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List:       openembedded-core
Subject:    [OE-core][kirkstone 11/13] cmake: add CMAKE_SYSROOT to generated toolchain file
From:       "Steve Sakoman" <steve () sakoman ! com>
Date:       2023-04-29 17:20:31
Message-ID: 1105c67d554bcd155e8247cb16efc8d6a642444f.1682788726.git.steve () sakoman ! com
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From: Pascal Bach <pascal.bach@siemens.com>

This already got fixed in the toolchain file that is used during development
in https://github.com/openembedded/openembedded-core/commit/cb42802f2fe1760f894a435b07286bca3a220364

The toolchain file generated by the cmake.bbclass however does not set
CMAKE_SYSROOT. Under certain circumstances this also leads to the error:
`"stdlib.h: No such file or directory #include_next <stdlib.h>"`
during the build of a recipe.

An example where this accured was during the upgrade of the Apache Thrift
recipe in meta-openembedded to 0.11.0. With this change the build works out of
the box.

CMAKE_SYSROOT must only be set when crosscompiling, otherwise it will interfere
with the native compiler headers.

Signed-off-by: Pascal Bach <pascal.bach@siemens.com>

(from http://lists.openembedded.org/pipermail/openembedded-core/2018-August/154791.html )

Signed-off-by: Mikko Rapeli <mikko.rapeli@bmw.de>
Signed-off-by: Poonam Jadhav <poonam.jadhav@kpit.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
 meta/classes/cmake.bbclass | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/meta/classes/cmake.bbclass b/meta/classes/cmake.bbclass
index d9bcddbdbb..7ec6ca58fc 100644
--- a/meta/classes/cmake.bbclass
+++ b/meta/classes/cmake.bbclass
@@ -85,9 +85,12 @@ def map_host_arch_to_uname_arch(host_arch):
         return "ppc64"
     return host_arch
 
+
 cmake_do_generate_toolchain_file() {
 	if [ "${BUILD_SYS}" = "${HOST_SYS}" ]; then
 		cmake_crosscompiling="set( CMAKE_CROSSCOMPILING FALSE )"
+	else
+		cmake_sysroot="set( CMAKE_SYSROOT \"${RECIPE_SYSROOT}\" )"
 	fi
 	cat > ${WORKDIR}/toolchain.cmake <<EOF
 # CMake system name must be something like "Linux".
@@ -120,6 +123,8 @@ set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
 set( CMAKE_PROGRAM_PATH "/" )
 
+$cmake_sysroot
+
 # Use qt.conf settings
 set( ENV{QT_CONF_PATH} ${WORKDIR}/qt.conf )
 
-- 
2.34.1



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