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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for August 14th, 2018

Delphi Build Groups: building all the Configuration/Target permutations of projects in your project group from inside the IDE

Posted by jpluimers on 2018/08/14

An automated build system for your Delphi applications is gold, and straightforward to setup using the Delphi support for msbuild.

Sometimes however, it is convenient to build any or all Configuration/Target permutations of all your projects from inside the Delphi IDE.

This has been possible since Delphi XE introduced the [Archive.is] Build Groups – RAD Studio XE. It is a really nifty feature which you can activate by clicking on the “people” icon in the project manager: .

Uwe Raabe has witten an excellent blog post on this a few years ago: [WayBack] Do you know Build Groups? | The Art of Delphi Programming

Since you can add multiple Build Groups, you can select which one contains what Configuration/Target permutations of any number of projects.

This for instance allows you to:

  • build all your server projects at once
  • only build debug versions of all projects

The Build Groups settings are saved as part of your groupproj settings and are a pretty stable feature.

Two extra tips:

–jeroen

Related:

Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »

bash: generating random passwords on Mac OS X / MacOS or what Apple calls their operating system by now

Posted by jpluimers on 2018/08/14

After some fiddling, I put this function in ~/bash_profile on my MacBook:

# https://www.cyberciti.biz/tips/linux-unix-bsd-openssh-server-best-practices.html
# pass # digits as first argument; defaults to 20
generate_password() {
  local l=$1
  [ "$l" == "" ] && l=20
  env LC_CTYPE=C LC_ALL=C tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${l} | xargs
}

The fiddling was working around this error:

tr: Illegal byte sequence

The cause is that Mac OS is not Linux, where tr happily accepts any byte sequence from /dev/urandom: it requires the C locale.

Originally, I started with the below function from [WayBackTop 20 OpenSSH Server Best Security Practices – nixCraft (thanks +Joe C Hecht) which I undid from mixed tab/spaces:

genpasswd() {
  local l=$1
  [ "$l" == "" ] && l=20
  tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${l} | xargs
}

Via: [WayBackJoe C. Hecht – Google+ who mentions:

I might add that if you do move the SSH port, try to keep it in within the first 1024 ports for a tad bit more protection on some systems.

Background reading on Apple hating binary input:

Background reading on the language setting:

–jeroen

Posted in bash, Development, Scripting, Software Development | 2 Comments »

Optimized Pascal compilation time | Fredrik Haglund’s blog

Posted by jpluimers on 2018/08/14

Long uses lists especially of units circularly referencing each other are killing for compiler performance both in CPU and memory consumption.

To solve it:

Ingredients

  • ICARUS – a free tool from the maker of Pascal Analyzer. [WayBackhttp://www.peganza.com/products.htm. Icarus parses Delphi or Borland Pascal source code and generates a Uses Report. This report will help you remove unneeded units from your uses lists. You will also know which units that can be moved from the interface uses list to the implementation uses list.
  • Uses Cleanup Tool – by Oleg Zhukov [WayBackhttp://cc.borland.com/Item.aspx?id=23199.

Step-by-step

  1. Run ICARUS on your delphi project to get a report of which units depends on each other.
  2. Input this report in the Uses Cleanup tool to automatically update all uses-clauses in your source code.
  3. Delete all DCU-files and recompile.

Source: [WayBackOptimized Pascal compilation time | Fredrik Haglund’s blog

Edit

Bit-rot galore!: Since Fredrik published his article, some links have vanished, so they are invalid in the above quote as well:

Uwe Raabe was the first to notice on [WayBack] G+ Long uses lists especially of units circularly referencing each other are killing for compiler performance both in CPU and memory consumption… – Jeroen Wiert Pluimers – Google+ that the Uses Cleanup Tool by Oleg Zhukov can now be downloaded from [WayBackFiles as [WayBackUsesCleanupceaf.zip.

Several people suggest using cnPack in the above G+ thread, but [WayBacktheir Delphi parser is far behind [WayBack] Delphi AST.

Cleaning uses lists is a tough thing, it very much depends in getting the dependencies really right, then interpreting them correctly.

–jeroen

Posted in Delphi, Development, Software Development | 7 Comments »

 
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