Bug #74149 [Com]: SAPI application linking to PHP static library can't call zend_signal_startup()

Edit report at https://bugs.php.net/bug.php?id=74149&edit=1 ID: 74149 Comment by: l at p dot com Reported by: sathya at laufers dot net Summary: SAPI application linking to PHP static library can't call zend_signal_startup() Status: Closed Type: Bug Package: Compile Failure Operating System: GNU/Linux PHP Version: 7.1.2 Block user comment: N Private report: N New Comment: wewef .i. Previous Comments: ------------------------------------------------------------------------ [2017-03-09 07:44:55] krakjoe@php.net Automatic comment on behalf of krakjoe Revision: http://git.php.net/?p=php-src.git;a=commit;h=8599ce4f18758d4aeff494366d884d4bb7dac2a2 Log: Fix bug #74149 static embed SAPI linkage error ------------------------------------------------------------------------ [2017-02-22 15:12:59] sathya at laufers dot net Description: ------------ A C++ SAPI application linking to PHP 7.1 compiled as static embedded SAPI library can't compile as the mandatory function "zend_signal_startup()" is not wrapped in 'extern "C" {' and therefore not accessible. This is the same issue as in "Bug #71041". I'm creating a new bug report, because Zend signals are now enabled by default and even with disabling them using "--disable-zend-signals" it doesn't work (see "additional remark"). Regarding the comment in the other bug report: > The only place that this function should be called is in the SAPI layer, since all usable > SAPI's are distributed with PHP, there doesn't seem to be a legitimate need to export the > symbol. I don't agree. Most people using the static embedded library to integrate PHP into their programs will stumble upon this problem. Additional remark: Using the configure option "--disable-zend-signals" the program compiles but crashes with signal 6 as "zend_signal_activate()" is still being called by "php_request_startup()" - but with uninitialized variables: #0 0x00007f25f672f428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54 #1 0x00007f25f673102a in __GI_abort () at abort.c:89 #2 0x000000000044cb21 in Debug::safe_abort () at DeathHandler.cpp:387 #3 Debug::DeathHandler::HandleSignal (sig=<optimized out>, secret=0x7f25ef19c100) at DeathHandler.cpp:573 #4 <signal handler called> #5 0x000000000069c717 in memcpy (__len=1040, __src=0x12f2720 <global_orig_handlers>, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:53 #6 zend_signal_activate () at /usr/src/user/php-7.1.2/Zend/zend_signal.c:313 #7 0x000000000060309f in php_request_startup () at /usr/src/user/php-7.1.2/main/main.c:1640 Test script: --------------- <?php //Not applicable ?> Expected result: ---------------- Successful linking of PHP 7.1 static embedded library. Actual result: -------------- Error during linking: libscriptengine.a(libscriptengine_a-php_sapi.o): In function `php_xxx_init()': xxx/php_sapi.cpp:1787: undefined reference to `zend_signal_startup()' collect2: error: ld returned 1 exit status make[2]: *** [xxx] Fehler 1 Makefile:635: die Regel für Ziel „xxx“ scheiterte make[1]: *** [all-recursive] Fehler 1 make: *** [all] Fehler 2 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74149&edit=1