FS#71212 - (linux-lts] gcc plugins compilation error with GCC 11
Attached to Project:
Arch Linux
Opened by singe infini (singeinfini) - Thursday, 10 June 2021, 18:39 GMT
Last edited by Andreas Radke (AndyRTR) - Monday, 21 June 2021, 19:16 GMT
Opened by singe infini (singeinfini) - Thursday, 10 June 2021, 18:39 GMT
Last edited by Andreas Radke (AndyRTR) - Monday, 21 June 2021, 19:16 GMT
|
Details
Description:
When compiling a custom LTS kernel with CONFIG_GCC_PLUGINS and the latest version of gcc, the following check in "scripts/gcc-plugins/Kconfig" will fail: depends on $(success,$(srctree)/scripts/gcc-plugin.sh $(CC)) causing the selected plugins not to be compiled. This is due to the use of the C++98 standard which leads to incompatibility issues at compile time with GCC 11: /usr/include/c++/11.1.0/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options. Thus this is necessary to patch the "scripts/gcc-plugin.sh" file and the "scripts/gcc-plugins/Makefile" in order to be able to compile the plugins. --- scripts/gcc-plugin.sh +++ scripts/gcc-plugin.sh @@ -11 +11 @@ -$HOSTCC -c -x c++ -std=gnu++98 - -fsyntax-only -I $srctree/gcc-plugins -I $gccplugins_dir/include 2>/dev/null <<EOF +$HOSTCC -c -x c++ -std=gnu++11 - -fsyntax-only -I $srctree/gcc-plugins -I $gccplugins_dir/include 2>/dev/null <<EOF --- scripts/gcc-plugins/Makefile +++ scripts/gcc-plugins/Makefile @@ -25 +25 @@ - -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++98 \ + -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++11 \ @@ -27 +27 @@ - -ggdb -Wno-narrowing -Wno-unused-variable -Wno-c++11-compat \ + -ggdb -Wno-narrowing -Wno-unused-variable \ Additional info: https://www.spinics.net/linux/fedora/fedora-kernel/msg10398.html |
This task depends upon
Closed by Andreas Radke (AndyRTR)
Monday, 21 June 2021, 19:16 GMT
Reason for closing: Upstream
Additional comments about closing: and no response.
Monday, 21 June 2021, 19:16 GMT
Reason for closing: Upstream
Additional comments about closing: and no response.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=67a5a68013056cbcf0a647e36cb6f4622fb6a470