Bug #75852 [NEW]: PECL changes default compiler by changing path

From: dpuglielli at magnitude dot com Operating system: CentOS 7 PHP version: 7.2.1 Package: PECL Bug Type: Bug Bug description:PECL changes default compiler by changing path Description: ------------ When attempting to install a package using PECL, PECL prepends to the default path, which can prevent installation of extensions requiring a more recent compiler. I am running CentOS 7. I installed PHP 7.2 from rpms.remirepo.net using yum. I then updated GCC by running the following commands: yum install centos-release-scl yum install devtoolset-7 scl enable devtoolset-7 bash (from https://www.softwarecollections.org/en/scls/rhscl/devtoolset-7/). I then tried to install SQLSRV using 'pecl install sqlsrv'. It failed at the compilation step with error messages about __builtin_saddl_overflow and __builtin_ssubl_overflow from zend_operators.h not being declared (full compiler output below). Cause of the problem: On CentOS, the default GCC is 4.8.5. PHP 7.2 makes use of built-in integer overflow functions such as __builtin_saddl_overflow, which were only added to GCC in version 5. Downloading an updated GCC using the commands above changes the default path by prepending /opt/rh/devtoolset-7/root/usr/bin to it, which is the location of the updated compiler. However, when running 'pecl install <extension>', PECL prepends /usr/bin to the new path, causing it to use the old gcc executable (4.8) in /usr/bin instead of the newer one. The offending code is line 310 of /usr/share/pear/PEAR/Builder.php: putenv('PATH=' . $this->config->get('bin_dir') . ':' . getenv('PATH')); The result on CentOS/RedHat is that a few extensions, such as SQLSRV, will not compile at all, and others will give warnings about implicit function declarations. A workaround is to download the package file manually using 'pecl download', unzip it, and run 'phpize; ./configure; make; make install;' manually, but this should not be necessary. Test script: --------------- # pecl install sqlsrv Expected result: ---------------- sqlsrv should compile and install without errors. Actual result: -------------- The compiler output from the make stage of installation: running: make /bin/sh /var/tmp/pear-build-davidp9cVJxa/sqlsrv-4.3.0/libtool --mode=compile g++ -std=c++11 -I. -I/var/tmp/sqlsrv -DPHP_ATOM_INC -I/var/tmp/pear-build-davidp9cVJxa/sqlsrv-4.3.0/include -I/var/tmp/pear-build-davidp9cVJxa/sqlsrv-4.3.0/main -I/var/tmp/sqlsrv -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -I/var/tmp/sqlsrv/shared/ -DHAVE_CONFIG_H -std=c++11 -D_FORTIFY_SOURCE=2 -O2 -fstack-protector -c /var/tmp/sqlsrv/conn.cpp -o conn.lo libtool: compile: g++ -std=c++11 -I. -I/var/tmp/sqlsrv -DPHP_ATOM_INC -I/var/tmp/pear-build-davidp9cVJxa/sqlsrv-4.3.0/include -I/var/tmp/pear-build-davidp9cVJxa/sqlsrv-4.3.0/main -I/var/tmp/sqlsrv -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -I/var/tmp/sqlsrv/shared/ -DHAVE_CONFIG_H -std=c++11 -D_FORTIFY_SOURCE=2 -O2 -fstack-protector -c /var/tmp/sqlsrv/conn.cpp -fPIC -DPIC -o .libs/conn.o In file included from /usr/include/php/Zend/zend_types.h:27:0, from /usr/include/php/Zend/zend.h:29, from /usr/include/php/main/php.h:35, from /var/tmp/sqlsrv/shared/core_sqlsrv.h:34, from /var/tmp/sqlsrv/php_sqlsrv.h:25, from /var/tmp/sqlsrv/conn.cpp:20: /usr/include/php/Zend/zend_operators.h: In function 'void fast_long_increment_function(zval*)': /usr/include/php/Zend/zend_operators.h:446:68: error: '__builtin_saddl_overflow' was not declared in this scope if (UNEXPECTED(__builtin_saddl_overflow(Z_LVAL_P(op1), 1, &lresult))) { ^ /usr/include/php/Zend/zend_portability.h:312:52: note: in definition of macro 'UNEXPECTED' # define UNEXPECTED(condition) __builtin_expect(!!(condition), 0) ^ /usr/include/php/Zend/zend_operators.h: In function 'void fast_long_decrement_function(zval*)': /usr/include/php/Zend/zend_operators.h:500:68: error: '__builtin_ssubl_overflow' was not declared in this scope if (UNEXPECTED(__builtin_ssubl_overflow(Z_LVAL_P(op1), 1, &lresult))) { ^ /usr/include/php/Zend/zend_portability.h:312:52: note: in definition of macro 'UNEXPECTED' # define UNEXPECTED(condition) __builtin_expect(!!(condition), 0) ^ /usr/include/php/Zend/zend_operators.h: In function 'void fast_long_add_function(zval*, zval*, zval*)': /usr/include/php/Zend/zend_operators.h:554:80: error: '__builtin_saddl_overflow' was not declared in this scope if (UNEXPECTED(__builtin_saddl_overflow(Z_LVAL_P(op1), Z_LVAL_P(op2), &lresult))) { ^ /usr/include/php/Zend/zend_portability.h:312:52: note: in definition of macro 'UNEXPECTED' # define UNEXPECTED(condition) __builtin_expect(!!(condition), 0) ^ /usr/include/php/Zend/zend_operators.h: In function 'void fast_long_sub_function(zval*, zval*, zval*)': /usr/include/php/Zend/zend_operators.h:657:80: error: '__builtin_ssubl_overflow' was not declared in this scope if (UNEXPECTED(__builtin_ssubl_overflow(Z_LVAL_P(op1), Z_LVAL_P(op2), &lresult))) { ^ /usr/include/php/Zend/zend_portability.h:312:52: note: in definition of macro 'UNEXPECTED' # define UNEXPECTED(condition) __builtin_expect(!!(condition), 0) ^ make: *** [conn.lo] Error 1 ERROR: `make' failed -- Edit bug report at https://bugs.php.net/bug.php?id=75852&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75852&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75852&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75852&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75852&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75852&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75852&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75852&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75852&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75852&r=support Expected behavior: https://bugs.php.net/fix.php?id=75852&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75852&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75852&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75852&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75852&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75852&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75852&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75852&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75852&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75852&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75852&r=mysqlcfg