error "missing separator" in build qwt-6.1

Question

My environment:

QT: Qt_5_0_2
QWT: qwt-6.1-rc3
MinGW: mingw47_32
OS: win7_32

I follow the introduction file "INSTALL"'s step:

C) Win32/MinGW 
Check that your Qt version has been built with MinGW - not with MSVC !

Start a Shell, where Qt4 is initialized. ( F.e. with
"Programs->Qt by Trolltech ...->Qt 4.x.x Command Prompt" ).
Check if you can execute "make" or something like "mingw32-make".

qmake qwt.pro
make
make install

I get the error in the step "make":

C:\qwt-6.1-rc3>qmake qwt.pro

C:\qwt-6.1-rc3>mingw32-make
cd src\ && ( if not exist Makefile E:\Qt\5.0.2\5.0.2\mingw47_32\bin\qmake.exe C:
\qwt-6.1-rc3\src\src.pro -o Makefile ) && mingw32-make -f Makefile
mingw32-make[1]: Entering directory 'C:/qwt-6.1-rc3/src'
mingw32-make -f Makefile.Release all
mingw32-make[2]: Entering directory 'C:/qwt-6.1-rc3/src'
Makefile.Release:305: *** missing separator.  Stop.
mingw32-make[2]: Leaving directory 'C:/qwt-6.1-rc3/src'
Makefile:40: recipe for target 'release-all' failed
mingw32-make[1]: *** [release-all] Error 2
mingw32-make[1]: Leaving directory 'C:/qwt-6.1-rc3/src'
makefile:44: recipe for target 'sub-src-make_first-ordered' failed
mingw32-make: *** [sub-src-make_first-ordered] Error 2

The lines 304,305 in "Makefile.Release" are:

304 qmake:  FORCE
305     @$(QMAKE) -o Makefile.Release src.pro

Where is wrong?

thanks

Answer 1

Guess your broken Makefile is leftover from some earlier attempts - remove the Qwt build directory completely and start from scratch.

For loading the Qwt designer plugin in the Qt creator you need to have a version that is compatible with how the creator had been built. AFAIR the 5.0.2 mingw package contains a version 2.7.0 of the creator, that had been built for Qt 4.8 with MSVC ( see About->Qt creator ). If true it means you need to have 2 different builds of Qwt - one for your application, the other one for the designer plugin.

For the future I'm planning to offer precompiled versions of the designer plugin that are compatible with current binary packages of the Qt creator.

Also note that in SVN trunk the default settings for building the plugin have been changed since rc3: on windows the library is statically linked into the plugin and on better systems you have a similar effect with compiling in the install path of the library ( see RPATH ).

Answer 2

Makefile.Release:305: *** missing separator.  Stop.

This usually means this Makefile is not of the right format for mingw32-make;

Since the Makefile is generated by qmake, you should check the QMAKESPEC of your qmake. It should be win32-g++, not win32-mvsc.

This issue is strongly linked to the first warning of the qwt INSTALL note :

Check that your Qt version has been built with MinGW - not with MSVC !

Answer 3

I had the same problem. The reason was that I wanted to prepare sources second time. I had sources in svn floder. I solved proble erasing folder and update sources again. After this operation I was able to run 'qmake proj.pro' correctly.