On 10 March 2012 00:39, DJ Delorie <d...@redhat.com> wrote:
>
>> > Ping - http://gcc.gnu.org/ml/gcc-patches/2012-03/msg00549.html
>>
>> And now really add Paolo and DJ.
>
> + [.type foo, '$target_type_format_char'gnu_unique_object],,
>
> This un-quoting looks incorrect if you don't know what's going on
> under the hood, but I don't see a clean way around it. A suitable
> comment would be appropriate.
Thanks for the quick review - I thought however
it was kind of a "standard" workaround for this issue
having seen this elsewhere in the same file - given this is used
in multiple places/
>
> +target_type_format_char="@"
> + target_type_format_char="%"
>
> Since the string always has "special" characters, it's likely that
> single quotes are more appropriate here. The two characters in the
> patch don't care, but some future porter might naively do "$" and
> wonder why (or worse, not wonder why) it doesn't work right.
Fair point - done.
>
> Other than that it looks OK to me, assuming you tested it on all the
> relevent targets (i.e. arm and not-arm).
I tested x86_64-linux-gnu with a bootstrap and that showed identical
auto-host.h to the previous run and thus that appeared to be fine.
(This is a target that uses the default '@') .. On ARM I've done a
full bootstrap and auto-host.h shows the appropriate macro defined (
and it does with this version of the patch as well). Are there any
other targets you'd suggest ?
Assuming all tests pass is this version better ?
cheers
Ramana
2012-03-11 Ramana Radhakrishnan <ramana.radhakrish...@linaro.org>
* config.gcc (target_type_format_char): New. Document it. Set it for
arm*-*-* .
* configure.ac (gnu_unique_option): Use target_type_format_char in test.
Comment rationale.
* configure: Regenerate .
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 99f0b47..a769d0c 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -184,6 +184,11 @@
# the --with-sysroot configure option or the
# --sysroot command line option is used this
# will be relative to the sysroot.
+# target_type_format_char
+# The default character to be used for formatting
+# the attribute in a
+# .type symbol_name, ${t_t_f_c}<property>
+# directive.
# The following variables are used in each case-construct to build up the
# outgoing variables:
@@ -235,6 +240,7 @@ target_gtfiles=
need_64bit_hwint=
need_64bit_isa=
native_system_header_dir=/usr/include
+target_type_format_char='@'
# Don't carry these over build->host->target. Please.
xm_file=
@@ -321,6 +327,7 @@ am33_2.0-*-linux*)
arm*-*-*)
cpu_type=arm
extra_headers="mmintrin.h arm_neon.h"
+ target_type_format_char='%'
c_target_objs="arm-c.o"
cxx_target_objs="arm-c.o"
extra_options="${extra_options} arm/arm-tables.opt"
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 39302ad..4a534a1 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -4188,7 +4188,9 @@ Valid choices are 'yes' and 'no'.]) ;;
esac],
[gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
[elf,2,19,52],,
- [.type foo, @gnu_unique_object],,
+#We have to unquote here to reuse the variable from
+#config.gcc.
+ [.type foo, '$target_type_format_char'gnu_unique_object],,
# Also check for ld.so support, i.e. glibc 2.11 or higher.
[[if test x$host = x$build -a x$host = x$target &&
ldd --version 2>/dev/null &&
