[PHP-CVS] com php-src: Remove PHP_CHECK_GCC_ARG(): UPGRADING.INTERNALS build/php.m4 configure.ac

Hi Nikita,

This is unfortunately a breaking change. In my config.m4 file for Xdebug
I have:

AC_MSG_CHECKING([Check for supported PHP versions])
PHP_XDEBUG_FOUND_VERSION=${PHP_CONFIG} --version
PHP_XDEBUG_FOUND_VERNUM=echo "${PHP_XDEBUG_FOUND_VERSION}" | $AWK 'BEGIN { FS = "."; } { printf "%d", ([$]1 * 100 + [$]2) * 100 + [$]3;}'
if test "$PHP_XDEBUG_FOUND_VERNUM" -lt "70100"; then
AC_MSG_ERROR([not supported. Need a PHP version >= 7.1.0 and < 8.0.0 (found $PHP_XDEBUG_FOUND_VERSION)])
else
if test "$PHP_XDEBUG_FOUND_VERNUM" -ge "80000"; then
AC_MSG_ERROR([not supported. Need a PHP version >= 7.1.0 and < 8.0.0 (found $PHP_XDEBUG_FOUND_VERSION)])
else
AC_MSG_RESULT([supported ($PHP_XDEBUG_FOUND_VERSION)])
fi
fi

That makes sure that Xdebug 2.9.x can't be compiled with PHP 8, but with
a user friendly error.

The change that you've made with this commit means that compiling this
unsupported version with PHP 8 instead of a user friendly message, shows
a hard to explain/google error upon phpize:

checking whether to enable Xdebug developer build flags... no
/tmp/pear/temp/xdebug/configure: line 4459: syntax error near unexpected token -Wbool-conversion,' /tmp/pear/temp/xdebug/configure: line 4459: PHP_CHECK_GCC_ARG(-Wbool-conversion, _MAINTAINER_CFLAGS="$_MAINTAINER_CFLAGS -Wbool-conversion")'
ERROR: `/tmp/pear/temp/xdebug/configure --with-php-config=/usr/local/php/master/bin/php-config' failed

Would it perhaps to be wise to leave this change until 8.1, and have it
throw a deprecation warning in PHP 8.0.x instead? It's not like keeping
this around for another year is going to hurt us much.

cheers,
Derick

Commit: e2f39f84e2366bb9aee16fe248aad893c0aa6380
Author: Nikita Popov nikita.ppv@gmail.com Wed, 29 Jul 2020 12:45:26 +0200
Parents: 3a29da022b80c8468ea0f14402b23d716cb37775
Branches: master

Link: http://git.php.net/?p=php-src.git;a=commitdiff;h=e2f39f84e2366bb9aee16fe248aad893c0aa6380

Log:
Remove PHP_CHECK_GCC_ARG()

In favor of AX_CHECK_COMPILE_FLAG(), which we bundle since at least
PHP 7.

Closes GH-5904.

Changed paths:
M UPGRADING.INTERNALS
M build/php.m4
M configure.ac

Diff:
diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index bec30c8314..6985650801 100644
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -214,7 +214,11 @@ PHP 8.0 INTERNALS UPGRADE NOTES
b. Unix build system changes

 1.  --enable-maintainer-zts is renamed --enable-zts for parity with Windows

•    and as recognition that ZTS is not a "maintainer" or experimental feature.
  

•    and as recognition that ZTS is not a "maintainer" or experimental
  

•    feature.
  

• 2. The PHP_CHECK_GCC_ARG() m4 macro has been removed in favor of

•    AX_CHECK_COMPILE_FLAG().
  

  c. Windows build system changes

diff --git a/build/php.m4 b/build/php.m4
index a5b18c15aa..bdc02573ac 100644
--- a/build/php.m4
+++ b/build/php.m4
@@ -305,30 +305,6 @@ fi
])

dnl
-dnl PHP_CHECK_GCC_ARG(arg, action-if-found, action-if-not-found)
-dnl
-AC_DEFUN([PHP_CHECK_GCC_ARG],[

• gcc_arg_name=[ac_cv_gcc_arg]translit($1,A-Z=-,a-z__)
• AC_CACHE_CHECK([whether $CC supports $1], [ac_cv_gcc_arg]translit($1,A-Z=-,a-z__), [
• echo 'void somefunc() { };' > conftest.c
• cmd='$CC $1 -c conftest.c'
• if eval $cmd 2>&1 | $EGREP -e $1 >/dev/null ; then
• ac_result=no
• else
• ac_result=yes
• fi
• eval $gcc_arg_name=$ac_result
• rm -f conftest.*
• ])
• if eval test "$$gcc_arg_name" = "yes"; then
• $2
• else
• :
• $3
• fi
  -])

-dnl
dnl PHP_LIBGCC_LIBPATH(gcc)
dnl
dnl Stores the location of libgcc in libgcc_libpath.
diff --git a/configure.ac b/configure.ac
index 3e438c5fef..45614f8581 100644
--- a/configure.ac
+++ b/configure.ac
@@ -224,10 +224,8 @@ case $host_alias in
;;
darwin)
if test -n "$GCC"; then

•  PHP_CHECK_GCC_ARG(-no-cpp-precomp, gcc_no_cpp_precomp=yes)
  

•  if test "$gcc_no_cpp_precomp" = "yes"; then
  

•    CPPFLAGS="$CPPFLAGS -no-cpp-precomp"
  

•  fi
  

•  AX_CHECK_COMPILE_FLAG([-no-cpp-precomp],
  

•                        [CPPFLAGS="$CPPFLAGS -no-cpp-precomp"])
  

  fi
  ;;
  mips)

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