Merge #13177: GCC-7 and glibc-2.27 back compat code

253f592909 Add stdin, stdout, stderr to ignored export list (Chun Kuan Lee)
fc6a9f2ab1 Use IN6ADDR_ANY_INIT instead of in6addr_any (Cory Fields)
908c1d7745 GCC-7 and glibc-2.27 compat code (Chun Kuan Lee)

Pull request description:

  The `__divmoddi4` code was modified from https://github.com/gcc-mirror/gcc/blob/master/libgcc/libgcc2.c . I manually find the older glibc version of log2f by objdump, use `.symver` to specify the certain version.

Tree-SHA512: e8d875652003618c73e019ccc420e7a25d46f4eaff1c7a1a6bfc1770b3b46f074b368b2cb14df541b5ab124cca41dede4e28fe863a670589b834ef6b8713f9c4
This commit is contained in:
Wladimir J. van der Laan
2018-07-12 17:44:13 +02:00
5 changed files with 51 additions and 2 deletions

View File

@@ -651,6 +651,8 @@ if test x$use_glibc_compat != xno; then
[ fdelt_type="long int"])
AC_MSG_RESULT($fdelt_type)
AC_DEFINE_UNQUOTED(FDELT_TYPE, $fdelt_type,[parameter and return value type for __fdelt_chk])
AX_CHECK_LINK_FLAG([[-Wl,--wrap=__divmoddi4]], [COMPAT_LDFLAGS="$COMPAT_LDFLAGS -Wl,--wrap=__divmoddi4"])
AX_CHECK_LINK_FLAG([[-Wl,--wrap=log2f]], [COMPAT_LDFLAGS="$COMPAT_LDFLAGS -Wl,--wrap=log2f"])
else
AC_SEARCH_LIBS([clock_gettime],[rt])
fi
@@ -1351,6 +1353,7 @@ AC_SUBST(DEBUG_CPPFLAGS)
AC_SUBST(WARN_CXXFLAGS)
AC_SUBST(NOWARN_CXXFLAGS)
AC_SUBST(DEBUG_CXXFLAGS)
AC_SUBST(COMPAT_LDFLAGS)
AC_SUBST(ERROR_CXXFLAGS)
AC_SUBST(GPROF_CXXFLAGS)
AC_SUBST(GPROF_LDFLAGS)