import qbs.Process import qbs.Utilities // Don't forget to edit ccache config: // ccache --set-config=sloppiness=pch_defines,time_macros,include_file_mtime,include_file_ctime Module { readonly property bool ccachePresent: ccacheProbe.present readonly property bool pchSupport: ccachePCHProbe.pchSupport // change to shell tool which supports key "-c" to excecute command line property string shellTool: "bash" // ccache doesn't provide key to get only version number readonly property string command: "ccache --version | head -n 1 | grep -oE '[0-9]((\.)[0-9]){0,2}'" Probe { id: ccacheProbe property bool present property string tool: shellTool property string toolCommand: command configure: { var detector = new Process(); try { if (detector.exec(tool, ["-c", toolCommand]) === 0) { var version = detector.readStdOut().trim(); // we can read only one time present = Utilities.versionCompare(version, "0.0.0") >= 0; console.info("Found ccache version " + version + "."); } } finally { detector.close(); } } } Probe { id: ccachePCHProbe condition: ccachePresent === true property string tool: shellTool property string toolCommand: command property bool pchSupport readonly property bool clangToolchain: product.qbs.toolchain.contains("gcc") && product.qbs.toolchain.contains("clang") configure: { var detector = new Process(); try { if (detector.exec(tool, ["-c", toolCommand]) === 0) { var version = detector.readStdOut().trim(); // we can read only one time pchSupport = Utilities.versionCompare(version, "3.1.0") >= 0; if (!pchSupport){ console.info("ccache is tool old, version >= 3.1.0 required to work with precompiled headers."); pchSupport = false; }else{ if (clangToolchain) { if (Utilities.versionCompare(version, "4.6") < 0) { console.info("ccache version < 4.6 is not compatible with Clang and precompiled headers."); pchSupport = false; } } else { console.info("ccache supports compilation with precompiled headers."); } } } } finally { detector.close(); } } } }