83 lines
4.0 KiB
Diff
83 lines
4.0 KiB
Diff
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From 18fde5740b09324dfb9cf41e9849672573ff5fa0 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Fri, 29 Mar 2013 09:10:06 +0400
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Subject: [PATCH 19/35] 64-bit multilib hack.
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GCC has internal multilib handling code but it assumes a very specific rigid directory
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layout. The build system implementation of multilib layout is very generic and allows
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complete customisation of the library directories.
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This patch is a partial solution to allow any custom directories to be passed into gcc
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and handled correctly. It forces gcc to use the base_libdir (which is the current
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directory, "."). We need to do this for each multilib that is configured as we don't
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know which compiler options may be being passed into the compiler. Since we have a compiler
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per mulitlib at this point that isn't an issue.
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The one problem is the target compiler is only going to work for the default multlilib at
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this point. Ideally we'd figure out which multilibs were being enabled with which paths
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and be able to patch these entries with a complete set of correct paths but this we
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don't have such code at this point. This is something the target gcc recipe should do
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and override these platform defaults in its build config.
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RP 15/8/11
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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Signed-off-by: Elvis Dowson <elvis.dowson@gmail.com>
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Upstream-Status: Pending
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---
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gcc/config/i386/t-linux64 | 6 ++----
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gcc/config/mips/t-linux64 | 10 +++-------
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gcc/config/rs6000/t-linux64 | 5 ++---
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3 files changed, 7 insertions(+), 14 deletions(-)
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Index: gcc-4.9-20140316/gcc/config/i386/t-linux64
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===================================================================
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--- gcc-4.9-20140316.orig/gcc/config/i386/t-linux64
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+++ gcc-4.9-20140316/gcc/config/i386/t-linux64
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@@ -32,7 +32,5 @@
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#
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comma=,
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MULTILIB_OPTIONS = $(subst $(comma),/,$(TM_MULTILIB_CONFIG))
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-MULTILIB_DIRNAMES = $(patsubst m%, %, $(subst /, ,$(MULTILIB_OPTIONS)))
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-MULTILIB_OSDIRNAMES = m64=../lib64$(call if_multiarch,:x86_64-linux-gnu)
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-MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:i386-linux-gnu)
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-MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x86_64-linux-gnux32)
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+MULTILIB_DIRNAMES = . .
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+MULTILIB_OSDIRNAMES = ../$(shell basename $(base_libdir)) ../$(shell basename $(base_libdir))
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Index: gcc-4.9-20140316/gcc/config/mips/t-linux64
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===================================================================
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--- gcc-4.9-20140316.orig/gcc/config/mips/t-linux64
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+++ gcc-4.9-20140316/gcc/config/mips/t-linux64
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@@ -17,10 +17,6 @@
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# <http://www.gnu.org/licenses/>.
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MULTILIB_OPTIONS = mabi=n32/mabi=32/mabi=64
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-MULTILIB_DIRNAMES = n32 32 64
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-MIPS_EL = $(if $(filter %el, $(firstword $(subst -, ,$(target)))),el)
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-MIPS_SOFT = $(if $(strip $(filter MASK_SOFT_FLOAT_ABI, $(target_cpu_default)) $(filter soft, $(with_float))),soft)
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-MULTILIB_OSDIRNAMES = \
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- ../lib32$(call if_multiarch,:mips64$(MIPS_EL)-linux-gnuabin32$(MIPS_SOFT)) \
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- ../lib$(call if_multiarch,:mips$(MIPS_EL)-linux-gnu$(MIPS_SOFT)) \
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- ../lib64$(call if_multiarch,:mips64$(MIPS_EL)-linux-gnuabi64$(MIPS_SOFT))
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+MULTILIB_DIRNAMES = . . .
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+MULTILIB_OSDIRNAMES = ../$(shell basename $(base_libdir)) ../$(shell basename $(base_libdir)) ../$(shell basename $(base_libdir))
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+
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Index: gcc-4.9-20140316/gcc/config/rs6000/t-linux64
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===================================================================
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--- gcc-4.9-20140316.orig/gcc/config/rs6000/t-linux64
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+++ gcc-4.9-20140316/gcc/config/rs6000/t-linux64
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@@ -26,10 +26,9 @@
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# MULTILIB_OSDIRNAMES according to what is found on the target.
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MULTILIB_OPTIONS := m64/m32
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-MULTILIB_DIRNAMES := 64 32
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+MULTILIB_DIRNAMES := . .
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MULTILIB_EXTRA_OPTS :=
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-MULTILIB_OSDIRNAMES := m64=../lib64$(call if_multiarch,:powerpc64-linux-gnu)
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-MULTILIB_OSDIRNAMES += m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:powerpc-linux-gnu)
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+MULTILIB_OSDIRNAMES := ../$(shell basename $(base_libdir)) ../$(shell basename $(base_libdir))
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rs6000-linux.o: $(srcdir)/config/rs6000/rs6000-linux.c
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$(COMPILE) $<
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