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Avoid a recursive make to speed things up a bit.
A nios2-elf build shows installed objects & libs produce same code.
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Depending on the processing order of rules when installing in parallel,
these install rules might be processed before some other rule happens
to create the respective dirs. Make sure each one creates the needed
dirs before installing into them.
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For arches that had their configure merged into the top-level, make
sure they don't still depend on a subdir configure script that no
longer exists. I had cleaned this up for some of the subdirs, but
these got lost in the shuffle.
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For about half the ports, we don't need a subdir configure script.
They're using the config/default.m[ht] rules, and they aren't doing
any unique configure tests, so they exist just to pass top-level
settings down to create the arch Makefile. We can just as easily
do that from the top-level Mkaefile directly and skip configure.
Most of the remaining configure scripts could be migrated up to
the top-level too, but that would require care in each subdir.
So let's be lazy and put that off to another day.
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Use standard AC_MSG_WARN macro in the top-level configure, and delete
the message from all the subdirs. There's no need to issue this more
than once per libgloss build.
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The newlib & libgloss dirs are already generated using autoconf-2.69.
To avoid merging new code and/or accidental regeneration using diff
versions, leverage config/override.m4 to pin to 2.69 exactly. This
matches what gcc/binutils/gdb are already doing.
The README file already says to use autoconf-2.69.
To accomplish this, it's just as simple as adding -I flags to the
top-level config/ dir when running aclocal. This is because the
override.m4 file overrides AC_INIT to first require the specific
autoconf version before calling the real AC_INIT.
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In order to transition to automake, we have to use hardcoded paths in
the AC_CONFIG_AUX_DIR macro call (since automake evaluates the path
itself, and doesn't expand vars), so simplify all the calls here.
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Regenerate the files using automake-1.15 & autoconf-2.69 to match the
binutils/gdb/gcc projects. Ran:
libgloss $ find -name configure.ac -printf '%h\n' | while read d; do
(cd $d; export WANT_AUTOCONF=2.69 WANT_AUTOMAKE=1.15;
aclocal-1.15 -I.. && autoconf-2.69); done
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The .in name has been deprecated for a long time in favor of .ac.
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When off_t is 32 bits, the value needs to be sign-extended to 64 bits
before shifting right to extract the high-order word. Previously
negative offsets were incorrectly encoded.
Signed-off-by: Sandra Loosemore <sandra@codesourcery.com>
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Commit 72ff9acad2ab54e80a19ddaec0106065c817e3f6 caused st_atime,
st_ctime, and st_mtime to be defined as macros. This collided with
use of these identifiers as field names in struct gdb_stat (which
represents the GDB RSP encoding of struct stat) in libgloss
semihosting support for nios2 and m68k. This patch renames the
affected fields of struct gdb_stat.
Signed-off-by: Sandra Loosemore <sandra@codesourcery.com>
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The location of the handler at offset 0x20 from the start of memory,
immediately after the 32-byte reset vector, matches the expectations
of real hardware (e.g., a 3c120 board).
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Author: Sandra Loosemore <sandra@codesourcery.com>
Date: Wed Mar 13 20:22:16 2019 -0700
Add semihosting documentation for nios2 and m68k.
QEMU maintainers have asked for a specification of the nios2
semihosting interface. Since it's essentially a copy of the m68k
implementation, this patch adds a document for that target as well.
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