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-rw-r--r--mkspecs/features/link_ltcg.prf5
1 files changed, 4 insertions, 1 deletions
diff --git a/mkspecs/features/link_ltcg.prf b/mkspecs/features/link_ltcg.prf
index 734743ca13..4da061e1fe 100644
--- a/mkspecs/features/link_ltcg.prf
+++ b/mkspecs/features/link_ltcg.prf
@@ -1,5 +1,8 @@
gcc {
- !clang:!intel_icc:greaterThan(QMAKE_HOST.cpu_count, 1) {
+ # on Windows, MinGW's support for -flto=N is broken
+ intel_icc {
+ QMAKE_LFLAGS_LTCG ~= s/-ipo/-ipo=$$QMAKE_HOST.cpu_count/
+ } else: !clang:!equals(QMAKE_HOST.os, Windows):greaterThan(QMAKE_HOST.cpu_count, 1) {
# Override LTO number of jobs
QMAKE_LFLAGS_LTCG ~= s/^-flto$/-flto=$$QMAKE_HOST.cpu_count/
}