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Add support for building with gcov

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gcov is useful for coverage testing. Add support for building the kernel.
This commit is contained in:
Laura Abbott 2019-10-17 16:38:26 -04:00
parent f691fd9d87
commit a17ef5964d
1 changed files with 44 additions and 3 deletions
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47
kernel.spec
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@ -121,6 +121,9 @@ Summary: The Linux kernel
# verbose build, i.e. no silent rules and V=1
%define with_verbose %{?_with_verbose: 1} %{?!_with_verbose: 0}
# gcov support
%define with_gcov %{?_with_gcov: 1} %{?!_with_gcov: 0}
# Set debugbuildsenabled to 1 for production (build separate debug kernels)
# and 0 for rawhide (all kernels are debug kernels).
# See also 'make debug' and 'make release'.
@ -166,6 +169,15 @@ Summary: The Linux kernel
# The kernel tarball/base version
%define kversion 5.%{base_sublevel}
# turn off debug kernel and kabichk for gcov builds
%if %{with_gcov}
%define with_debug 0
%define with_kabichk 0
%define with_kabidupchk 0
%define with_kabidwchk 0
%endif
%define make_target bzImage
%define image_install_path boot
@ -631,6 +643,13 @@ Provides: installonlypkg(kernel)
This package is required by %{name}-debuginfo subpackages.
It provides the kernel source files common to all builds.
%if %{with_gcov}
%package gcov
Summary: gcov graph and source files for coverage data collection.
%description gcov
kernel-gcov includes the gcov graph and source files for gcov coverage collection.
%endif
#
# This macro creates a kernel-<subpackage>-debuginfo package.
# %%kernel_debuginfo_package <subpackage>
@ -776,7 +795,6 @@ Linux operating system. The kernel handles the basic functions
of the operating system: memory allocation, process allocation, device
input and output, etc.
%prep
# do a few sanity-checks for --with *only builds
%if %{with_baseonly}
@ -1027,6 +1045,14 @@ CheckConfigs() {
fi
}
# enable GCOV kernel config options if gcov is on
%if %{with_gcov}
for i in *.config
do
sed -i 's/# CONFIG_GCOV_KERNEL is not set/CONFIG_GCOV_KERNEL=y\nCONFIG_GCOV_PROFILE_ALL=y\n/' $i
done
%endif
cp %{SOURCE42} .
OPTS=""
%if %{listnewconfig_fail}
@ -1156,9 +1182,9 @@ BuildKernel() {
# This ensures build-ids are unique to allow parallel debuginfo
perl -p -i -e "s/^CONFIG_BUILD_SALT.*/CONFIG_BUILD_SALT=\"%{KVERREL}\"/" .config
%{make} %{?make_opts} HOSTCFLAGS="%{?build_hostcflags}" HOSTLDFLAGS="%{?build_hostldflags}" ARCH=$Arch %{?_smp_mflags} $MakeTarget %{?sparse_mflags} %{?kernel_mflags}
%{make} %{?make_opts} HOSTCFLAGS="%{?build_hostcflags}" HOSTLDFLAGS="%{?build_hostldflags}" ARCH=$Arch %{?_smp_mflags} WITH_GCOV="%{with_gcov}" $MakeTarget %{?sparse_mflags} %{?kernel_mflags}
if [ $DoModules -eq 1 ]; then
%{make} %{?make_opts} HOSTCFLAGS="%{?build_hostcflags}" HOSTLDFLAGS="%{?build_hostldflags}" ARCH=$Arch %{?_smp_mflags} modules %{?sparse_mflags} || exit 1
%{make} %{?make_opts} HOSTCFLAGS="%{?build_hostcflags}" HOSTLDFLAGS="%{?build_hostldflags}" ARCH=$Arch %{?_smp_mflags} WITH_GCOV="%{with_gcov}" modules %{?sparse_mflags} || exit 1
fi
mkdir -p $RPM_BUILD_ROOT/%{image_install_path}
@ -1214,6 +1240,14 @@ BuildKernel() {
%{make} %{?make_opts} ARCH=$Arch INSTALL_MOD_PATH=$RPM_BUILD_ROOT modules_install KERNELRELEASE=$KernelVer mod-fw=
fi
%if %{with_gcov}
# install gcov-needed files to $BUILDROOT/$BUILD/...:
# gcov_info->filename is absolute path
# gcno references to sources can use absolute paths (e.g. in out-of-tree builds)
# sysfs symlink targets (set up at compile time) use absolute paths to BUILD dir
find . \( -name '*.gcno' -o -name '*.[chS]' \) -exec install -D '{}' "$RPM_BUILD_ROOT/$(pwd)/{}" \;
%endif
# add an a noop %%defattr statement 'cause rpm doesn't like empty file list files
echo '%%defattr(-,-,-)' > ../kernel${Flavour:+-${Flavour}}-ldsoconf.list
if [ $DoVDSO -ne 0 ]; then
@ -1724,6 +1758,13 @@ fi
# empty meta-package
%files
%if %{with_gcov}
%ifarch x86_64 s390x ppc64le aarch64
%files gcov
%{_builddir}
%endif
%endif
# This is %%{image_install_path} on an arch where that includes ELF files,
# or empty otherwise.
%define elf_image_install_path %{?kernel_image_elf:%{image_install_path}}