path: root/CMakeLists.txt
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authorMÃ¥rten Nordheim <>2019-07-05 10:47:26 +0200
committerAlexandru Croitor <>2019-09-11 08:25:54 +0000
commit2cf0ba1fba9293b3265a186527dbc90d395dfd20 (patch)
tree4a25d77ccd7e201e01bfcbcf086370869c53cce4 /CMakeLists.txt
parent7df0868ad59dd071f2ce2dd355488128fa56f645 (diff)
Use pre-compiled headers when building Qt with cmake
Some modules define their own manually-maintained lists, and we can rely on the headers generated by each module to include in the pch as well e.g. QtCore/QtCore. There's also e.g. QtWidgetDepends for QtWidgets, but this only works for modules, not for tools, examples or other applications. For now we'll use the Qt<Module>/Qt<Module> headers for the modules we depend on. Building with PCH can be disabled with -DBUILD_WITH_PCH=NO, and it only works for versions of CMake newer than 3.15.20190829. Change-Id: Iae52bd69acfdfd58f4cd20d3cfa3c7f42775f732 Reviewed-by: Qt CMake Build Bot Reviewed-by: Alexandru Croitor <>
Diffstat (limited to 'CMakeLists.txt')
1 files changed, 3 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a45098efbf..a52bed4658 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,6 +41,9 @@ set(QT_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
## Should this Qt be built with Werror?
option(WARNINGS_ARE_ERRORS "Build Qt with warnings as errors" ${FEATURE_developer_build})
+## Should Qt be built using PCH?
+option(BUILD_WITH_PCH "Build Qt using precompiled headers?" ON)
## Decide whether tools will be built.