Add option to enable code coverage support when building RPMs

To enable building RPMs with code coverage support `-Dwith_coverage=1`
parameter can be passed to rpmbuild. Code coverage support is turned
off by default when building RPMs.

Related: #397
Signed-off-by: Artiom Divak <adivak@redhat.com>

README.developer.md

@@ -335,6 +335,8 @@ The package build process can be adjusted using following environment variables:
   - To skip installation of build dependencies this option should contain `yes` value.
 - `WITH_PYTHON`
   - To skip building python bluechi modules this option should contain `0`.
+- `WITH_COVERAGE`
+  - To start collecting coverage this option should contain `1`.
 
 So for example following command will skip build dependencies installation and store create RPM packages into `output`
 subdirectory:

bluechi.spec.in

@@ -3,6 +3,10 @@
 %global with_python 1
 %endif
 
+# coverage collection is disabled by default , it can be enabled passing `--define "with_coverage 1"` option to rpmbuild
+%if 0%{?with_coverage} 
+%global coverage_flags -Dwith_coverage=true
+%endif
 
 Name:    bluechi
 Version: @VERSION@
@@ -203,7 +207,7 @@ API description and manually written code to simplify recurring tasks.
 %autosetup
 
 %build
-%meson -Dapi_bus=system
+%meson -Dapi_bus=system %{?coverage_flags}
 %meson_build
 
 %if %{with_python}

build-scripts/build-rpm.sh

@@ -12,6 +12,7 @@ fi
 rpmbuild \
     --define "_topmdir rpmbuild" \
     --define "_rpmdir rpmbuild" \
+    --define "with_coverage ${WITH_COVERAGE:=0}"\
     --define "with_python ${WITH_PYTHON:=1}" \
     --rebuild rpmbuild/SRPMS/*src.rpm
 

test.txt

@@ -0,0 +1,42 @@
+Directory already configured.
+
+Just run your build command (e.g. ninja) and Meson will regenerate as necessary.
+If ninja fails, run "ninja reconfigure" or "meson setup --reconfigure"
+to force Meson to regenerate.
+
+If build failures persist, run "meson setup --wipe" to rebuild from scratch
+using the same options as passed when configuring the build.
+To change option values, run "meson configure" instead.
+Entering 'subprojects/hashmap.c'
+Entering 'subprojects/inih'
+setting SOURCE_DATE_EPOCH=1693785600
+Wrote: rpmbuild/SRPMS/bluechi-0.6.0-0.202309141037.git68fd4bd.fc37.src.rpm
+RHEL8 CSB packages                              0.0  B/s |   0  B     00:00    
+Last metadata expiration check: 0:26:18 ago on Thu 14 Sep 2023 10:10:52 AM IDT.
+Package checkpolicy-3.5-1.fc37.x86_64 is already installed.
+Package gcc-12.3.1-1.fc37.x86_64 is already installed.
+Package gcc-c++-12.3.1-1.fc37.x86_64 is already installed.
+Package golang-github-cpuguy83-md2man-2.0.2-4.fc37.x86_64 is already installed.
+Package meson-1.0.1-1.fc37.noarch is already installed.
+Package python3-devel-3.11.4-1.fc37.x86_64 is already installed.
+Package python3-setuptools-62.6.0-3.fc37.noarch is already installed.
+Package selinux-policy-devel-37.22-1.fc37.noarch is already installed.
+Package systemd-devel-251.14-2.fc37.x86_64 is already installed.
+Package systemd-rpm-macros-251.14-2.fc37.noarch is already installed.
+Package checkpolicy-3.5-1.fc37.x86_64 is already installed.
+Package gcc-12.3.1-1.fc37.x86_64 is already installed.
+Package gcc-c++-12.3.1-1.fc37.x86_64 is already installed.
+Package golang-github-cpuguy83-md2man-2.0.2-4.fc37.x86_64 is already installed.
+Package meson-1.0.1-1.fc37.noarch is already installed.
+Package python3-devel-3.11.4-1.fc37.x86_64 is already installed.
+Package python3-setuptools-62.6.0-3.fc37.noarch is already installed.
+Package selinux-policy-devel-37.22-1.fc37.noarch is already installed.
+Package systemd-devel-251.14-2.fc37.x86_64 is already installed.
+Package systemd-rpm-macros-251.14-2.fc37.noarch is already installed.
+Dependencies resolved.
+Nothing to do.
+Complete!
+Installing rpmbuild/SRPMS/bluechi-0.6.0-0.202309141036.git68fd4bd.fc37.src.rpm
+setting SOURCE_DATE_EPOCH=1693785600
+Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.6dUQhj
+Executing(%build): /bin/sh -e /var/tmp/rpm-tmp.TvLNpn