Subject: bug#49417: glibc uses "objcopy", but seems to need "TARGET-objcopy" [core-updates]

From: Ludovic Courtès <[email-masked]>
Date: Tue, 06 Jul 2021 16:49:26 +0200

Hi,

Maxime Devos <[email-masked]> skribis:

> That looks like the earlier issue we had with "objdump" vs. "TARGET-objdump" ...
> Maybe a similar fix is possible?

Yes, indeed.  The attached patch does that and fixes the issue.

I’ll inline the patch in the ‘patches’ field and commit that later on so
as to group world rebuilds a bit.  I’ll send it to libc-alpha too.

(Initially I tried patching just
sysdeps/powerpc/powerpc64/le/configure.ac but that’s not sufficient.)

Thanks,
Ludo’.

diff --git a/gnu/packages/cross-base.scm b/gnu/packages/cross-base.scm
index ced226ef34..82af27e0b4 100644
--- a/gnu/packages/cross-base.scm
+++ b/gnu/packages/cross-base.scm
@@ -486,6 +486,11 @@ and the cross tool chain."
                    #:xbinutils xbinutils)
       (package
         (inherit libc)
+        (source (origin
+                  (inherit (package-source glibc))
+                  (patches (append (origin-patches (package-source glibc))
+                               (list  (search-patch
+                                       "glibc-powerpc64le-objcopy.patch"))))))
         (name (string-append "glibc-cross-" target))
         (arguments
          (substitute-keyword-arguments
diff --git a/gnu/packages/patches/glibc-powerpc64le-objcopy.patch b/gnu/packages/patches/glibc-powerpc64le-objcopy.patch
new file mode 100644
index 0000000000..acdf29a02a
--- /dev/null
+++ b/gnu/packages/patches/glibc-powerpc64le-objcopy.patch
@@ -0,0 +1,156 @@
+Use "powerpc64le-linux-gnu-objcopy" rather than "objcopy" when cross-compiling
+to powerpc64le-linux-gnu: <https://issues.guix.gnu.org/49417>.
+
+diff --git a/aclocal.m4 b/aclocal.m4
+index 13a791ffde..5b370c07a2 100644
+--- a/aclocal.m4
++++ b/aclocal.m4
+@@ -118,8 +118,6 @@ AS=`$CC -print-prog-name=as`
+ LD=`$CC -print-prog-name=ld`
+ AR=`$CC -print-prog-name=ar`
+ AC_SUBST(AR)
+-OBJCOPY=`$CC -print-prog-name=objcopy`
+-AC_SUBST(OBJCOPY)
+ GPROF=`$CC -print-prog-name=gprof`
+ AC_SUBST(GPROF)
+ 
+diff --git a/configure b/configure
+index fe0eda1cd5..3a08270734 100755
+--- a/configure
++++ b/configure
+@@ -654,7 +654,6 @@ MAKE
+ LD
+ AS
+ GPROF
+-OBJCOPY
+ AR
+ LN_S
+ INSTALL_DATA
+@@ -689,6 +688,7 @@ sysheaders
+ ac_ct_CXX
+ CXXFLAGS
+ CXX
++OBJCOPY
+ OBJDUMP
+ READELF
+ CPP
+@@ -3054,6 +3054,98 @@ else
+   OBJDUMP="$ac_cv_prog_OBJDUMP"
+ fi
+ 
++if test -n "$ac_tool_prefix"; then
++  # Extract the first word of "${ac_tool_prefix}objcopy", so it can be a program name with args.
++set dummy ${ac_tool_prefix}objcopy; ac_word=$2
++{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
++$as_echo_n "checking for $ac_word... " >&6; }
++if ${ac_cv_prog_OBJCOPY+:} false; then :
++  $as_echo_n "(cached) " >&6
++else
++  if test -n "$OBJCOPY"; then
++  ac_cv_prog_OBJCOPY="$OBJCOPY" # Let the user override the test.
++else
++as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
++for as_dir in $PATH
++do
++  IFS=$as_save_IFS
++  test -z "$as_dir" && as_dir=.
++    for ac_exec_ext in '' $ac_executable_extensions; do
++  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
++    ac_cv_prog_OBJCOPY="${ac_tool_prefix}objcopy"
++    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
++    break 2
++  fi
++done
++  done
++IFS=$as_save_IFS
++
++fi
++fi
++OBJCOPY=$ac_cv_prog_OBJCOPY
++if test -n "$OBJCOPY"; then
++  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJCOPY" >&5
++$as_echo "$OBJCOPY" >&6; }
++else
++  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
++$as_echo "no" >&6; }
++fi
++
++
++fi
++if test -z "$ac_cv_prog_OBJCOPY"; then
++  ac_ct_OBJCOPY=$OBJCOPY
++  # Extract the first word of "objcopy", so it can be a program name with args.
++set dummy objcopy; ac_word=$2
++{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
++$as_echo_n "checking for $ac_word... " >&6; }
++if ${ac_cv_prog_ac_ct_OBJCOPY+:} false; then :
++  $as_echo_n "(cached) " >&6
++else
++  if test -n "$ac_ct_OBJCOPY"; then
++  ac_cv_prog_ac_ct_OBJCOPY="$ac_ct_OBJCOPY" # Let the user override the test.
++else
++as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
++for as_dir in $PATH
++do
++  IFS=$as_save_IFS
++  test -z "$as_dir" && as_dir=.
++    for ac_exec_ext in '' $ac_executable_extensions; do
++  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
++    ac_cv_prog_ac_ct_OBJCOPY="objcopy"
++    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
++    break 2
++  fi
++done
++  done
++IFS=$as_save_IFS
++
++fi
++fi
++ac_ct_OBJCOPY=$ac_cv_prog_ac_ct_OBJCOPY
++if test -n "$ac_ct_OBJCOPY"; then
++  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJCOPY" >&5
++$as_echo "$ac_ct_OBJCOPY" >&6; }
++else
++  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
++$as_echo "no" >&6; }
++fi
++
++  if test "x$ac_ct_OBJCOPY" = x; then
++    OBJCOPY="false"
++  else
++    case $cross_compiling:$ac_tool_warned in
++yes:)
++{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
++$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
++ac_tool_warned=yes ;;
++esac
++    OBJCOPY=$ac_ct_OBJCOPY
++  fi
++else
++  OBJCOPY="$ac_cv_prog_OBJCOPY"
++fi
++
+ 
+ # We need the C++ compiler only for testing.
+ ac_ext=cpp
+@@ -4645,8 +4737,6 @@ AS=`$CC -print-prog-name=as`
+ LD=`$CC -print-prog-name=ld`
+ AR=`$CC -print-prog-name=ar`
+ 
+-OBJCOPY=`$CC -print-prog-name=objcopy`
+-
+ GPROF=`$CC -print-prog-name=gprof`
+ 
+ 
+diff --git a/configure.ac b/configure.ac
+index 924af12738..2148cd2ec8 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -53,6 +53,7 @@ AC_SUBST(cross_compiling)
+ AC_PROG_CPP
+ AC_CHECK_TOOL(READELF, readelf, false)
+ AC_CHECK_TOOL(OBJDUMP, objdump, false)
++AC_CHECK_TOOL(OBJCOPY, objcopy, false)
+ 
+ # We need the C++ compiler only for testing.
+ AC_PROG_CXX