diff options
Diffstat (limited to 'm4/lib-ld.m4')
| -rw-r--r-- | m4/lib-ld.m4 | 142 |
1 files changed, 85 insertions, 57 deletions
diff --git a/m4/lib-ld.m4 b/m4/lib-ld.m4 index 6209de6..8b8a26e 100644 --- a/m4/lib-ld.m4 +++ b/m4/lib-ld.m4 @@ -1,5 +1,5 @@ -# lib-ld.m4 serial 6 -dnl Copyright (C) 1996-2003, 2009-2016 Free Software Foundation, Inc. +# lib-ld.m4 serial 7 +dnl Copyright (C) 1996-2003, 2009-2017 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -47,73 +47,101 @@ if test "${PATH_SEPARATOR+set}" != set; then } fi -ac_prog=ld -if test "$GCC" = yes; then - # Check if gcc -print-prog-name=ld gives a path. +if test -n "$LD"; then + AC_MSG_CHECKING([for ld]) +elif test "$GCC" = yes; then AC_MSG_CHECKING([for ld used by $CC]) - case $host in - *-*-mingw*) - # gcc leaves a trailing carriage return which upsets mingw - ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; - *) - ac_prog=`($CC -print-prog-name=ld) 2>&5` ;; - esac - case $ac_prog in - # Accept absolute paths. - [[\\/]]* | ?:[[\\/]]*) - re_direlt='/[[^/]][[^/]]*/\.\./' - # Canonicalize the pathname of ld - ac_prog=`echo "$ac_prog"| sed 's%\\\\%/%g'` - while echo "$ac_prog" | grep "$re_direlt" > /dev/null 2>&1; do - ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"` - done - test -z "$LD" && LD="$ac_prog" - ;; - "") - # If it fails, then pretend we aren't using GCC. - ac_prog=ld - ;; - *) - # If it is relative, then search for the first ld in PATH. - with_gnu_ld=unknown - ;; - esac elif test "$with_gnu_ld" = yes; then AC_MSG_CHECKING([for GNU ld]) else AC_MSG_CHECKING([for non-GNU ld]) fi -AC_CACHE_VAL([acl_cv_path_LD], -[if test -z "$LD"; then - acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR - for ac_dir in $PATH; do - IFS="$acl_save_ifs" - test -z "$ac_dir" && ac_dir=. - if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then - acl_cv_path_LD="$ac_dir/$ac_prog" - # Check to see if the program is GNU ld. I'd rather use --version, - # but apparently some variants of GNU ld only accept -v. - # Break only if it was the GNU/non-GNU ld that we prefer. - case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in - *GNU* | *'with BFD'*) - test "$with_gnu_ld" != no && break - ;; - *) - test "$with_gnu_ld" != yes && break - ;; +if test -n "$LD"; then + # Let the user override the test with a path. + : +else + AC_CACHE_VAL([acl_cv_path_LD], + [ + acl_cv_path_LD= # Final result of this test + ac_prog=ld # Program to search in $PATH + if test "$GCC" = yes; then + # Check if gcc -print-prog-name=ld gives a path. + case $host in + *-*-mingw*) + # gcc leaves a trailing carriage return which upsets mingw + acl_output=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;; + *) + acl_output=`($CC -print-prog-name=ld) 2>&5` ;; + esac + case $acl_output in + # Accept absolute paths. + [[\\/]]* | ?:[[\\/]]*) + re_direlt='/[[^/]][[^/]]*/\.\./' + # Canonicalize the pathname of ld + acl_output=`echo "$acl_output" | sed 's%\\\\%/%g'` + while echo "$acl_output" | grep "$re_direlt" > /dev/null 2>&1; do + acl_output=`echo $acl_output | sed "s%$re_direlt%/%"` + done + # Got the pathname. No search in PATH is needed. + acl_cv_path_LD="$acl_output" + ac_prog= + ;; + "") + # If it fails, then pretend we aren't using GCC. + ;; + *) + # If it is relative, then search for the first ld in PATH. + with_gnu_ld=unknown + ;; esac fi - done - IFS="$acl_save_ifs" -else - acl_cv_path_LD="$LD" # Let the user override the test with a path. -fi]) -LD="$acl_cv_path_LD" + if test -n "$ac_prog"; then + # Search for $ac_prog in $PATH. + acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR + for ac_dir in $PATH; do + IFS="$acl_save_ifs" + test -z "$ac_dir" && ac_dir=. + if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then + acl_cv_path_LD="$ac_dir/$ac_prog" + # Check to see if the program is GNU ld. I'd rather use --version, + # but apparently some variants of GNU ld only accept -v. + # Break only if it was the GNU/non-GNU ld that we prefer. + case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in + *GNU* | *'with BFD'*) + test "$with_gnu_ld" != no && break + ;; + *) + test "$with_gnu_ld" != yes && break + ;; + esac + fi + done + IFS="$acl_save_ifs" + fi + case $host in + *-*-aix*) + AC_EGREP_CPP([yes], + [#if defined __powerpc64__ || defined _ARCH_PPC64 + yes + #endif + ], + [# The compiler produces 64-bit code. Add option '-b64' so that the + # linker groks 64-bit object files. + case "$acl_cv_path_LD " in + *" -b64 "*) ;; + *) acl_cv_path_LD="$acl_cv_path_LD -b64" ;; + esac + ], []) + ;; + esac + ]) + LD="$acl_cv_path_LD" +fi if test -n "$LD"; then AC_MSG_RESULT([$LD]) else AC_MSG_RESULT([no]) + AC_MSG_ERROR([no acceptable ld found in \$PATH]) fi -test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH]) AC_LIB_PROG_LD_GNU ]) |