devel/gcc/patches/960-gotools-fix-compilation-when-making-cross-compiler.patch

   1 From dda6b050cd74a352670787a294596a9c56c21327 Mon Sep 17 00:00:00 2001
   2 From: Yousong Zhou <yszhou4tech@gmail.com>
   3 Date: Fri, 4 May 2018 18:20:53 +0800
   4 Subject: [PATCH] gotools: fix compilation when making cross compiler
   5
   6 libgo is "the runtime support library for the Go programming language.
   7 This library is intended for use with the Go frontend."
   8
   9 gccgo will link target files with libgo.so which depends on libgcc_s.so.1, but
  10 the linker will complain that it cannot find it.  That's because shared libgcc
  11 is not present in the install directory yet.  libgo.so was made without problem
  12 because gcc will emit -lgcc_s when compiled with -shared option.  When gotools
  13 were being made, it was supplied with -static-libgcc thus no link option was
  14 provided.  Check LIBGO in gcc/go/gcc-spec.c for how gccgo make a builtin spec
  15 for linking with libgo.so
  16
  17 - GccgoCrossCompilation, https://github.com/golang/go/wiki/GccgoCrossCompilation
  18 - Cross-building instructions, http://www.eglibc.org/archives/patches/msg00078.html
  19
  20 When 3-pass GCC compilation is used, shared libgcc runtime libraries will be
  21 available after gcc pass2 completed and will meet the gotools link requirement
  22 at gcc pass3
  23 ---
  24  gotools/Makefile.am | 4 +++-
  25  gotools/Makefile.in | 4 +++-
  26  2 files changed, 6 insertions(+), 2 deletions(-)
  27
  28 --- a/gotools/Makefile.am
  29 +++ b/gotools/Makefile.am
  30 @@ -26,6 +26,7 @@ PWD_COMMAND = $${PWDCMD-pwd}
  31  STAMP = echo timestamp >
  32
  33  libgodir = ../$(target_noncanonical)/libgo
  34 +libgccdir = ../$(target_noncanonical)/libgcc
  35  LIBGODEP = $(libgodir)/libgo.la
  36
  37  if NATIVE
  38 @@ -38,7 +39,8 @@ endif
  39  GOCFLAGS = $(CFLAGS_FOR_TARGET)
  40  GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
  41
  42 -AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
  43 +AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
  44 +       -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
  45  GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
  46
  47  cmdsrcdir = $(srcdir)/../libgo/go/cmd
  48 --- a/gotools/Makefile.in
  49 +++ b/gotools/Makefile.in
  50 @@ -252,13 +252,15 @@ mkinstalldirs = $(SHELL) $(toplevel_srcd
  51  PWD_COMMAND = $${PWDCMD-pwd}
  52  STAMP = echo timestamp >
  53  libgodir = ../$(target_noncanonical)/libgo
  54 +libgccdir = ../$(target_noncanonical)/libgcc
  55  LIBGODEP = $(libgodir)/libgo.la
  56  @NATIVE_FALSE@GOCOMPILER = $(GOC)
  57
  58  # Use the compiler we just built.
  59  @NATIVE_TRUE@GOCOMPILER = $(GOC_FOR_TARGET) $(XGCC_FLAGS_FOR_TARGET)
  60  GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
  61 -AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
  62 +AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
  63 +       -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
  64  GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
  65  cmdsrcdir = $(srcdir)/../libgo/go/cmd
  66  go_cmd_go_files = \