Autotools: Add phpized configure log and help separators (#15251)

- This quotes all PHP_CONFIGURE_PART arguments
- When configuring and building extensions with phpize, this makes the
  './configure --help' and './configure' log output a bit more readable
  as it separates the extension configuration, Libtool configuration and
  the rest of the Autoconf and phpize configuration options.
- The ./configure output separators bold tags are moved to the
  PHP_INIT_BUILD_SYSTEM macro to be available also in phpized extensions
- The obsolete ticks `...` converted to the recommended $(...); Autoconf
  configure re-executes itself in shells where the $(...) still wouldn't
  work ok. For example, the default, initial, non-updated shell on
  Solaris 10.
- Empty new lines in help separators synced (Autoconf default separators
  don't include additional empty newline after the separator title);
  so the PHP_HELP_SEPARATOR additional empty line is also removed
  (see './configure --help' output)

build/php.m4

@@ -9,11 +9,8 @@ dnl PHP_HELP_SEPARATOR(title)
 dnl
 dnl Adds separator title into the configure --help display.
 dnl
-AC_DEFUN([PHP_HELP_SEPARATOR],[
-AC_ARG_ENABLE([],[
-$1
-],[])
-])
+AC_DEFUN([PHP_HELP_SEPARATOR], [AC_ARG_ENABLE([], [
+$1], [])])
 
 dnl
 dnl PHP_CONFIGURE_PART(title)
@@ -123,11 +120,14 @@ AC_DEFUN([PHP_CANONICAL_HOST_TARGET],[
 dnl
 dnl PHP_INIT_BUILD_SYSTEM
 dnl
-dnl Creates build directories and Makefile placeholders.
+dnl Initializes PHP build system configuration, creates build directories and
+dnl adds Makefile placeholders.
 dnl
 AC_DEFUN([PHP_INIT_BUILD_SYSTEM],
 [AC_REQUIRE([PHP_CANONICAL_HOST_TARGET])dnl
 php_shtool=$srcdir/build/shtool
+T_MD=$($php_shtool echo -n -e %B)
+T_ME=$($php_shtool echo -n -e %b)
 > Makefile.objects
 > Makefile.fragments
 dnl Run at the end of the configuration, before creating the config.status.

configure.ac

@@ -100,9 +100,6 @@ dnl ----------------------------------------------------------------------------
 
 PHP_INIT_BUILD_SYSTEM
 
-T_MD=`$php_shtool echo -n -e %B`
-T_ME=`$php_shtool echo -n -e %b`
-
 dnl We want this one before the checks, so the checks can modify CFLAGS.
 AS_VAR_IF([CFLAGS],, [auto_cflags=1])
 
@@ -274,7 +271,7 @@ SAPI_SHARED=libs/$SAPI_LIBNAME_SHARED
 SAPI_STATIC=libs/$SAPI_LIBNAME_STATIC
 SAPI_LIBTOOL=libphp.la
 
-PHP_CONFIGURE_PART(Configuring SAPI modules)
+PHP_CONFIGURE_PART([Configuring SAPI modules])
 
 esyscmd(./build/config-stubs sapi)
 
@@ -312,7 +309,7 @@ AS_VAR_IF([enable_zts], [yes], [
 dnl Starting system checks.
 dnl ----------------------------------------------------------------------------
 
-PHP_CONFIGURE_PART(Running system checks)
+PHP_CONFIGURE_PART([Running system checks])
 
 dnl Find sendmail binary.
 PHP_PROG_SENDMAIL
@@ -754,7 +751,7 @@ AS_VAR_IF([PHP_VALGRIND], [no],, [
 
 dnl General settings.
 dnl ----------------------------------------------------------------------------
-PHP_CONFIGURE_PART(General settings)
+PHP_CONFIGURE_PART([General settings])
 
 PHP_HELP_SEPARATOR([General settings:])
 
@@ -1067,7 +1064,6 @@ dnl Extension configuration.
 dnl ----------------------------------------------------------------------------
 
 PHP_HELP_SEPARATOR([[Extensions:
-
   --with-EXTENSION=[shared[,PATH]]
 
     NOTE: Not all extensions can be built as 'shared'.
@@ -1078,7 +1074,7 @@ PHP_HELP_SEPARATOR([[Extensions:
       o foobar package install prefix is /usr/local/foobar/
 ]])
 
-PHP_CONFIGURE_PART(Configuring extensions)
+PHP_CONFIGURE_PART([Configuring extensions])
 
 dnl Check if all enabled by default extensions should be disabled.
 AC_ARG_ENABLE([all],
@@ -1152,7 +1148,7 @@ dnl PEAR
 dnl ----------------------------------------------------------------------------
 
 PHP_HELP_SEPARATOR([PEAR:])
-PHP_CONFIGURE_PART(Configuring PEAR)
+PHP_CONFIGURE_PART([Configuring PEAR])
 
 dnl If CLI is disabled disable PEAR.
 AS_VAR_IF([PHP_CLI], [no], [with_pear=no])
@@ -1192,7 +1188,7 @@ dnl Configuring Zend and TSRM.
 dnl ----------------------------------------------------------------------------
 
 PHP_HELP_SEPARATOR([Zend:])
-PHP_CONFIGURE_PART(Configuring Zend)
+PHP_CONFIGURE_PART([Configuring Zend])
 
 AC_ARG_ENABLE([fiber-asm],
   [AS_HELP_STRING([--disable-fiber-asm],
@@ -1578,7 +1574,7 @@ dnl Libtool creation.
 dnl
 
 PHP_HELP_SEPARATOR([Libtool:])
-PHP_CONFIGURE_PART(Configuring libtool)
+PHP_CONFIGURE_PART([Configuring libtool])
 
 dnl Silence warning: `ar: 'u' modifier ignored since 'D' is the default`
 dnl See https://github.com/php/php-src/pull/3017
@@ -1602,7 +1598,7 @@ PHP_SET_LIBTOOL_VARIABLE([--preserve-dup-deps])
 
 CC=$old_CC
 
-PHP_CONFIGURE_PART(Generating files)
+PHP_CONFIGURE_PART([Generating files])
 
 CXXFLAGS_CLEAN=$CXXFLAGS
 CFLAGS_CLEAN="$CFLAGS \$(PROF_FLAGS)"

scripts/phpize.m4

@@ -139,11 +139,17 @@ PHP_BUILD_SHARED
 dnl Required programs.
 PHP_PROG_AWK
 
+PHP_HELP_SEPARATOR([Extension:])
+PHP_CONFIGURE_PART([Configuring extension])
+
 sinclude(config.m4)
 
 enable_static=no
 enable_shared=yes
 
+PHP_HELP_SEPARATOR([Libtool:])
+PHP_CONFIGURE_PART([Configuring libtool])
+
 dnl Only allow AC_PROG_CXX and AC_PROG_CXXCPP if they are explicitly called (by
 dnl PHP_REQUIRE_CXX). Otherwise AC_PROG_LIBTOOL fails if there is no working C++
 dnl compiler.
@@ -197,6 +203,8 @@ PHP_SUBST([SHELL])
 PHP_SUBST([INSTALL_HEADERS])
 PHP_SUBST([BUILD_CC])
 
+PHP_CONFIGURE_PART([Generating files])
+
 AC_CONFIG_HEADERS([config.h])
 
 AC_CONFIG_COMMANDS_PRE([PHP_PATCH_CONFIG_HEADERS([config.h.in])])