Fortran and Qt

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Hello I am new in working with Qt.
I work with the Creator on Windows.

I would like to integrate Fortran into Qt.
Fortran is involved in the project file.
@TEMPLATE = app
TARGET =
DEPENDPATH += .
INCLUDEPATH += .
LIBS +=c:/Programme/MinGW/bin/libgfortran-3.dll

HEADERS += mywidget.h
konvert.h \

SOURCES += main.cpp mywidget.cpp
konvertF.f90@

The compiler gives me the following error message.
_ 09:14:17: Führe Build-Schritte für Projekt Fortran_C_Qt aus...
09:14:17: Unveränderte Konfiguration, qmake-Schritt wird übersprungen.
09:14:17: Starte "C:\Programme\QtSDK\mingw\bin\mingw32-make.exe"
C:/Programme/QtSDK/mingw/bin/mingw32-make.exe -f Makefile.Debug
mingw32-make.exe[1]: Entering directory D:/Qt/Beispiele/Fortran_C_Qt' gcc -c -g -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"c:\Programme\QtSDK\Desktop\Qt\4.8.1\mingw\include\QtCore" -I"c:\Programme\QtSDK\Desktop\Qt\4.8.1\mingw\include\QtGui" -I"c:\Programme\QtSDK\Desktop\Qt\4.8.1\mingw\include" -I"." -I"c:\Programme\QtSDK\Desktop\Qt\4.8.1\mingw\include\ActiveQt" -I"debug" -I"c:\Programme\QtSDK\Desktop\Qt\4.8.1\mingw\mkspecs\win32-g++" -o debug\konvertF.o konvertF.f90 mingw32-make.exe[1]: Leaving directory D:/Qt/Beispiele/Fortran_C_Qt'
gcc: CreateProcess: No such file or directory
mingw32-make.exe[1]: *** [debug/konvertF.o] Error 1
mingw32-make.exe: *** [debug] Error 2
09:14:17: Der Prozess "C:\Programme\QtSDK\mingw\bin\mingw32-make.exe" wurde mit dem Rückgabewert 2 beendet.
Fehler beim Erstellen des Projekts Fortran_C_Qt(Ziel: Desktop)
Bei der Ausführung von Build-Schritt 'Make'_

But if I call individually gcc (gcc-c konvertF.f90) it works and I get an Objectfile. Then also the Linkingis o.K. and I get an .exe.

Must I change any FLAGS in qmake?
@# qmake configuration for win32-g++

Written for MinGW

MAKEFILE_GENERATOR = MINGW
TEMPLATE = app
CONFIG += qt warn_on release link_prl copy_dir_files debug_and_release debug_and_release_target precompile_header
QT += core gui
DEFINES += UNICODE QT_LARGEFILE_SUPPORT
QMAKE_COMPILER_DEFINES += GNUC WIN32

QMAKE_EXT_OBJ = .o
QMAKE_EXT_RES = _res.o

QMAKE_CC = gcc
QMAKE_LEX = flex
QMAKE_LEXFLAGS =
QMAKE_YACC = byacc
QMAKE_YACCFLAGS = -d
QMAKE_CFLAGS =
QMAKE_CFLAGS_DEPS = -M
QMAKE_CFLAGS_WARN_ON = -Wall
QMAKE_CFLAGS_WARN_OFF = -w
QMAKE_CFLAGS_RELEASE = -O2
QMAKE_CFLAGS_DEBUG = -g
QMAKE_CFLAGS_YACC = -Wno-unused -Wno-parentheses

QMAKE_CXX = gcc
QMAKE_CXXFLAGS = $$QMAKE_CFLAGS
QMAKE_CXXFLAGS_DEPS = $$QMAKE_CFLAGS_DEPS
QMAKE_CXXFLAGS_WARN_ON = $$QMAKE_CFLAGS_WARN_ON
QMAKE_CXXFLAGS_WARN_OFF = $$QMAKE_CFLAGS_WARN_OFF
QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CFLAGS_RELEASE
QMAKE_CXXFLAGS_DEBUG = $$QMAKE_CFLAGS_DEBUG
QMAKE_CXXFLAGS_YACC = $$QMAKE_CFLAGS_YACC
QMAKE_CXXFLAGS_THREAD = $$QMAKE_CFLAGS_THREAD
QMAKE_CXXFLAGS_RTTI_ON = -frtti
QMAKE_CXXFLAGS_RTTI_OFF = -fno-rtti
QMAKE_CXXFLAGS_EXCEPTIONS_ON = -fexceptions -mthreads
QMAKE_CXXFLAGS_EXCEPTIONS_OFF = -fno-exceptions

