Bug #79841 [Csd]: Syntax error in configure / unescaped "[]" in php.m4

Edit report at https://bugs.php.net/bug.php?id=79841&edit=1 ID: 79841 Updated by: nikic@php.net Reported by: rainer dot jung at kippdata dot de Summary: Syntax error in configure / unescaped "[]" in php.m4 Status: Closed Type: Bug Package: *Compile Issues Operating System: Any using "configure" PHP Version: 8.0.0alpha2 -Assigned To: +Assigned To: nikic Block user comment: N Private report: N New Comment: I've fixed this in master, but I'm not seeing any any autoconf code using [ -z ] on 7.4. Previous Comments: ------------------------------------------------------------------------ [2020-07-13 07:41:11] nikic@php.net Automatic comment on behalf of nikita.ppv@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=86e2b7bb70131b48636cded57e5bc62b81b79865 Log: Fixed bug #79841 ------------------------------------------------------------------------ [2020-07-13 06:44:10] rainer dot jung at kippdata dot de Description: ------------ "configure" warns: ./configure: line 5571: -z: command not found The script contains wrong syntax: 5571 -z "$php_bison_version" && php_bison_version=0.0.0 ... 5676 -z "$php_re2c_version" && php_re2c_version=0.0.0 The root cause is in file build/php.m4 introduced in commit https://github.com/php/php-src/commit/fe2afef36fc78c267133ddd403f48e0ee799efbc (#78750, GH-5681): 1787 [ -z "$php_bison_version" ] && php_bison_version=0.0.0 ... 1852 [ -z "$php_re2c_version" ] && php_re2c_version=0.0.0 The square brackets need escaping in the m4 macro files. Directly below those lines a different syntax is used. Therefore I suggest to replace the two lines as follows: if test -z "$php_bison_version" ; then php_bison_version=0.0.0 fi and if test -z "$php_re2c_version" ; then php_re2c_version=0.0.0 fi Note that the problematic change also was back-ported to PHP 7.4 after 7.4.8 (https://github.com/php/php-src/pull/5681/commits/94c76e5e964aceb7e40fc6a15cf0ce247585c154). It should be fixed there as well before the next PHP 7.4 release. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79841&edit=1