From: Richard Purdie <richard.purdie@linuxfoundation.org>
To: gcc-patches@gcc.gnu.org
Subject: [PATCH 5/5] gcc: Pass sysroot options to cpp for preprocessed source
Date: Wed, 27 Oct 2021 21:05:05 +0100 [thread overview]
Message-ID: <20211027200505.3340725-6-richard.purdie@linuxfoundation.org> (raw)
In-Reply-To: <20211027200505.3340725-1-richard.purdie@linuxfoundation.org>
OpenEmbedded/Yocto Project extensively uses the --sysroot support within gcc.
We discovered that when compiling preprocessed source (.i or .ii files), the
compiler will try and access the builtin sysroot location rather than the
--sysroot option specified on the commandline. If access to that directory is
permission denied (unreadable), gcc will error. This is particularly problematic
when ccache is involved.
This patch adds %I to the cpp-output spec macro so the default substitutions for
-iprefix, -isystem, -isysroot happen and the correct sysroot is used.
2021-10-27 Richard Purdie <richard.purdie@linuxfoundation.org>
gcc/cp/ChangeLog:
* lang-specs.h: Pass sysroot options to cpp for preprocessed source
gcc/ChangeLog:
* gcc.c: Pass sysroot options to cpp for preprocessed source
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
gcc/cp/lang-specs.h | 2 +-
gcc/gcc.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/gcc/cp/lang-specs.h b/gcc/cp/lang-specs.h
index 8902ae1d2ed..e99e2fcd6ad 100644
--- a/gcc/cp/lang-specs.h
+++ b/gcc/cp/lang-specs.h
@@ -116,7 +116,7 @@ along with GCC; see the file COPYING3. If not see
{".ii", "@c++-cpp-output", 0, 0, 0},
{"@c++-cpp-output",
"%{!E:%{!M:%{!MM:"
- " cc1plus -fpreprocessed %i %(cc1_options) %2"
+ " cc1plus -fpreprocessed %i %I %(cc1_options) %2"
" %{!fsyntax-only:"
" %{fmodule-only:%{!S:-o %g.s%V}}"
" %{!fmodule-only:%{!fmodule-header*:%(invoke_as)}}}"
diff --git a/gcc/gcc.c b/gcc/gcc.c
index abb900a4247..51176becb86 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1472,7 +1472,7 @@ static const struct compiler default_compilers[] =
%W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
{".i", "@cpp-output", 0, 0, 0},
{"@cpp-output",
- "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %I %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
{".s", "@assembler", 0, 0, 0},
{"@assembler",
"%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
--
2.25.1
next prev parent reply other threads:[~2021-10-27 20:05 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-27 20:05 [PATCH 0/5] OpenEmbedded/Yocto Project gcc patches Richard Purdie
2021-10-27 20:05 ` [PATCH 1/5] Makefile.in: Ensure build CPP/CPPFLAGS is used for build targets Richard Purdie
2021-10-28 7:04 ` Richard Biener
2021-10-28 14:43 ` Jeff Law
2021-10-27 20:05 ` [PATCH 2/5] gcc: Fix "argument list too long" from install-plugins Richard Purdie
2021-10-27 20:54 ` Bernhard Reutner-Fischer
2021-12-03 3:01 ` Jeff Law
2021-10-27 20:05 ` [PATCH 3/5] gcc: Add --nostdlib++ option Richard Purdie
2021-10-27 20:56 ` Bernhard Reutner-Fischer
2021-10-28 16:41 ` Richard Purdie
2021-12-03 3:05 ` Jeff Law
2021-10-28 14:51 ` Jeff Law
2021-10-28 16:39 ` Richard Purdie
2021-12-03 3:04 ` Jeff Law
2021-12-05 11:43 ` Richard Purdie
2021-12-06 6:10 ` Fāng-ruì Sòng
2021-10-27 20:05 ` [PATCH 4/5] gcc/nios2: Define the musl linker Richard Purdie
2021-10-28 14:46 ` Jeff Law
2021-10-27 20:05 ` Richard Purdie [this message]
2021-12-14 23:47 ` [PATCH 5/5] gcc: Pass sysroot options to cpp for preprocessed source Jeff Law
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