From 1a65041dc0fa4f4737957f964473bdc0630ffb38 Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <abrodkin@synopsys.com>
Date: Fri, 10 Jul 2020 23:38:09 +0300
Subject: libgmp: Fix cross-canadian build for macOS

Currently when building cross-canadian toolchain for macOS
the folowing error happens when GCC is configured:
|ld: illegal text-relocation to '___gmp_binvert_limb_table' in
|... /.build/... /buildtools/complibs-host/lib/libgmp.a(mp_minv_tab.o) from '___gmpn_divexact_1' in
|... /.build/... /buildtools/complibs-host/lib/libgmp.a(dive_1.o)
|collect2: error: ld returned 1 exit status

Apparently this might be solved with GMP configured with "--with-pic",
even though we're talking about static library here.

That solution was found here:
    https://github.com/Homebrew/homebrew-core/pull/25470

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

diff --git a/scripts/build/companion_libs/100-gmp.sh b/scripts/build/companion_libs/100-gmp.sh
index 4e8c12f..eafe2dd 100644
--- a/scripts/build/companion_libs/100-gmp.sh
+++ b/scripts/build/companion_libs/100-gmp.sh
@@ -87,6 +87,15 @@ do_gmp_backend() {
         extra_config+=("--enable-mpbsd")
     fi
 
+    # To avoind “illegal text-relocation” linking error against
+    # the static library, see:
+    #     https://github.com/Homebrew/homebrew-core/pull/25470
+    case "${host}" in
+        *darwin*)
+            extra_config+=("--with-pic")
+            ;;
+    esac
+
     # FIXME: GMP's configure script doesn't respect the host parameter
     # when not cross-compiling, ie when build == host.
     CT_DoExecLog CFG                                \
-- 
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