Please excuse the mixing of two actually independent changes!
I'll split them up on request, but I thought them small enough
(and being neighbors in the same diff chunk) that it didn't
matter.
The first part, setting cache-id variables, is because before,
without setting the cache-id variable, you get this
configure-time output:
...
checking for .previous assembler directive...
checking for .popsection assembler directive...
checking for section attributes...
...
With this patch:
checking for .previous assembler directive... yes
checking for .popsection assembler directive... yes
checking for section attributes... yes
The second part updates the "dollar prefix" (what target has
them?) test to also handle _-prefixed symbols. The rename is to
make the test reflect the effect of the test better; controlling
the __SYMBOL_PREFIX config macro.
The configure output difference is:
checking for function prefix... no
compared to:
checking for symbol prefix... _
I have an update for libnosys/warning.h to make use of the
setting for ELF targets coming next.
(diff -u seemed a little more readable than diff -c)
2005-01-16 Hans-Peter Nilsson <hp@axis.com>
* libnosys/configure.in (libc_cv_asm_previous_directive): Set
cache-id variable.
(libc_cv_asm_popsection_directive): Ditto.
(libc_cv_section_attributes): Ditto.
(libc_symbol_prefix): Rename from libc_dollar_prefix. Check for
"_" as well, and set __SYMBOL_PREFIX accordingly.
* libnosys/configure: Regenerate.
Index: configure.in
===================================================================
RCS file: /cvs/src/src/libgloss/libnosys/configure.in,v
retrieving revision 1.3
diff -c -p -u -p -r1.3 configure.in
cvs diff: conflicting specifications of output style
--- configure.in 11 May 2002 20:48:04 -0000 1.3
+++ configure.in 16 Jan 2005 13:49:36 -0000
@@ -137,53 +139,63 @@ case "${target}" in
AC_CACHE_CHECK(for .previous assembler directive,
libc_cv_asm_previous_directive, [dnl
+ libc_cv_asm_previous_directive=no
cat > conftest.s <<EOF
.section foo_section
.previous
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
+ libc_cv_asm_previous_directive=yes
AC_DEFINE(HAVE_ASM_PREVIOUS_DIRECTIVE)
fi
rm -f conftest*])
AC_CACHE_CHECK(for .popsection assembler directive,
libc_cv_asm_popsection_directive, [dnl
+ libc_cv_asm_popsection_directive=no
cat > conftest.s <<EOF
.pushsection foo_section
.popsection
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AC_FD_CC); then
+ libc_cv_asm_popsection_directive=yes
AC_DEFINE(HAVE_ASM_POPSECTION_DIRECTIVE)
fi
rm -f conftest*])
AC_CACHE_CHECK(for section attributes,
libc_cv_section_attributes, [dnl
+ libc_cv_section_attributes=no
cat > conftest.c <<EOF
int secttest __attribute__ ((section (".gnu.warning.secttest"))) = 10;
int main() {}
EOF
if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.c 1>&AC_FD_CC); then
+ libc_cv_section_attributes=yes
AC_DEFINE(HAVE_SECTION_ATTRIBUTES)
fi
rm -f conftest*])
;;
esac
-AC_CACHE_CHECK(for function prefix, libc_dollar_prefix, [dnl
+AC_CACHE_CHECK(for symbol prefix, libc_symbol_prefix, [dnl
cat > conftest.c <<\EOF
foo () { }
EOF
dnl
+libc_symbol_prefix=none
if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "\$foo" > /dev/null]);
then
- libc_dollar_prefix=yes
+ libc_symbol_prefix='$'
else
- libc_dollar_prefix=no
+ if AC_TRY_COMMAND([${CC-cc} -S conftest.c -o - | fgrep "_foo" > /dev/null]);
+ then
+ libc_symbol_prefix=_
+ fi
fi
rm -f conftest* ])
-if test $libc_dollar_prefix = yes ; then
- AC_DEFINE(__SYMBOL_PREFIX, "$")
+if test $libc_symbol_prefix != none; then
+ AC_DEFINE_UNQUOTED(__SYMBOL_PREFIX, "$libc_symbol_prefix")
else
AC_DEFINE(__SYMBOL_PREFIX, "")
fi
brgds, H-P