ci: Introduce the matrix build

Provide a matrix builder for all compilers detected on this system.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 156 insertions, 0 deletions

diff --git a/10-build-matrix.sh b/10-build-matrix.sh
new file mode 100755
index 0000000..6aebd7a
--- /dev/null
+++ b/10-build-matrix.sh
@@ -0,0 +1,156 @@
+#!/bin/bash
+
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Compile test builder.
+#
+# Call a meson/ninja build with all combinations of gcc/clang identifyied in
+# the path using compgen. Builds are left in tree, allowing incremental builds
+# on each call.
+
+
+source ./common.sh
+
+LIBCAMERA=${1:-$(pwd)/libcamera}
+ID=build-matrix
+
+check_version $LIBCAMERA $ID
+
+echo "Build-matrix for libcamera at version : " $(libcamera_version "$LIBCAMERA")
+
+## Identify supported compilers
+
+# CLANG uses clang and clang++
+function find_clang_compilers() {
+	compgen -c clang | grep -E "^clang[++]*-[0-9]+"
+}
+
+# GCC uses g++ and gcc
+function find_gcc_compilers() {
+	compgen -c gcc | grep -E "^gcc-[0-9]+"
+	compgen -c g++ | grep -E "^g\+\+-[0-9]+"
+}
+
+gccs=$(find_gcc_compilers)
+clangs=$(find_clang_compilers)
+
+# Given a list of xxx-[0-9]+ return a list of
+# [0-9]+ where two occurences appear in the list.
+function filter_version_pairs() {
+	for v in "$@";
+		do echo "$v" | sed 's/.*-//';
+	done | sort -n | uniq -d;
+}
+
+configurations=()
+
+# Generate a list of compiler configurations where both the C and C++ compiler
+# have been identified
+for v in $(filter_version_pairs $gccs); do
+	configurations+="gcc-$v:g++-$v "
+done;
+
+for v in $(filter_version_pairs $clangs); do
+	configurations+="clang-$v:clang++-$v "
+done;
+
+#### Building and compiling
+
+function build() {
+	echo "Building for $1"
+
+	BUILDDIR="$(builddir $ID)/$1"
+	CC="$1"
+	CXX="$2"
+
+	echo "Checking for libcamera builddir: $BUILDDIR"
+
+	if [ ! -d "$BUILDDIR" ]; then
+		CC=$CC \
+		CXX=$CXX \
+		meson "$BUILDDIR" "$LIBCAMERA" \
+			-Dv4l2=true \
+			-Dandroid=enabled \
+			-Ddocumentation=disabled \
+			-Dgstreamer=enabled
+	fi
+
+	ninja -C "$BUILDDIR"
+}
+
+function build_simple_cam() {
+	LIBCAMERA_BUILD="$(builddir $ID)/$1"
+	LIBCAMERA_BUILD=$(realpath -L $LIBCAMERA_BUILD/meson-uninstalled/)
+
+	CC="$1"
+	CXX="$2"
+
+	SIMPLE_CAM=./simple-cam
+
+	if [ ! -d $SIMPLE_CAM ]; then
+		git clone https://git.libcamera.org/libcamera/simple-cam.git
+	fi
+
+	echo Using: $LIBCAMERA_BUILD
+
+	cd $SIMPLE_CAM
+	git pull --ff-only
+
+	BUILDDIR="$(builddir $ID)/$1-simple-cam"
+
+	# Always build simple-cam from clean
+	rm -fr "$BUILDDIR"
+
+	PKG_CONFIG_PATH=$LIBCAMERA_BUILD \
+	CC=$CC \
+	CXX=$CXX \
+		meson "$BUILDDIR"
+
+	ninja -C "$BUILDDIR"
+	ret=$?
+
+	cd ..
+
+	return $ret
+}
+
+mkdir -p $(builddir $ID)
+
+echo "Identified toolchain configurations:"
+
+for conf in ${configurations}
+do
+	# Split gcc-7:g++-7 to gcc-7 g++-7
+	parsed=(${conf//:/ })
+
+	echo "    Configuration: $conf"
+done
+echo
+
+echo "Commencing builds:"
+
+for conf in ${configurations}
+do
+	# Split gcc-7:g++-7 to gcc-7 g++-7
+	parsed=(${conf//:/ })
+
+	toolchain=${parsed[0]}
+	logfile=$(log_filename $ID-$toolchain)
+
+	echo "Configuration: $conf ($logfile)"
+
+	build ${parsed[@]} > $logfile
+	pass_fail $? "libcamera $toolchain:"
+
+	build_simple_cam ${parsed[@]} >> $logfile
+	#pass_fail $? "simple-cam $toolchain:"
+
+done
+
+# Summarise build results
+BUILDDIR="$(builddir $ID)/$1"
+
+(cd $(builddir $ID) && ls -alh -sv */src/libcamera/libcamera.so)
+
+completed $ID
+