Moving it inside gcc dir allows gcc to detect and build isl while
building gcc. It has dependencies on other libraries that would
need to be prebuilt if we build it ourselves.
This is one of a few steps in building gcc with isl and allowing graphite
optimization flags.
Partially from @jarekpelczar's work, but only certain pieces that
were needed, and the rest is either from earlier GCC patches
or is my own work.
With this, GCC 7 can now build Haiku.
"* LINK_SPEC: Pass "-shared" to the linker only if it was passed to gcc; output
position-independent executables by default;" is reverted to workaround a
link failure on gcc4 with binutils 2.26: add-ons objects would fail to link
against an executable (being no more a shared object). This is possibly temporary
until the need for executable as shared objects is fully reviewed.
Correct LINK_SPEC so it
* Sets appropriate dynamic-link options for any type of dynamically
linked executable, not only position-independent ones.
* Does not omit these options if "-pie" is specified by the user.
* Recognizes the "-static" option.
* Includes a hyphen previously missing from "--no-undefined".
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
For x86_64 this includes defining a new linker emulation, "elf_x86_64_haiku"
(to match the existing "elf_i386_haiku") and updating gcc accordingly.
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
Update LINK_SPEC (for arm, i386, x86_64 and ppc) with more compact but
functionally equivalent sequences.
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
* CC1_SPEC: Remove non-existent "no-fpic" command-line option; add
"fno-PIC" and "fno-PIE" as options that disable the generation of
position-independent code; use "-fPIC" by default.
* LINK_SPEC: Pass "-shared" to the linker only if it was passed to gcc; output
position-independent executables by default; when linking executables, allow
undefined symbols in shared libraries and export all symbols (to match the
behaviour of "-shared").
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
Works around "relocation truncated to fit: R_PPC_GOT16 against symbol" issue
mentioned in #10240. PIC uses a larger GOT which doesn't overflow, unlike pic.
* Adjust the libgcc spec to actually link against libgcc explicitly
(it is no longer included in libroot.so on anything except x86_gcc2).
* Apply --as-needed when linking against libgcc_s.so
* Drop search paths that no longer exist (/boot/common/...).
* The glue code files crtbegin.o and crtend.o don't cleanup globals
properly, only the variants with the S suffix do. As executables are
shared on Haiku, we use crtbeginS.o and crtendS.o for those, too.
This fixes crashes on shutdown of Haiku servers that load add-ons (e.g.
Print Server and Media Add-On Server).
* The configure script for libstdc++ contained a couple of duplicate
'haiku*' case entries, where the first would shadow the second.
* Correct several incorrect libtool definitions and paths.
