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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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 Posted: Thu Feb 10, 2022 1:35 pm Post subject: mold wiki: patching gcc:11.2.1_p20220115 [won't fix] |
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wiki mentions sys-devel/gcc-11.2.1_p20211127 has to be patched as described.
EDIT: patch link doesn't seems to work here... 
Currenty testing gcc-12 upstream commit at patching phase...
It doesn't say anything about later version...
gentoo gcc-git doesn't show anything in this respect.
But building gcc takes a kong time here, so I'd rather ask first.
Does anyone knows?
Thks 4 ur attention, interest & support.
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Last edited by CaptainBlood on Fri Feb 11, 2022 9:29 am; edited 4 times in total |
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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| Posted: Thu Feb 10, 2022 3:32 pm Post subject: |
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| Code: | diff -Naur ~/mold.patch /etc/portage/patches/sys-devel/gcc-11.2.1_p20220115/mold.patch
--- /root/mold.patch 2022-02-10 18:21:00.409413589 +0300
+++ /etc/portage/patches/sys-devel/gcc-11.2.1_p20220115/mold.patch 2022-02-10 18:23:32.979408061 +0300
@@ -46,7 +46,7 @@
selected_linker = USE_LLD_LD;
+ else if (strcmp (argv[i], "-fuse-ld=mold") == 0)
+ selected_linker = USE_MOLD_LD;
- else if (startswith (argv[i], "-o"))
+ else if (strncmp (argv[i], "-o", 2) == 0)
{
/* Parse the output filename if it's given so that we can make
@@ -1048,7 +1052,7 @@ main (int argc, char **argv) |
to patch above upstream git linked patch.
Currently building  .
Thks 4 ur attention, interest & support.
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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| Posted: Thu Feb 10, 2022 11:50 pm Post subject: |
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Testing fails getting stuck at | Code: | | checking whether the C compiler works |
Any idea welcome...
Thks 4 ur attention, interest & support.
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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| Posted: Fri Feb 11, 2022 9:14 am Post subject: |
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As an example, trying to compile sys-apps/less, ps shows | Code: | grep mold
0 250 10365 10364 11 -9 4668 2676 ? S<+ pts/0 0:00 x86_64-pc-linux-gnu-gcc -march=skylake -O2 -pipe -Wa,-mbranches-within-32B-boundaries -Wl,-O1 -Wl,-fuse-ld=mold conftest.c
0 250 10368 10365 11 -9 3996 2100 ? S<+ pts/0 0:00 /usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.1/collect2 -plugin /usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.1/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.1/lto-wrapper -plugin-opt=-fresolution=/var/tmp/portage/sys-apps/less-590/temp/ccWluawm.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64/Scrt1.o /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64/crti.o /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/crtbeginS.o -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1 -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../x86_64-pc-linux-gnu/lib -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../.. -O1 -fuse-ld=mold /var/tmp/portage/sys-apps/less-590/temp/ccy1qrZX.o -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/crtendS.o /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64/crtn.o
0 250 10369 10368 11 -9 12520 2668 ? S<+ pts/0 0:00 /usr/bin/ld.mold -plugin /usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.1/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-pc-linux-gnu/11.2.1/lto-wrapper -plugin-opt=-fresolution=/var/tmp/portage/sys-apps/less-590/temp/ccWluawm.res -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64/Scrt1.o /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64/crti.o /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/crtbeginS.o -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1 -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../x86_64-pc-linux-gnu/lib -L/usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../.. -O1 /var/tmp/portage/sys-apps/less-590/temp/ccy1qrZX.o -lgcc --push-state --as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s --pop-state /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/crtendS.o /usr/lib/gcc/x86_64-pc-linux-gnu/11.2.1/../../../../lib64/crtn.o |
later shown command line remains stuck for ever...
According to man, mold doesn't have -plugin option.
Seconfly, -flto not activated here, i.e. at user level.
Any idea how to progress here?
Thks 4 ur attention, interest & support.
_________________
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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| Posted: Fri Feb 11, 2022 9:25 am Post subject: |
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Lol
Falling back to unpatched gcc:11 works fine here.
That may be the reason why the patch referenced by wiki doesn't exist anymore.
Carrying on testign mold here.
Thks 4 ur attention, interest & support.
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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| Posted: Fri Feb 11, 2022 10:00 am Post subject: |
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Much too much optimistic here,
uptream patches for mold
Previous post only reports patch patching for 2021-12-29.
Thks 4 ur attention, interest & support.
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awilum
n00b
Joined: 04 Feb 2020
Posts: 3
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| Posted: Mon Jun 27, 2022 4:14 pm Post subject: |
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This is my patch for gcc to use -fuse-mold, I made some little changes from the original, it works with gcc-11.2.1_p20220115 & gcc-1.3.0
Put it in the directory /etc/portage/patches/sys-devel/{gcc-11.2.1_p20220115|gcc-11.3.0}
fuse-ld-mold.patch:
| Code: |
From ad964f7eaef9c03ce68a01cfdd7fde9d56524868 Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Tue, 21 Dec 2021 17:43:55 +0100
Subject: [PATCH] Support ld.mold linker.
gcc/ChangeLog:
* collect2.c (main): Add ld.mold.
