[Buildroot] [Bug 11016] Wrong compiler used for external user host packages

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11016

--- Comment #1 from Dr I J Ormshaw <ian_ormshaw at waters.com> ---
The CMakeLists file used with that config was:

cmake_minimum_required(VERSION 3.0.2)
project(linuxLibraries)

set(CMAKE_C_STANDARD_REQUIRED -std=gnu++14)
add_compile_options(-fPIC -Wall -Wextra -Werror)

add_subdirectory(libTime)
add_subdirectory(libLock)
add_subdirectory(libRegularExpression)
add_subdirectory(libApplication)
add_subdirectory(libStatistic)
add_subdirectory(libSocket)
add_subdirectory(libXmlDocument)
add_subdirectory(libFifo)
add_subdirectory(libHash)
add_subdirectory(libDiskEvents)

The make file:

################################################################################
#
# amstLinuxLibraries
#
################################################################################
AMSTLINUXLIBRARIES_COMMON_CXX_FLAGS = -fPIC -Wall -Wextra -Werror -std=gnu++14

AMSTLINUXLIBRARIES_VERSION           = 0.0.1
AMSTLINUXLIBRARIES_SITE              = $(BR2_EXTERNAL)/source/libraries
AMSTLINUXLIBRARIES_SITE_METHOD       = local
AMSTLINUXLIBRARIES_DEPENDENCIES      = host-amstLinuxLibraries
AMSTLINUXLIBRARIES_INSTALL_TARGET    = YES
AMSTLINUXLIBRARIES_INSTALL_STAGING   = YES
AMSTLINUXLIBRARIES_CONF_OPTS         =
-DCMAKE_CXX_FLAGS="$(AMSTLINUXLIBRARIES_COMMON_CXX_FLAGS)"
-DAMSTLINUXLIBRARIES=On
HOST_AMSTLINUXLIBRARIES_CONF_OPTS    = -DCMAKE_CXX_FLAGS="$(HOST_CPPFLAGS)
$(AMSTLINUXLIBRARIES_COMMON_CXX_FLAGS)" -DAMSTLINUXLIBRARIES=On

$(eval $(cmake-package))
$(eval $(host-cmake-package))

was origionally used with:

cmake_minimum_required(VERSION 3.0.2)
project(linuxLibraries)

add_subdirectory(libTime)
add_subdirectory(libLock)
add_subdirectory(libRegularExpression)
add_subdirectory(libApplication)
add_subdirectory(libStatistic)
add_subdirectory(libSocket)
add_subdirectory(libXmlDocument)
add_subdirectory(libFifo)
add_subdirectory(libHash)
add_subdirectory(libDiskEvents)

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