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xen, xen-tools: pass prefix maps to fix buildpaths reproducible build issues

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To fix warnings when the buildpaths QA test is enabled, pass the file
and debug prefix map options that were previously supplied only for
reproducible builds, adding them to the DEBUG_PREFIX_MAP variable
and supplying that to CC.

Testing indicates that passing the prefix maps needs to be via CC
rather than the EXTRA_CFLAGS_XEN_CORE/TOOLS variables.

Signed-off-by: Christopher Clark <christopher.w.clark@gmail.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
This commit is contained in:
Christopher Clark 2022-07-09 22:42:16 -07:00 committed by Bruce Ashfield
parent aa0ac74a03
commit 40a4c292e3
1 changed files with 10 additions and 11 deletions
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21
recipes-extended/xen/xen.inc
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@ -88,12 +88,13 @@ export CROSS_COMPILE="${TARGET_PREFIX}"
# overide LDFLAGS to allow xen to build without: "x86_64-oe-linux-ld: unrecognized option '-Wl,-O1'"
export LDFLAGS=""
# Pass through the Yocto distro compiler flags via the Xen-provided variables.
# Special handling:
# - The Yocto distro compiler flags are typically set to be appropriate for
# user-space software rather than for generation of a hypervisor binary, so
# only pass the debug prefix map to the hypervisor build:
EXTRA_CFLAGS_XEN_CORE="${DEBUG_PREFIX_MAP}"
# No additional C flags for the main hypervisor build
EXTRA_CFLAGS_XEN_CORE ?= ""
# Add prefix maps to support buildpaths QA test and reproducibility
DEBUG_PREFIX_MAP:append = " \
-ffile-prefix-map=${S}=${PN}-source \
-fdebug-prefix-map=${WORKDIR}=${PN} \
"
# - The Xen tools build for x86 systems with HVM-mode enabled includes hvmloader
# which fails to build when "-m64" is included in flags set via the
@ -109,11 +110,11 @@ TUNE_CCARGS:x86-64=""
# It must not be compiled with SSE compiler options enabled and the Xen build
# explicitly clears CFLAGS to ensure that, so such options must not be passed
# in via the tool variable. hvmloader is required to run HVM-mode guest VMs.
CC="${CCACHE}${HOST_PREFIX}gcc ${TOOLCHAIN_OPTIONS} ${CC_REPRODUCIBLE_OPTIONS}"
CC="${CCACHE}${HOST_PREFIX}gcc ${TOOLCHAIN_OPTIONS} ${DEBUG_PREFIX_MAP} ${CC_REPRODUCIBLE_OPTIONS}"
EXTRA_CFLAGS_XEN_TOOLS="${HOST_CC_ARCH} ${CFLAGS}"
# 32-bit ARM needs the TUNE_CCARGS component of HOST_CC_ARCH to be passed
# in CC to ensure that configure can compile binaries for the right arch.
CC:arm="${CCACHE}${HOST_PREFIX}gcc ${TUNE_CCARGS} ${TOOLCHAIN_OPTIONS} ${CC_REPRODUCIBLE_OPTIONS}"
CC:arm="${CCACHE}${HOST_PREFIX}gcc ${TUNE_CCARGS} ${TOOLCHAIN_OPTIONS} ${DEBUG_PREFIX_MAP} ${CC_REPRODUCIBLE_OPTIONS}"
# There are no Xen-provided variables for C++, so append to the tool variables:
CPP:append = " ${CPPFLAGS}"
@ -158,9 +159,7 @@ EXTRA_OEMAKE += "${@['', 'XEN_WHOAMI=${PF} XEN_DOMAIN=${DISTRO} XEN_BUILD_HOST=$
[d.getVar('BUILD_REPRODUCIBLE_BINARIES') == '1']}${@get_build_time_vars(d)}"
# Improve build reproducibility: compiler flags to remove filesystem differences.
CC_REPRODUCIBLE_OPTIONS = "${@['', '-gno-record-gcc-switches ' + \
'-ffile-prefix-map=${S}=${PN}-source ' + \
'-fdebug-prefix-map=${WORKDIR}=${PN}'] \
CC_REPRODUCIBLE_OPTIONS = "${@['', '-gno-record-gcc-switches'] \
[d.getVar('BUILD_REPRODUCIBLE_BINARIES') == '1']}"
# check for XSM in package config to allow XSM_ENABLE to be set