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Editorial Team
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Asked: 2026-06-17T14:59:21+00:00

everyone. I installed qt creator 2.4.1 under Ubuntu 12.04 LTS using its software centre.

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everyone.
I installed qt creator 2.4.1 under Ubuntu 12.04 LTS using its software centre.
The qmake shows the following weird error:

/usr/bin/qmake-qt4 -spec /usr/share/qt4/mkspecs/linux-g++ -o Makefile test3.pro
/home/paul/Documents/workplace/test3/test3.pro:1: Parse Error ('')
Error processing project file: test3.pro

A parse error of no error ……
But the error is not presented when a new project is just created without editing the the pro file at all.

Pro file editing includes any thing such as typing a space in the comment or changing a character to itself.

The error has no relationship with the content of the code or the pro file.

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1 Answer

  1. Editorial Team

    Since the warning refers to a nonexistent or invisible character on line 1, this might be a Unicode BOM, and qmake might not be able to read it for whatever reason.

    Try dumping test3.pro using hexdump -C test3.pro — is the first character an ASCII printable character (between hex 0x20 and 0x7e), or is it outside of that range (such as 0xef,0xbb,0xbf)? If it’s outside that range, try opening test3.pro in a Unicode-compliant text editor, and saving it without a BOM.

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