4 files changed, 4 insertions, 17 deletions
diff --git a/src/3rdparty/harfbuzz_dependency.pri b/src/3rdparty/harfbuzz_dependency.pri
index 36abbfbe35..f39bb62381 100644
--- a/src/3rdparty/harfbuzz_dependency.pri
+++ b/src/3rdparty/harfbuzz_dependency.pri
@@ -1,5 +1,5 @@
 contains(QT_CONFIG, system-harfbuzz) {
-    LIBS_PRIVATE += -lharfbuzz
+    QMAKE_USE_PRIVATE += harfbuzz
 } else: contains(QT_CONFIG, harfbuzz) {
     INCLUDEPATH += $$PWD/harfbuzz-ng/include
     LIBS_PRIVATE += -L$$QT_BUILD_TREE/lib -lqtharfbuzzng$$qtPlatformTargetSuffix()
diff --git a/src/3rdparty/pcre_dependency.pri b/src/3rdparty/pcre_dependency.pri
index 2a3c99c7ed..fa7df4df0e 100644
--- a/src/3rdparty/pcre_dependency.pri
+++ b/src/3rdparty/pcre_dependency.pri
@@ -3,5 +3,5 @@ pcre {
     INCLUDEPATH += $$PWD/pcre
     LIBS_PRIVATE += -L$$QT_BUILD_TREE/lib -lqtpcre$$qtPlatformTargetSuffix()
 } else {
-    LIBS_PRIVATE += -lpcre16
+    QMAKE_USE_PRIVATE += pcre
 }
diff --git a/src/3rdparty/png_dependency.pri b/src/3rdparty/png_dependency.pri
index 2ec2e8929d..12dbfc5487 100644
--- a/src/3rdparty/png_dependency.pri
+++ b/src/3rdparty/png_dependency.pri
@@ -1,14 +1,5 @@
 contains(QT_CONFIG, system-png) {
-    unix|mingw {
-        !contains(QT_CONFIG, no-pkg-config) {
-            CONFIG += link_pkgconfig
-            PKGCONFIG_PRIVATE += libpng
-        } else {
-            LIBS_PRIVATE += -lpng
-        }
-    } else {
-        LIBS += libpng.lib
-    }
+    QMAKE_USE_PRIVATE += libpng
 } else: contains(QT_CONFIG, png) {
     INCLUDEPATH += $$PWD/libpng
     LIBS_PRIVATE += -L$$QT_BUILD_TREE/lib -lqtpng$$qtPlatformTargetSuffix()
diff --git a/src/3rdparty/zlib_dependency.pri b/src/3rdparty/zlib_dependency.pri
index 53e0b3ef39..11ad70621d 100644
--- a/src/3rdparty/zlib_dependency.pri
+++ b/src/3rdparty/zlib_dependency.pri
@@ -1,10 +1,6 @@
 # zlib dependency satisfied by bundled 3rd party zlib or system zlib
 contains(QT_CONFIG, system-zlib) {
-    if(unix|mingw):LIBS_PRIVATE += -lz
-    else {
-        isEmpty(ZLIB_LIBS): LIBS += zdll.lib
-        else: LIBS += $$ZLIB_LIBS
-    }
+    QMAKE_USE_PRIVATE += zlib
 } else {
     INCLUDEPATH +=  $$PWD/zlib
     !no_core_dep {