path: root/mkspecs/unsupported
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authorThiago Macieira <>2015-06-02 11:10:22 -0700
committerThiago Macieira <>2015-09-13 18:54:17 +0000
commit72ba0079c3967bdfa26acdce78ce6cb98b30c27b (patch)
tree82640d9ff8a9d733276041a2ddd57483ef0d23b6 /mkspecs/unsupported
parent181c8d80d19f975ccf943fa79107f1e839e33e68 (diff)
Add a linker version script to Qt libraries
This linker script is only enabled for systems with GCC or GCC-like compilers, though technically it should work on the BSDs too (will enable after testing). For regular modules, this declares one ELF version "Qt_5" and places all QtCore symbols inside, then it declares unused ELF versions "Qt_5.x" for each older minor release. For modules declared "internal_module", all symbols are placed in version Qt_5_PRIVATE_API. The big advantage of an ELF version is that, when we do Qt 6, both versions of QtCore could be loaded in memory without conflicts and all symbols would be resolved to the correct library. No module can talk to both at the same time, but this avoids mistakes of loading them indirectly by plugins. The extra Qt_5.x versions will be used in the next commit. Change-Id: I049a653beeb5454c9539ffff13e3fe6f050fdf31 Reviewed-by: Lisandro Damián Nicanor Pérez Meyer <> Reviewed-by: Oswald Buddenhagen <> Reviewed-by: Thiago Macieira <>
Diffstat (limited to 'mkspecs/unsupported')
1 files changed, 1 insertions, 0 deletions
diff --git a/mkspecs/unsupported/linux-host-g++/qmake.conf b/mkspecs/unsupported/linux-host-g++/qmake.conf
index 1523126eaa..546ff21349 100644
--- a/mkspecs/unsupported/linux-host-g++/qmake.conf
+++ b/mkspecs/unsupported/linux-host-g++/qmake.conf
@@ -71,6 +71,7 @@ QMAKE_PCH_OUTPUT_EXT = .gch
# -Bsymbolic-functions (ld) support
QMAKE_LFLAGS_BSYMBOLIC_FUNC = -Wl,-Bsymbolic-functions
QMAKE_LFLAGS_DYNAMIC_LIST = -Wl,--dynamic-list,
+QMAKE_LFLAGS_VERSION_SCRIPT = -Wl,--version-script,
# qmake configuration for common linux