Description:
------------
maybe worth a look

/home/builduser/rpmbuild/BUILD/php-7.1.0/Zend/zend_execute_API.c:1204:4: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]

/home/builduser/rpmbuild/BUILD/php-7.1.0/sapi/apache2handler/sapi_apache2.c:755:21: warning: passing argument 1 of 'ap_hook_child_init' from incompatible pointer type [-Wincompatible-pointer-types]

/home/builduser/rpmbuild/BUILD/php-7.1.0/ext/intl/idn/idn.c:229:4: warning: 'uidna_IDNToASCII_56' is deprecated [-Wdeprecated-declarations]

/home/builduser/rpmbuild/BUILD/php-7.1.0/ext/intl/idn/idn.c:231:4: warning: 'uidna_IDNToUnicode_56' is deprecated [-Wdeprecated-declarations]
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PGO-Build with identical warnings for "make prof-gen" and "make prof-use"

'-m64 -O3 -march=sandybridge -mtune=sandybridge -mavx -mfpmath=sse -msse2avx -fopenmp -pipe -fomit-frame-pointer -fstack-protector --param=ssp-buffer-size=8 -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -g0 -fipa-pta -fira-loop-pressure -fivopts -fmerge-all-constants -fsemantic-interposition -ftree-loop-distribution -ftree-loop-if-convert -ftree-loop-if-convert-stores -ftree-loop-ivcanon -fvect-cost-model=unlimited -fwrapv -minline-all-stringops -fno-align-labels -fno-exceptions -fno-gcse -fno-math-errno -fno-strict-aliasing -Wno-stack-protector -fno-lto -fuse-ld=gold -fuse-linker-plugin -Wa,--noexecstack'