[gcc r12-7847] [libgomp, testsuite] Fix hardcoded libexec in plugin/configfrag.ac

[gcc r12-7847] [libgomp, testsuite] Fix hardcoded libexec in plugin/configfrag.ac

[Tom de Vries]

https://gcc.gnu.org/g:52f42dce15f036a140154aa339fa1709c5cc858b

commit r12-7847-g52f42dce15f036a140154aa339fa1709c5cc858b
Author: Tom de Vries <tdevries@suse.de>
Date:   Mon Mar 28 10:45:45 2022 +0200

    [libgomp, testsuite] Fix hardcoded libexec in plugin/configfrag.ac
    
    When building an nvptx offloading configuration on openSUSE Leap 15.3, the
    site script /usr/share/site/x86_64-unknown-linux-gnu is activated, setting
    libexecdir to ${exec_prefix}/lib rather than ${exec_prefix}/libexec:
    ...
    | # If user did not specify libexecdir, set the correct target:
    | # Nor FHS nor openSUSE allow prefix/libexec. Let's default to prefix/lib.
    |
    | if test "$libexecdir" = '${exec_prefix}/libexec' ; then
    |       libexecdir='${exec_prefix}/lib'
    | fi
    ...
    
    However, in libgomp libgomp/plugin/configfrag.ac we hardcode libexec:
    ...
        # Configure additional search paths.
        if test x"$tgt_dir" != x; then
          offload_additional_options="$offload_additional_options \
            -B$tgt_dir/libexec/gcc/\$(target_alias)/\$(gcc_version) \
            -B$tgt_dir/bin"
    ...
    
    Fix this by using /$(libexecdir:\$(exec_prefix)/%=%)/ instead of /libexec/.
    
    Tested on x86_64-linux with nvptx accelerator.
    
    libgomp/ChangeLog:
    
    2022-03-28  Tom de Vries  <tdevries@suse.de>
    
            * plugin/configfrag.ac: Use /$(libexecdir:\$(exec_prefix)/%=%)/
            instead of /libexec/.
            * configure: Regenerate.

Diff:
---
 libgomp/configure            | 2 +-
 libgomp/plugin/configfrag.ac | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libgomp/configure b/libgomp/configure
index a73a6d44003..bdbe3d142d1 100755
--- a/libgomp/configure
+++ b/libgomp/configure
@@ -15419,7 +15419,7 @@ rm -f core conftest.err conftest.$ac_objext \
     fi
     # Configure additional search paths.
     if test x"$tgt_dir" != x; then
-      offload_additional_options="$offload_additional_options -B$tgt_dir/libexec/gcc/\$(target_alias)/\$(gcc_version) -B$tgt_dir/bin"
+      offload_additional_options="$offload_additional_options -B$tgt_dir/\$(libexecdir:\$(exec_prefix)/%=%)/gcc/\$(target_alias)/\$(gcc_version) -B$tgt_dir/bin"
       offload_additional_lib_paths="$offload_additional_lib_paths:$tgt_dir/lib64:$tgt_dir/lib:$tgt_dir/lib32"
     else
       offload_additional_options="$offload_additional_options -B\$(libexecdir)/gcc/\$(target_alias)/\$(gcc_version) -B\$(bindir)"
diff --git a/libgomp/plugin/configfrag.ac b/libgomp/plugin/configfrag.ac
index da573bd8387..9f9d0a7f08c 100644
--- a/libgomp/plugin/configfrag.ac
+++ b/libgomp/plugin/configfrag.ac
@@ -254,7 +254,7 @@ if test x"$enable_offload_targets" != x; then
     fi
     # Configure additional search paths.
     if test x"$tgt_dir" != x; then
-      offload_additional_options="$offload_additional_options -B$tgt_dir/libexec/gcc/\$(target_alias)/\$(gcc_version) -B$tgt_dir/bin"
+      offload_additional_options="$offload_additional_options -B$tgt_dir/\$(libexecdir:\$(exec_prefix)/%=%)/gcc/\$(target_alias)/\$(gcc_version) -B$tgt_dir/bin"
       offload_additional_lib_paths="$offload_additional_lib_paths:$tgt_dir/lib64:$tgt_dir/lib:$tgt_dir/lib32"
     else
       offload_additional_options="$offload_additional_options -B\$(libexecdir)/gcc/\$(target_alias)/\$(gcc_version) -B\$(bindir)"