AS_VAR_IF([PHP_DEBUG], [yes], [
   PHP_DEBUG=1
   ZEND_DEBUG=yes
   changequote({,})
@@ -824,10 +824,10 @@ if test "$PHP_DEBUG" = "yes"; then
       CXXFLAGS="$CFLAGS -g"
     fi
   fi
-else
+], [
   PHP_DEBUG=0
   ZEND_DEBUG=no
-fi
+])
 
 PHP_ARG_ENABLE([debug-assertions],
   [whether to enable debug assertions in release mode],
@@ -836,10 +836,10 @@ PHP_ARG_ENABLE([debug-assertions],
   [no],
   [no])
 
-if test "$PHP_DEBUG_ASSERTIONS" = "yes"; then
+AS_VAR_IF([PHP_DEBUG_ASSERTIONS], [yes], [
   PHP_DEBUG=1
   ZEND_DEBUG=yes
-fi
+])
 
 AC_ARG_ENABLE([zts],
   [AS_HELP_STRING([--enable-zts],
@@ -1367,11 +1367,7 @@ ZEND_MODULE_API_NO=`$EGREP '#define ZEND_MODULE_API_NO ' $srcdir/Zend/zend_modul
 if test -z "$EXTENSION_DIR"; then
   extbasedir=$ZEND_MODULE_API_NO
   if test "$oldstyleextdir" = "yes"; then
-    if test "$PHP_DEBUG" = "1"; then
-      part1=debug
-    else
-      part1=no-debug
-    fi
+    AS_VAR_IF([PHP_DEBUG], [1], [part1=debug], [part1=no-debug])
     if test "$enable_zts" = "yes"; then
       part2=zts
     else
@@ -1383,10 +1379,7 @@ if test -z "$EXTENSION_DIR"; then
     if test "$enable_zts" = "yes"; then
       extbasedir=$extbasedir-zts
     fi
-
-    if test "$PHP_DEBUG" = "1"; then
-      extbasedir=$extbasedir-debug
-    fi
+    AS_VAR_IF([PHP_DEBUG], [1], [extbasedir=$extbasedir-debug])
     EXTENSION_DIR=$libdir/$extbasedir
   fi
 fi

scripts/phpize.m4

@@ -77,19 +77,17 @@ AC_MSG_CHECKING([for PHP installed headers prefix])
 AC_MSG_RESULT([$phpincludedir])
 
 dnl Checks for PHP_DEBUG / ZEND_DEBUG / ZTS.
-AC_MSG_CHECKING([if debug is enabled])
+AC_MSG_CHECKING([if debugging is enabled])
 old_CPPFLAGS=$CPPFLAGS
 CPPFLAGS="-I$phpincludedir"
-AC_EGREP_CPP(php_debug_is_enabled,[
+AC_EGREP_CPP([php_debug_is_enabled], [
 #include <main/php_config.h>
 #if ZEND_DEBUG
 php_debug_is_enabled
 #endif
-],[
-  PHP_DEBUG=yes
-],[
-  PHP_DEBUG=no
-])
+],
+  [PHP_DEBUG=yes],
+  [PHP_DEBUG=no])
 CPPFLAGS=$old_CPPFLAGS
 AC_MSG_RESULT([$PHP_DEBUG])
 
@@ -110,7 +108,7 @@ CPPFLAGS=$old_CPPFLAGS
 AC_MSG_RESULT([$PHP_THREAD_SAFETY])
 
 dnl Discard optimization flags when debugging is enabled.
-if test "$PHP_DEBUG" = "yes"; then
+AS_VAR_IF([PHP_DEBUG], [yes], [
   PHP_DEBUG=1
   ZEND_DEBUG=yes
   changequote({,})
@@ -132,10 +130,10 @@ if test "$PHP_DEBUG" = "yes"; then
       CXXFLAGS="$CFLAGS -g"
     fi
   fi
-else
+], [
   PHP_DEBUG=0
   ZEND_DEBUG=no
-fi
+])
 
 dnl Always shared.
 PHP_BUILD_SHARED