Fix BuildTool output path

[hazzik]

There seems to be a difference in -o behaviour between versions of .NET Sdk. The .NET Sdk up to 2.2 output the build artefacts relative to the project file, and starting from previews of 3.0 the build output is calculated relative to the current directory.

[hazzik]

@lillo42 please test.

[lillo42]

@hazzik it is not fixes yet, pushd not found:

https://stackoverflow.com/a/5193087

rlillo@Lenovo-ideapad-320:~/Downloads/nhibernate-core-fix-building-build-tool$ ./ShowBuildMenu.sh 
./ShowBuildMenu.sh: 17: ./ShowBuildMenu.sh: pushd: not found
Microsoft (R) Build Engine version 16.3.0-preview-19455-02+4a2d77107 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

MSBUILD : error MSB1009: Project file does not exist.
Switch: BuildTool.sln
./ShowBuildMenu.sh: 19: ./ShowBuildMenu.sh: popd: not found
========================= NHIBERNATE BUILD MENU ==========================
--- TESTING ---
A. (Step 1) Set up a new test configuration for a particular database.
B. (Step 2) Activate a test configuration.
C. (Step 3) Run tests.
.
--- BUILD ---
E. Build NHibernate (Debug)
F. Build NHibernate (Release)
.
--- Code generation ---
H. Generate async code (Generates files in Async sub-folders)
.
--- Exit ---
X. Make the beautiful build menu go away.
.
Could not execute because the specified command or file was not found.
Possible reasons for this include:
  * You misspelled a built-in dotnet command.
  * You intended to execute a .NET Core program, but dotnet-./Tools/BuildTool/bin/BuildTool.dll does not exist.
  * You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
Could not execute because the specified command or file was not found.
Possible reasons for this include:
  * You misspelled a built-in dotnet command.
  * You intended to execute a .NET Core program, but dotnet-./Tools/BuildTool/bin/BuildTool.dll does not exist.
  * You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
cat: /home/rlillo/Downloads/nhibernate-core-fix-building-build-tool/folder.tmp: No such file or directory
cp: cannot access '/lost+found': Permission denied

[hazzik]

pushd: not found

Very strange...

[hazzik]

@lillo42 I've replaced pushd/popd with cd. Could you please check now?

[lillo42]

@hazzik it's working now \o/

[fredericDelaporte]

I would just have used cd ../.. before the fi, but why not.

[hazzik]

I was thinking, but decided against it.

[fredericDelaporte]

(Verified under Windows and Linux, from the same folder and from src, with and without the build tool already built, but without dotnet 3.)