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release: always link librt for glibc back-compat builds

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glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to
link in anyway for back-compat.

Fixes #7420
This commit is contained in:
Cory Fields 2016-01-26 22:36:39 -05:00
parent f3d3eaf78e
commit a8ce872118
1 changed files with 6 additions and 3 deletions
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9
configure.ac
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@ -411,6 +411,10 @@ AX_GCC_FUNC_ATTRIBUTE([dllimport])
if test x$use_glibc_compat != xno; then
#glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
#in anyway for back-compat.
AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(lib missing))
#__fdelt_chk's params and return type have changed from long unsigned int to long int.
# See which one is present here.
AC_MSG_CHECKING(__fdelt_chk type)
@ -424,7 +428,8 @@ if test x$use_glibc_compat != xno; then
[ fdelt_type="long int"])
AC_MSG_RESULT($fdelt_type)
AC_DEFINE_UNQUOTED(FDELT_TYPE, $fdelt_type,[parameter and return value type for __fdelt_chk])
else
AC_SEARCH_LIBS([clock_gettime],[rt])
fi
if test x$TARGET_OS != xwindows; then
@ -491,8 +496,6 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
[ AC_MSG_RESULT(no)]
)
AC_SEARCH_LIBS([clock_gettime],[rt])
AC_MSG_CHECKING([for visibility attribute])
AC_LINK_IFELSE([AC_LANG_SOURCE([
int foo_def( void ) __attribute__((visibility("default")));