| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 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 = $${PWDCMD-pwd} |
| 31 | STAMP = echo timestamp > |
| 32 | |
| 33 | libgodir = ../$(target_noncanonical)/libgo |
| 34 | +libgccdir = ../$(target_noncanonical)/libgcc |
| 35 | LIBGODEP = $(libgodir)/libgo.la |
| 36 | |
| 37 | LIBGOTOOL = $(libgodir)/libgotool.a |
| 38 | @@ -41,7 +42,8 @@ GOCFLAGS = $(CFLAGS_FOR_TARGET) |
| 39 | GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS) |
| 40 | |
| 41 | AM_GOCFLAGS = -I $(libgodir) |
| 42 | -AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs |
| 43 | +AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \ |
| 44 | + -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s |
| 45 | GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@ |
| 46 | |
| 47 | libgosrcdir = $(srcdir)/../libgo/go |
| 48 | --- a/gotools/Makefile.in |
| 49 | +++ b/gotools/Makefile.in |
| 50 | @@ -337,6 +337,7 @@ mkinstalldirs = $(SHELL) $(toplevel_srcd |
| 51 | PWD_COMMAND = $${PWDCMD-pwd} |
| 52 | STAMP = echo timestamp > |
| 53 | libgodir = ../$(target_noncanonical)/libgo |
| 54 | +libgccdir = ../$(target_noncanonical)/libgcc |
| 55 | LIBGODEP = $(libgodir)/libgo.la |
| 56 | LIBGOTOOL = $(libgodir)/libgotool.a |
| 57 | @NATIVE_FALSE@GOCOMPILER = $(GOC) |
| 58 | @@ -346,7 +347,8 @@ LIBGOTOOL = $(libgodir)/libgotool.a |
| 59 | GOCFLAGS = $(CFLAGS_FOR_TARGET) |
| 60 | GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS) |
| 61 | AM_GOCFLAGS = -I $(libgodir) |
| 62 | -AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs |
| 63 | +AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \ |
| 64 | + -L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s |
| 65 | GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@ |
| 66 | libgosrcdir = $(srcdir)/../libgo/go |
| 67 | cmdsrcdir = $(libgosrcdir)/cmd |