[virt-viewer] Add new module to build virt-viewer from source

1 files changed, 76 insertions, 0 deletions

diff --git a/core/bin/pkg-config.sh b/core/bin/pkg-config.sh
new file mode 100755
index 00000000..cd6abc0c
--- /dev/null
+++ b/core/bin/pkg-config.sh
@@ -0,0 +1,76 @@
+#!/bin/bash
+
+# Function to check if diretory exists and is not empty
+# Param 1: Path to the directory
+# Return : True (0) if directory exists and is not empty, otherwise false (1)
+function pkg_config_non_empty_dir() {
+	local DIR="${1}"
+
+	if [ -d "${DIR}" ] && [ -n "$(ls -A "${DIR}")" ]; then
+		return 0;
+	else
+		return 1;
+	fi
+}
+
+# Function to process given directory and patch system root directory if necessary
+#
+# First, all system directories (path without system root prefix) are processed.
+# Afterwards, all system root directories are checked (path with system root prefix).
+#
+# Param 1: Option of the argument, e.g. '-I'
+# Param 2: Path to the directory (value of the argument) with/without prefixed '${PKG_CONFIG_SYSROOT_DIR}'
+function pkg_config_process_dir() {
+	local DIR_OPTION="${1}"
+	local DIR_WTH_SYSROOT="${2}"
+	local DIR_NON_SYSROOT="${DIR_WTH_SYSROOT##${PKG_CONFIG_SYSROOT_DIR}}"
+
+	if pkg_config_non_empty_dir "${DIR_WTH_SYSROOT}"; then
+		echo -n "${DIR_OPTION}${DIR_WTH_SYSROOT} "
+	else
+		if pkg_config_non_empty_dir "${DIR_NON_SYSROOT}"; then
+			echo -n "${DIR_OPTION}${DIR_NON_SYSROOT} "
+		else
+			[[ "${DIR_WTH_SYSROOT}" == "${DIR_NON_SYSROOT}" ]] && \
+				echo -n "Directory '${DIR_WTH_SYSROOT}' does not exist!" || \
+				echo -n "Directory '${DIR_WTH_SYSROOT}' or '${DIR_NON_SYSROOT}' does not exist!"
+			exit 1;
+		fi
+	fi
+}
+
+# Function to patch output of original pkg-config to fix include and library paths
+# Param 1..n: Output of original pkg-config as separated commands
+# Return    : Patched output of the original pkg-config input.
+function pkg_config_patch_sysroot() {
+
+	# process all passed parameters
+	for PARAM in "${@}"; do
+		case "${PARAM}" in
+			-I*)
+				pkg_config_process_dir "-I" "${PARAM##-I}"
+				;;
+			-L*)
+				pkg_config_process_dir "-L" "${PARAM##-L}"
+				;;
+			*)
+				echo -n "${PARAM} "
+				;;
+		esac
+	done
+
+	echo
+}
+
+# execute original pkg-config and save output and return code
+PKG_CONFIG_OUTPUT="$($(which "pkg-config") "${@}")"
+PKG_CONFIG_RETVAL=${?}
+
+# abort with exit code if pkg-config call failed
+if [[ ${PKG_CONFIG_RETVAL} -ne 0 ]]; then
+	echo "${PKG_CONFIG_OUTPUT}"
+	exit ${PKG_CONFIG_RETVAL}
+fi
+
+# patch system root directory in pkg-config output
+pkg_config_patch_sysroot ${PKG_CONFIG_OUTPUT}