lib/csu: Fix longstanding quickworld issue.

Now /bin/sh and friends will have correct DragonFly version in NOTES section.
Full buildworld upon major version changes still should be preferred.

LTO: Prevent -flto exposing csu internals when linking v2.

Userland applications should not see what is happening in these sources,
let alone have behavioural changes for -fxxx flags during linking.

LTO: Prevent -flto exposing csu internals when linking v2.

Userland applications should not see what is happening in these sources,
let alone have behavioural changes for -fxxx flags during linking.

Also make sure -flto does *not* get near any of crt1 stuff.
Caused lost os version elf notes in utilities and even segfaults in pkg(8).

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csu: Remove $CFLAGS from intermediate object targets

These makefile case from FreeBSD, but the flags were called $ACFLAGS,
not $CFLAGS, and they are empty by default. I noticed clang's
assembler sc

csu: Remove $CFLAGS from intermediate object targets

These makefile case from FreeBSD, but the flags were called $ACFLAGS,
not $CFLAGS, and they are empty by default. I noticed clang's
assembler screaming about unused flags and then noticed this mistake.

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csu: Fix .eh_frame_hdr errors seen on i386

The libcsu object files should have been generated with
-fno-asynchronous-unwind-tables. The crtbegin*, crtend* objects,
specific to a compiler, were gene

csu: Fix .eh_frame_hdr errors seen on i386

The libcsu object files should have been generated with
-fno-asynchronous-unwind-tables. The crtbegin*, crtend* objects,
specific to a compiler, were generated with this flag on both platforms
as seen in the vendor build. This commit builds libcsu with the same
cflags on both platforms, and it allows the error frame header to get
built successfully.

This has been seen on i386 for a while, and later bug #2511 hit upon
it outside of the world build.

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crtstuff: Move 6 identical sed patterns to variable

This note.ABI-tag pattern will be changed in an upcoming commit.
Taken from: FreeBSD SVN 232832 (2012-03-11)

csu: Add .note.ABI-tag and .note.GNU-stack

For all arches except sparc, gcc emits the section directive for the
following struct with a PROGBITS type. However, newer versions of binutils
(after 2.1

csu: Add .note.ABI-tag and .note.GNU-stack

For all arches except sparc, gcc emits the section directive for the
following struct with a PROGBITS type. However, newer versions of binutils
(after 2.16.90) require the section to be of NOTE type, to guarantee that
the .note.ABI-tag section correctly ends up in the first page of the final
executable.

Unfortunately, there is no clean way to tell gcc to use another section
type, so this C file (or the C file that includes it) must be compiled in
multiple steps:

- Compile the .c file to a .s file.
- Edit the .s file to change the 'progbits' type to 'note', for the section
directive that defines the .note.ABI-tag section.
- Compile the .s file to an object file.

These steps are done in the invididual Makefiles for each applicable arch.

Taken-from: FreeBSD SVN 217375 (13 JAN 2011)

On i386 crtn.S:
Keep the stack aligned to a 16 byte boundary when calling init functions
so that we don't cause a bus error if they start storing SSE math stuff
on the stack.

Taken-from: FreeBSD SVN 146369 (19 MAY 2005)

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Initial import of binutils 2.22 on the new vendor branch

Future versions of binutils will also reside on this branch rather
than continuing to create new binutils branches for each new version.

rename amd64 architecture to x86_64

The rest of the world seems to call amd64 x86_64. Bite the bullet and
rename all of the architecture files and references. This will
hopefully make pkgsrc build

rename amd64 architecture to x86_64

The rest of the world seems to call amd64 x86_64. Bite the bullet and
rename all of the architecture files and references. This will
hopefully make pkgsrc builds less painful.

Discussed-with: dillon@

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rename amd64 architecture to x86_64

The rest of the world seems to call amd64 x86_64. Bite the bullet and
rename all of the architecture files and references. This will
hopefully make pkgsrc build

rename amd64 architecture to x86_64

The rest of the world seems to call amd64 x86_64. Bite the bullet and
rename all of the architecture files and references. This will
hopefully make pkgsrc builds less painful.

Discussed-with: dillon@

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gcc44, crtstuff: Provide -fPIE support

Properly support Position Independent Executables (PIE) generation by
linking PIE binaries with specially-built Scrt1.o instead of crt1.o.
The latter is built

gcc44, crtstuff: Provide -fPIE support

Properly support Position Independent Executables (PIE) generation by
linking PIE binaries with specially-built Scrt1.o instead of crt1.o.
The latter is built without the -fPIC flag.

For the i386 version, gcc-2 code was first purged, and then the new
assembly was placed in a separate file. All data extracted by the
assembler stub as explicit parameters. The hidden _start1 symbol is used
as an interface between the assembly and C code.

The CFLAGS -fkeep-inline-functions was removed as it was legacy FreeBSD
code that has been long since removed. The CFLAGS -elf was removed as
all DragonFly targets are elf. The LDFLAGS -elf was removed because it
was getting interpreted as "-entry=lf" by ld. LDFLAGS weren't even used
before this commit so it's always been completely extraneous.

For x86_64, the no-omit-frame-pointer flag was added during the build of
crt1.o. For the builtin gcc function __builtin_frame_address to work, all
call frames need to save the frame pointer. In particular, this is
important for the upper frame that should terminate the chain.

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lib: Move the definition of WARNS into lib/Makefile.inc.

lib/csu: Fix 'make clean'.