https://gcc.gnu.org/g:3b36e96b575b493a21510c877b273608113108ed
commit r15-8930-g3b36e96b575b493a21510c877b273608113108ed
Author: Thomas Schwinge <tho...@codesourcery.com>
Date: Tue Jul 19 15:42:17 2022 +0200
driver: Forward '-lstdc++' to offloading compilation [PR101544]
..., so that users don't manually need to specify
'-foffload-options=-lstdc++'
in addition to '-lstdc++' (specified manually, or implicitly by the driver).
Do like commit 4bcb46b3ade1796c5a57b294f5cca25f00671cac
"driver: Forward '-lgfortran', '-lm' to offloading compilation".
PR driver/101544
gcc/
* gcc.cc (driver_handle_option): Forward host '-lstdc++' to
offloading compilation.
* config/gcn/mkoffload.cc (main): Adjust.
* config/nvptx/mkoffload.cc (main): Likewise.
libgomp/
* testsuite/libgomp.c++/pr101544-1-O0.C: Remove
'-foffload-options=-lstdc++'.
* testsuite/libgomp.c++/pr101544-1.C: Likewise.
* testsuite/libgomp.oacc-c++/pr101544-1.C: Likewise.
Diff:
---
gcc/config/gcn/mkoffload.cc | 3 ++-
gcc/config/nvptx/mkoffload.cc | 3 ++-
gcc/gcc.cc | 3 ++-
libgomp/testsuite/libgomp.c++/pr101544-1-O0.C | 1 -
libgomp/testsuite/libgomp.c++/pr101544-1.C | 1 -
libgomp/testsuite/libgomp.oacc-c++/pr101544-1.C | 1 -
6 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/gcc/config/gcn/mkoffload.cc b/gcc/config/gcn/mkoffload.cc
index fbd68a6cd8c9..f5b89c9fee7a 100644
--- a/gcc/config/gcn/mkoffload.cc
+++ b/gcc/config/gcn/mkoffload.cc
@@ -1070,7 +1070,8 @@ main (int argc, char **argv)
#undef STR
/* Translate host into offloading libraries. */
else if (strcmp (argv[i], "-l_GCC_gfortran") == 0
- || strcmp (argv[i], "-l_GCC_m") == 0)
+ || strcmp (argv[i], "-l_GCC_m") == 0
+ || strcmp (argv[i], "-l_GCC_stdc++") == 0)
{
/* Elide '_GCC_'. */
size_t i_dst = strlen ("-l");
diff --git a/gcc/config/nvptx/mkoffload.cc b/gcc/config/nvptx/mkoffload.cc
index 958e16f3918e..bdfe7f58b166 100644
--- a/gcc/config/nvptx/mkoffload.cc
+++ b/gcc/config/nvptx/mkoffload.cc
@@ -741,7 +741,8 @@ main (int argc, char **argv)
dumppfx = argv[++i];
/* Translate host into offloading libraries. */
else if (strcmp (argv[i], "-l_GCC_gfortran") == 0
- || strcmp (argv[i], "-l_GCC_m") == 0)
+ || strcmp (argv[i], "-l_GCC_m") == 0
+ || strcmp (argv[i], "-l_GCC_stdc++") == 0)
{
/* Elide '_GCC_'. */
size_t i_dst = strlen ("-l");
diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index c7b2aa6df166..3edd21fb09e1 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -4154,7 +4154,8 @@ forward_offload_option (size_t opt_index, const char
*arg, bool validated)
are injected by default in offloading compilation, and therefore not
forwarded here. */
/* GCC libraries. */
- if (/* '-lgfortran' */ strcmp (arg, "gfortran") == 0 )
+ if (/* '-lgfortran' */ strcmp (arg, "gfortran") == 0
+ || /* '-lstdc++' */ strcmp (arg, "stdc++") == 0)
save_switch (concat ("-foffload-options=-l_GCC_", arg, NULL),
0, NULL, validated, true);
/* Other libraries. */
diff --git a/libgomp/testsuite/libgomp.c++/pr101544-1-O0.C
b/libgomp/testsuite/libgomp.c++/pr101544-1-O0.C
index 19a8cad23286..c8a73dcfa19f 100644
--- a/libgomp/testsuite/libgomp.c++/pr101544-1-O0.C
+++ b/libgomp/testsuite/libgomp.c++/pr101544-1-O0.C
@@ -1,4 +1,3 @@
-// { dg-additional-options -foffload-options=-lstdc++ }
// { dg-additional-options -O0 }
#include "pr101544-1.C"
diff --git a/libgomp/testsuite/libgomp.c++/pr101544-1.C
b/libgomp/testsuite/libgomp.c++/pr101544-1.C
index 8ea70a242bc5..fcd3e970bd89 100644
--- a/libgomp/testsuite/libgomp.c++/pr101544-1.C
+++ b/libgomp/testsuite/libgomp.c++/pr101544-1.C
@@ -1,4 +1,3 @@
-// { dg-additional-options -foffload-options=-lstdc++ }
// See also '../libgomp.oacc-c++/pr101544-1.C'.
#ifndef ALWAYS_INLINE
# define ALWAYS_INLINE
diff --git a/libgomp/testsuite/libgomp.oacc-c++/pr101544-1.C
b/libgomp/testsuite/libgomp.oacc-c++/pr101544-1.C
index 004cd49353be..d4d28a611597 100644
--- a/libgomp/testsuite/libgomp.oacc-c++/pr101544-1.C
+++ b/libgomp/testsuite/libgomp.oacc-c++/pr101544-1.C
@@ -1,4 +1,3 @@
-// { dg-additional-options -foffload-options=-lstdc++ }
// { dg-additional-options -fno-inline } for stable results regarding OpenACC
'routine'.
// But actually, as none of the '#pragma acc routine' syntax is accepted,
force inlining:
#define ALWAYS_INLINE __attribute__((always_inline))