* common.opt: Add -fuse-ld=mold.
* doc/invoke.texi: Document it.
* gcc.c (driver_handle_option): Handle -fuse-ld=mold.
* opts.c (common_handle_option): Likewise.
---
gcc/collect2.c | 10 +++++++---
gcc/common.opt | 4 ++++
gcc/doc/invoke.texi | 4 ++++
gcc/gcc.c | 4 ++++
gcc/opts.c | 1 +
5 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/gcc/collect2.c b/gcc/collect2.c
index d47fe3f91959c..b322527847c70 100644
--- a/gcc/collect2.c
+++ b/gcc/collect2.c
@@ -776,6 +776,7 @@ main (int argc, char **argv)
USE_GOLD_LD,
USE_BFD_LD,
USE_LLD_LD,
+ USE_MOLD_LD,
USE_LD_MAX
} selected_linker = USE_DEFAULT_LD;
static const char *const ld_suffixes[USE_LD_MAX] =
@@ -784,7 +785,8 @@ main (int argc, char **argv)
PLUGIN_LD_SUFFIX,
"ld.gold",
"ld.bfd",
- "ld.lld"
+ "ld.lld",
+ "ld.mold"
};
static const char *const real_ld_suffix = "real-ld";
static const char *const collect_ld_suffix = "collect-ld";
@@ -970,6 +970,8 @@
selected_linker = USE_GOLD_LD;
else if (strcmp (argv[i], "-fuse-ld=lld") == 0)
selected_linker = USE_LLD_LD;
+ else if (strcmp (argv[i], "-fuse-ld=mold") == 0)
+ selected_linker = USE_MOLD_LD;
else if (strncmp (argv[i], "-o", 2) == 0)
{
/* Parse the output filename if it's given so that we can make
@@ -1048,7 +1052,7 @@ main (int argc, char **argv)
ld_file_name = 0;
#ifdef DEFAULT_LINKER
if (selected_linker == USE_BFD_LD || selected_linker == USE_GOLD_LD ||
- selected_linker == USE_LLD_LD)
+ selected_linker == USE_LLD_LD || selected_linker == USE_MOLD_LD)
{
char *linker_name;
# ifdef HOST_EXECUTABLE_SUFFIX
@@ -1317,7 +1319,7 @@
else if (!use_collect_ld
&& strncmp (arg, "-fuse-ld=", 9) == 0)
{
- /* Do not pass -fuse-ld={bfd|gold|lld} to the linker. */
+ /* Do not pass -fuse-ld={bfd|gold|lld|mold} to the linker. */
ld1--;
ld2--;
}
diff --git a/gcc/common.opt b/gcc/common.opt
index 2ed818d6057de..dba3fa886f9c6 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -3046,6 +3046,10 @@ fuse-ld=lld
Common Driver Negative(fuse-ld=lld)
Use the lld LLVM linker instead of the default linker.
+fuse-ld=mold
+Common Driver Negative(fuse-ld=mold)
+Use the Modern linker (MOLD) linker instead of the default linker.
+
fuse-linker-plugin
Common Undocumented Var(flag_use_linker_plugin)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index e644c63767b88..54fa75ba138ea 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -16266,6 +16266,10 @@ Use the @command{gold} linker instead of the default linker.
@opindex fuse-ld=lld
Use the LLVM @command{lld} linker instead of the default linker.
+@item -fuse-ld=mold
+@opindex fuse-ld=mold
+Use the Modern Linker (@command{mold}) instead of the default linker.
+
@cindex Libraries
@item -l@var{library}
@itemx -l @var{library}
diff --git a/gcc/gcc.c b/gcc/gcc.c
index b75b50b87b2bf..06e18a75b52cc 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -4282,6 +4282,10 @@ driver_handle_option (struct gcc_options *opts,
use_ld = ".gold";
break;
+ case OPT_fuse_ld_mold:
+ use_ld = ".mold";
+ break;
+
case OPT_fcompare_debug_second:
compare_debug_second = 1;
break;
diff --git a/gcc/opts.c b/gcc/opts.c
index e4e47ff77b3d7..f820052307c36 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -3105,6 +3105,7 @@ common_handle_option (struct gcc_options *opts,
case OPT_fuse_ld_bfd:
case OPT_fuse_ld_gold:
case OPT_fuse_ld_lld:
+ case OPT_fuse_ld_mold:
case OPT_fuse_linker_plugin:
/* No-op. Used by the driver and passed to us because it starts with f.*/
break;
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CaptainBlood
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Joined: 24 Jan 2010
Posts: 3595
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| Posted: Mon Jun 27, 2022 9:04 pm Post subject: |
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Awilum,
Interesting...
Sadly, currently building latest gcc-12.1.p20220625 on a low-end 4Gb desktop, with two curious failures caused by user level outrage,
the one from in between the chair & the kerboard. Pity me  .
Placing the patch in position still, waiting for the next upgrade.
It will be mainly for testing as lto is slowly spreading here & I'm unsure mold is at level with alternative there.
Thks 4 ur attention, interest & support.
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