Autotools: Normalize 2nd arg in PHP_ADD_SOURCES_X

By using `m4_normalize(m4_expand([...]))`, the arguments can be split
into newlines without using backslashes and it makes working with lists
of files a bit easier.

Tested:
- variables inside the argument
- M4 macro expansions
- dnl comments
- newlines, leading and trailing spaces and tabs, sequences of
  backslash-then-newline, multiple spaces, tabs, newlines,
  backslash-then-newline, empty spaces
- quoted/unquoted arguments
- ...

Author: petk

build/php.m4

@@ -239,7 +239,7 @@ dnl how to build .. shared or static?
 
 dnl Iterate over the sources.
   old_IFS=[$]IFS
-  for ac_src in $2; do
+  for ac_src in m4_normalize(m4_expand([$2])); do
 
 dnl Remove the suffix.
       IFS=.

configure.ac

@@ -1678,7 +1678,7 @@ PHP_ADD_SOURCES(main/streams, streams.c cast.c memory.c filter.c \
 PHP_ADD_SOURCES(/main, internal_functions.c, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1, sapi)
 PHP_ADD_SOURCES_X(/main, internal_functions_cli.c, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1, PHP_BINARY_OBJS)
 
-PHP_ADD_SOURCES([Zend], m4_normalize([
+PHP_ADD_SOURCES([Zend], [
   Optimizer/block_pass.c
   Optimizer/compact_literals.c
   Optimizer/compact_vars.c
@@ -1760,7 +1760,7 @@ PHP_ADD_SOURCES([Zend], m4_normalize([
   zend_vm_opcodes.c
   zend_weakrefs.c
   zend.c
-]),
+],
   [-DZEND_ENABLE_STATIC_TSRMLS_CACHE=1 $fiber_asm_cflag])
 
 PHP_ADD_MAKEFILE_FRAGMENT([$abs_srcdir/scripts/Makefile.frag],

ext/bcmath/config.m4

@@ -4,7 +4,7 @@ PHP_ARG_ENABLE([bcmath],
     [Enable bc style precision math functions])])
 
 if test "$PHP_BCMATH" != "no"; then
-  PHP_NEW_EXTENSION([bcmath], m4_normalize([
+  PHP_NEW_EXTENSION([bcmath], [
     bcmath.c
     libbcmath/src/add.c
     libbcmath/src/compare.c
@@ -28,7 +28,7 @@ if test "$PHP_BCMATH" != "no"; then
     libbcmath/src/str2num.c
     libbcmath/src/sub.c
     libbcmath/src/zero.c
-  ]),
+  ],
   [$ext_shared],,
   [-DZEND_ENABLE_STATIC_TSRMLS_CACHE=1])
   PHP_ADD_BUILD_DIR([$ext_builddir/libbcmath/src])

ext/dom/config.m4

@@ -191,7 +191,7 @@ if test "$PHP_DOM" != "no"; then
       $LEXBOR_DIR/selectors-adapted/selectors.c
       $LEXBOR_DIR/tag/tag.c
     "])
-    PHP_NEW_EXTENSION([dom], m4_normalize([
+    PHP_NEW_EXTENSION([dom], [
         attr.c
         cdatasection.c
         characterdata.c
@@ -228,7 +228,7 @@ if test "$PHP_DOM" != "no"; then
         xpath_callbacks.c
         xpath.c
         $LEXBOR_SOURCES
-      ]),
+      ],
       [$ext_shared],,
       [$PHP_LEXBOR_CFLAGS])
     PHP_ADD_BUILD_DIR(m4_normalize([

ext/mysqlnd/config9.m4

@@ -38,7 +38,7 @@ if test "$PHP_MYSQLND" != "no" || test "$PHP_MYSQLND_ENABLED" = "yes"; then
     PHP_SETUP_OPENSSL(MYSQLND_SHARED_LIBADD, [AC_DEFINE(MYSQLND_HAVE_SSL,1,[Enable mysqlnd code that uses OpenSSL directly])])
   fi
 
-  PHP_NEW_EXTENSION([mysqlnd], m4_normalize([
+  PHP_NEW_EXTENSION([mysqlnd], [
     mysqlnd_alloc.c
     mysqlnd_auth.c
     mysqlnd_block_alloc.c
@@ -61,7 +61,7 @@ if test "$PHP_MYSQLND" != "no" || test "$PHP_MYSQLND_ENABLED" = "yes"; then
     mysqlnd_vio.c
     mysqlnd_wireprotocol.c
     php_mysqlnd.c
-  ]),
+  ],
   [$ext_shared],,
   [-DZEND_ENABLE_STATIC_TSRMLS_CACHE=1])
 

ext/standard/config.m4

@@ -396,7 +396,7 @@ AS_VAR_IF([php_cv_func_getifaddrs], [yes],
 dnl
 dnl Setup extension sources
 dnl
-PHP_NEW_EXTENSION([standard], m4_normalize([
+PHP_NEW_EXTENSION([standard], [
   array.c
   assert.c
   base64.c
@@ -460,7 +460,7 @@ PHP_NEW_EXTENSION([standard], m4_normalize([
   var_unserializer.c
   var.c
   versioning.c
-]),,,
+],,,
   [-DZEND_ENABLE_STATIC_TSRMLS_CACHE=1])
 
 PHP_ADD_BUILD_DIR([$ext_builddir/libavifinfo])