QMAKE_INCDIR =
QMAKE_INCDIR_QT = $$[QT_INSTALL_HEADERS]
QMAKE_LIBDIR_QT = $$[QT_INSTALL_LIBS]

QMAKE_RUN_CC = $(CC) -c $(CFLAGS) $(INCPATH) -o $obj $src
QMAKE_RUN_CC_IMP = $(CC) -c $(CFLAGS) $(INCPATH) -o $ $<
QMAKE_RUN_CXX = $(CXX) -c $(CXXFLAGS) $(INCPATH) -o $obj $src
QMAKE_RUN_CXX_IMP = $(CXX) -c $(CXXFLAGS) $(INCPATH) -o $ $<

QMAKE_LINK = gcc
QMAKE_LINK_C = gcc
QMAKE_LFLAGS =
QMAKE_LFLAGS_EXCEPTIONS_ON = -mthreads
QMAKE_LFLAGS_EXCEPTIONS_OFF =
QMAKE_LFLAGS_RELEASE = -Wl,-s
QMAKE_LFLAGS_DEBUG =
QMAKE_LFLAGS_CONSOLE = -Wl,-subsystem,console
QMAKE_LFLAGS_WINDOWS = -Wl,-subsystem,windows
QMAKE_LFLAGS_DLL = -shared
QMAKE_LINK_OBJECT_MAX = 10
QMAKE_LINK_OBJECT_SCRIPT= object_script
QMAKE_PREFIX_STATICLIB = lib
QMAKE_EXTENSION_STATICLIB = a

QMAKE_LIBS =
QMAKE_LIBS_CORE = -lole32 -luuid -lws2_32 -ladvapi32 -lshell32 -luser32 -lkernel32
QMAKE_LIBS_GUI = -lgdi32 -lcomdlg32 -loleaut32 -limm32 -lwinmm -lwinspool -lws2_32 -lole32 -luuid -luser32 -ladvapi32
QMAKE_LIBS_NETWORK = -lws2_32
QMAKE_LIBS_OPENGL = -lglu32 -lopengl32 -lgdi32 -luser32
QMAKE_LIBS_COMPAT = -ladvapi32 -lshell32 -lcomdlg32 -luser32 -lgdi32 -lws2_32
QMAKE_LIBS_QT_ENTRY = -lmingw32 -lqtmain

!isEmpty(QMAKE_SH) {
MINGW_IN_SHELL = 1
QMAKE_DIR_SEP = /
QMAKE_QMAKE ~= s,\\,/,
QMAKE_COPY = cp
QMAKE_STREAM_EDITOR = sed
QMAKE_COPY_DIR = cp -r
QMAKE_MOVE = mv
QMAKE_DEL_FILE = rm
QMAKE_MKDIR = mkdir -p
QMAKE_DEL_DIR = rmdir
QMAKE_CHK_DIR_EXISTS = test -d
} else {
QMAKE_COPY = copy /y
QMAKE_COPY_DIR = xcopy /s /q /y /i
QMAKE_MOVE = move
QMAKE_DEL_FILE = del
QMAKE_MKDIR = mkdir
QMAKE_DEL_DIR = rmdir
QMAKE_CHK_DIR_EXISTS = if not exist
}

QMAKE_MOC = $$[QT_INSTALL_BINS]$${DIR_SEPARATOR}moc.exe
QMAKE_UIC = $$[QT_INSTALL_BINS]$${DIR_SEPARATOR}uic.exe
QMAKE_IDC = $$[QT_INSTALL_BINS]$${DIR_SEPARATOR}idc.exe

QMAKE_IDL = midl
QMAKE_LIB = ar -ru
QMAKE_RC = windres
QMAKE_ZIP = zip -r -9

QMAKE_STRIP = strip
QMAKE_STRIPFLAGS_LIB += --strip-unneeded
load(qt_config)@

Would be nice if someone could help me.