Bug #80402 [Opn]: configure filtering out -lpthread

Edit report at https://bugs.php.net/bug.php?id=80402&edit=1 ID: 80402 Updated by: nikic@php.net Reported by: bjornar dot ness at gmail dot com Summary: configure filtering out -lpthread Status: Open Type: Bug Package: *Configuration Issues Operating System: linux PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Ah no, that one was about -pthread, not -lpthread. I presume lpthread is getting stripped out by _PHP_ADD_LIBRARY_SKELETON. That logic was originally added 20 years ago with: https://github.com/php/php-src/commit/f9e375f493a1aeacbbcc8f2f00880d05b4ba7aaf I have no idea why it is there. Previous Comments: ------------------------------------------------------------------------ [2020-11-24 11:06:02] nikic@php.net Which PHP version are you using? (In particular wondering if you have https://github.com/php/php-src/commit/c518932c0326a938f0fd0254f2adb03b1cddfbca, which is in 7.4.) ------------------------------------------------------------------------ [2020-11-23 01:19:52] bjornar dot ness at gmail dot com The only, but ugly, way I have managed to find around this atm is: LIBS="-lpthread" LDFLAGS="-Wl,--start-group" /path/to/configure ------------------------------------------------------------------------ [2020-11-23 00:20:51] bjornar dot ness at gmail dot com Description: ------------ php's configure script has multiple places where it filters out -lpthread from $LIBS before ac_fn_c_try_link This is likely ok for shared, but causes problems with static libs. One example of this is when building openssl static. # pkg-config openssl --libs -L/usr/src/php-build/install/OpenSSL_1_1_1h/lib -lssl -lz -lcrypto -lpthread -ldl Problem is, when configure tries to check this rule, it filters out some libs from what it was told by pkg-config: (looping through $XXXX_LIBS) case $ac_ii in c|c_r|pthread*) ;; *) LIBS="$LIBS -l$ac_ii" ;; esac (end loop) ac_fn_c_try_link ac_fn_c_try_link basically does: $CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5 and in my case then, results in the following libs: -lssl -lz -lcrypto -ldl note -lpthread missing, and the test failing. I have not managed to find a way around this without modifying the configure file, adding -lpthread where it needs to be. The rest of the actual build is just fine after manually adding -lpthread to just the relevant tests. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80402&edit=1