Hi Peter,
* Peter O'Gorman wrote on Wed, Jan 30, 2008 at 09:16:38AM CET:
> Not much response last time, here we go again.
Sorry about the delay.
> Ok to apply to branch-1-5 and forward port to HEAD?
Nits below.
FWIW, on Debian x86_64, this patch causes for me /usr/lib to appear
in the front, with both 64bit mode (./configure) and 32bit mode
(./configure CPPFLAGS=-m32 LDFLAGS=-m32). For Debian, the latter
is wrong, /usr/lib64 is a symlink to /usr/lib. Before the patch,
both modes looked better.
A general question: do all these changes to multilib path searching
not also increase the set of paths we search? Because that will
rather significantly affect libtool performance in some cases.
> +# Need LDFLAGS, but not with -L.
> +_lt_ldflags=
> +for _ld_flag in "$LDFLAGS"; do
> + case "$_ld_flag" in
> + -L*) ;;
> + *) _lt_ldflags="$_ld_flag $_lt_ldflags" ;;
> + esac
> +done
> +echo 'int main() { return 1;}' > conftest.c
> +_lt_verbose_search_libs=`$CC $CFLAGS $CPPFLAGS $_lt_ldflags -o conftest -v
> conftest.c 2>&1 | awk '
Please list CPPFLAGS before CFLAGS.
> +BEGIN {lt_space=0;} /-L/ {
> + for (lt_x=1; lt_x <= NF; lt_x++) {
> + if ( substr($lt_x,1,2) == "-L") {
> + lt_y=substr($lt_x,3,length($lt_x) -2);
> + if (lt_space > 0) { print " "; }
> + print lt_y;
> + lt_space++;
> + }
> + }
> +}' | awk '
> +BEGIN {RS=" "; FS="/|\n";} {
For Solaris awk, FS must contain one character only.
You could AC_REQUIRE([AC_PROG_AWK]) and use $AWK.
Hmm, I see that this idiom was used before this patch already.
Still, it will not do TRT on Solaris.
Wait... this whole awk processing of paths used to be GNU/Linux
only, now it is for all systems, but $GCC only.
> + lt_foo="";
> + lt_count=0;
> + for (lt_i = NF; lt_i > 0; lt_i--) {
> + if ($lt_i != "" && $lt_i != ".") {
> + if ($lt_i == "..") {
> + lt_count++;
> + } else {
> + if (lt_count == 0) {
> + lt_foo="/" $lt_i lt_foo;
> + } else {
> + lt_count--;
> + }
> + }
> + }
> + }
> + if (lt_foo != "") { lt_freq[[lt_foo]]++; }
> + if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
> +}'`
> +rm -rf conftest*
> +for _lt_verbose_search_lib in $_lt_verbose_search_libs; do
> + case " $sys_lib_search_path_spec " in
> + *" "$_lt_verbose_search_lib" "*) ;;
> + *) sys_lib_search_path_spec="$_lt_verbose_search_lib
> $sys_lib_search_path_spec" ;;
> + esac
> +done
> +])
