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From 9b541f4f6272c4ed4bb5bf6591e9a65cded6fdfa Mon Sep 17 00:00:00 2001
From: Samuli Piippo <samuli.piippo@qt.io>
Date: Tue, 23 Oct 2018 09:54:57 +0300
Subject: [PATCH] Disable ltcg for host_build
debug-prefix-map does not work correctly for static libraries
when using ltcg, and since host_build compilations link agaist
the libQt5Bootstrap.a library, it breaks source file packaging
into debug packages.
Also disable ltcg when compiling on Windows host platform,
as GCC7 does not support lto with mingw.
Disable also for static builds since those libraries can be linked
on Windows host, where the lto built binaries won't work.
Task-number: QTBUG-71230
Change-Id: I5bea76ea03bf1943b0cfaf03d46a4840bd99a28b
Upstream-Status: Inappropriate [embedded specific]
---
mkspecs/features/ltcg.prf | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mkspecs/features/ltcg.prf b/mkspecs/features/ltcg.prf
index ccf0226272..00118be872 100644
--- a/mkspecs/features/ltcg.prf
+++ b/mkspecs/features/ltcg.prf
@@ -1,4 +1,4 @@
-CONFIG(release, debug|release) {
+CONFIG(release, debug|release):!host_build:!equals(QMAKE_HOST.os, Windows):!staticlib {
# We need fat object files when creating static libraries on some platforms
# so the linker will know to load a particular object from the library
# in the first place. On others, we have special ar and nm to create the symbol
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