cb09e1e889
We'll use the master depends header for the module as the precompilation header. We could use the master include, but tests show that precompilation benefits taper off for big precompiled headers. The important part is to get the Standard Library headers precompiled. Each module can still override which header to precompile by setting PRECOMPILED_HEADER after load(qt_modules). It can also turn off precompiled headers by setting that to empty or by CONFIG -= precompile_header. Testing a few build times shows the following improvements (GCC 4.8 with -O3 and C++11): QtPrintSupport: 14.7% QtOpenGL: 22.7% QtDBus: 29.5% QtSvg: -2.4% QtXmlPatterns: 26.1% QtQml: 21.6% QtQuick: 25.0% QtMultimedia: 9.0% QtSerialPort: -30.0% QtHelp: 5.6% The numbers also show that precompilation is worse for small modules. Change-Id: I3793fafcedaff5456527cd6b3777ffd162975c36 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
70 lines
2.3 KiB
Plaintext
70 lines
2.3 KiB
Plaintext
#
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# W A R N I N G
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# -------------
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#
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# This file is not part of the Qt API. It exists purely as an
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# implementation detail. It may change from version to version
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# without notice, or even be removed.
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#
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# We mean it.
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#
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load(qt_build_paths)
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!build_pass:git_build {
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qtPrepareTool(QMAKE_SYNCQT, syncqt)
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minimal_syncqt {
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QMAKE_SYNCQT += -minimal $$QMAKE_SYNCQT_OPTIONS
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} else {
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contains(QT_CONFIG, private_tests): \ # -developer-build
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QMAKE_SYNCQT += -check-includes
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QMAKE_SYNCQT += -module $$MODULE_INCNAME -version $$VERSION
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}
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QMAKE_SYNCQT += \
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-outdir $$MODULE_BASE_OUTDIR $$MODULE_SYNCQT_DIR
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!silent: message($$QMAKE_SYNCQT)
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system($$QMAKE_SYNCQT)|error("Failed to run: $$QMAKE_SYNCQT")
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}
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minimal_syncqt: return()
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#load up the headers info
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git_build: \
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INC_PATH = $$MODULE_BASE_OUTDIR
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else: \
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INC_PATH = $$MODULE_BASE_INDIR
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include($$INC_PATH/include/$$MODULE_INCNAME/headers.pri, "", true)
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for (injection, SYNCQT.INJECTIONS) {
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injects = $$split(injection, :)
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fwd_hdr = $$member(injects, 1)
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MAIN_FWD = $$INC_PATH/include/$$MODULE_INCNAME/$$fwd_hdr
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MAIN_FWD_CONT = '$${LITERAL_HASH}include "$$member(injects, 0)"'
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write_file($$MAIN_FWD, MAIN_FWD_CONT)|error("Aborting.")
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injects = $$member(injects, 2, -1)
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for (inject, injects) {
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CLASS_FWD = $$INC_PATH/include/$$MODULE_INCNAME/$$inject
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CLASS_FWD_CONT = '$${LITERAL_HASH}include "$$fwd_hdr"'
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write_file($$CLASS_FWD, CLASS_FWD_CONT)|error("Aborting.")
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}
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}
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autogen_warning = \
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"/* This file was generated by qmake with the info from <root>/$$relative_path($$_PRO_FILE_, $$MODULE_BASE_INDIR). */"
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# Create a module master depends header
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MODULE_MASTER_DEPS_HEADER = $$MODULE_BASE_OUTDIR/include/$$MODULE_INCNAME/$${MODULE_INCNAME}Depends
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!build_pass {
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MODULE_MASTER_DEPS_HEADER_CONT = $$autogen_warning
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for(dep, MODULE_DEPENDS) {
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depname = $$eval(QT.$${dep}.name)
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MODULE_MASTER_DEPS_HEADER_CONT += "$${LITERAL_HASH}include <$$depname/$$depname>"
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}
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write_file($$MODULE_MASTER_DEPS_HEADER, MODULE_MASTER_DEPS_HEADER_CONT)|error("Aborting.")
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}
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SYNCQT.HEADER_FILES += $$MODULE_MASTER_DEPS_HEADER
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isEmpty(PRECOMPILED_HEADER): PRECOMPILED_HEADER = $$MODULE_MASTER_DEPS_HEADER
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CONFIG += qt_install_headers
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