In bitcoin-qt.pro replace:

# regenerate src/build.h
!win32|contains(USE_BUILD_INFO, 1) {
    genbuild.depends = FORCE
    genbuild.commands = cd $$PWD; /bin/sh share/genbuild.sh $$OUT_PWD/build/build.h
    genbuild.target = $$OUT_PWD/build/build.h
    PRE_TARGETDEPS += $$OUT_PWD/build/build.h
    QMAKE_EXTRA_TARGETS += genbuild
    DEFINES += HAVE_BUILD_INFO
}

With:

# regenerate src/build.h
!windows|contains(USE_BUILD_INFO, 1) {
    genbuild.depends = FORCE
    genbuild.commands = cd $$PWD; /bin/sh share/genbuild.sh $$OUT_PWD/build/build.h
    genbuild.target = $$OUT_PWD/build/build.h
    PRE_TARGETDEPS += $$OUT_PWD/build/build.h
    QMAKE_EXTRA_TARGETS += genbuild
    DEFINES += HAVE_BUILD_INFO
}