Bug #69729 [NEW]: unresolved externals when compiling with VC 2015

From: phpdev at ehrhardt dot nl Operating system: Windows with VC14 PHP version: master-Git-2015-05-29 (Git) Package: Compile Failure Bug Type: Bug Bug description:unresolved externals when compiling with VC 2015 Description: ------------ I am getting lots of unresolved externals when I try to compile PHP7 with VC14 (VC 2015). I started with a clean sheet and VC 2015 Pro RC. I used the deps from http://windows.php.net/downloads/php-sdk/deps-5.6-vc11-x86.7z as starting point. With those deps a lot of extensions did not compile. I recompiled mcrypt, iconv, xml2, ssleay32, libeay32, ssh2, curl, xpm, zlib, jpeg, png, vpx, libbz2, netsnmp (all x86 vc14) to get rid of many problems. But I was really surprised recompilation if the libs was needed. Some still remain, like php_gmp.dll, which fails on the mpir_a.lib in the VC11 deps for 5.6. Error messages below. Test script: --------------- Recreating build dirs Recreating build dirs Recreating build dirs libiconv_a.lib(iconv1.obj) : MSIL .netmodule or module compiled with /GL found; restarting link with /LTCG; add /LTCG to the link command line to improve linker performance Creating library C:\php-sdk\php70dev\Release_TS\php7ts.lib and object C:\php-sdk\php70dev\Release_TS\php7ts.exp Generating code Finished generating code Creating library C:\php-sdk\php70dev\Release_TS\php_gmp.lib and object C:\php-sdk\php70dev\Release_TS\php_gmp.exp LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library mpir_a.lib(memory.obj) : error LNK2019: unresolved external symbol ___iob_func referenced in function ___gmp_default_allocate mpir_a.lib(assert.obj) : error LNK2001: unresolved external symbol ___iob_func C:\php-sdk\php70dev\Release_TS\php_gmp.dll : fatal error LNK1120: 1 unresolved externals Expected result: ---------------- I expected that VC14 would build with the deps that work fine for VC11 and VC12 Actual result: -------------- Broken compilation for lots of extensions (and even the core before I recompiled some libs). -- Edit bug report at https://bugs.php.net/bug.php?id=69729&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69729&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69729&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69729&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69729&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69729&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69729&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69729&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69729&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69729&r=support Expected behavior: https://bugs.php.net/fix.php?id=69729&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69729&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69729&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69729&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69729&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69729&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69729&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69729&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69729&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69729&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69729&r=mysqlcfg