| dnl -------------------------------------------------------------------------- |
| dnl PA_OPTION_LTO(default) |
| dnl |
| dnl Try to enable link-time optimization. Enable it by default if |
| dnl the "default" argument is set to "yes"; currently the default is "no", |
| dnl but that could change in the future -- to force disabled by default, |
| dnl set to "no". |
| dnl -------------------------------------------------------------------------- |
| AC_DEFUN([PA_OPTION_LTO], |
| [PA_ARG_BOOL([lto], |
| [Try to enable link-time optimization for this compiler], |
| [$1], |
| [PA_ADD_LANGFLAGS([-flto]) |
| dnl Note: we use _PROG rather than _TOOL since we are prepending the full |
| dnl CC name which ought to already contain the host triplet if needed |
| ccbase=`echo "$CC" | awk '{ print $1; }'` |
| AC_CHECK_PROGS(CC_AR, [${ccbase}-ar], [$ac_cv_prog_AR]) |
| AR="$CC_AR" |
| AC_CHECK_PROGS(CC_RANLIB, [${ccbase}-ranlib], [$ac_cv_prog_RANLIB]) |
| RANLIB="$CC_RANLIB"])]) |
