Это не опции проекта.

В Тулз -> Инвайроментопшынззззз -> вкладка библиотек, добавляем путь...

EhLib 5.0 Readme.Txt
...
Installation Library
...
2. C++Builder 5.x - 6.x:
------------------------

Uninstall previous or evaluation version of EhLib from C++Builder IDE.
Remove or copy to other directory files of old version to prevent
crossing old and new version of EhLib (Including EhLib.bpl, EhLib.bpi or
EhLibB[XX].bpl, EhLibB[XX].bpi, EhLibDataDriversB[XX],
DclEhLibDataDriversB[XX] files).


Create directory from which you will install EhLib library
('EhLib directory') (for example, C:\CBuilder[X]\EhLib).

Copy files from Common and BCB[X] directories of the EhLib archive
to 'EhLib directory'.

By default Builder (5 and 6) place compiled EhLibB[XX].BPL file to the
<Builder path>\Projects\Bpl directory and this directory already present
in the search PATH. But if you overwrite default BPL directory then you need
put compiled EhLibB[X].BPL file into directory that is accessible
through the search PATH (i.e. DOS "PATH" environment variable; for example,
in the Windows\System directory).

Add, (if needed) 'EhLib directory' in Tools->Environment Options->Library->
Library Path.

Use "File\Open..." menu item of C++Builder IDE to open the runtime package -
EhLibB[XX].Dpk.
In "Package..." window click "Compile" button to compile the package.

After that, open and compile EhLibDataDriversB[XX].Dpk.

After compiling run-time packages you must install design-time
packages DclEhLibB[XX].BPL and DclEhLibDataDriversB[XX].BPL into the IDE.

Use "File\Open..." menu item to open design-time package DclEhLibB[XX].BPL.
In "Package..." window click "Compile" button to compile the package
and then click "Install" button to register EhLib components on
the component palette.

After that, open and install DclEhLibDataDriversB[XX].Dpk package.

EhLib components have to appear on 'EhLib' page of components palette.
...

Installation Help
-----------------

...
3. C++Builder 4.x - 6.x:

Copy the EhLib.hlp and EhLib.cnt files to the C++Builder HELP subdirectory.
Select Help|Customize to start the OpenHelp application. Add the EhLib.cnt
file to the Contents page, add the EhLib.hlp file to the Index and Link pages.

FullKettleNextMan

After that, open and install DclEhLibDataDriversB[XX].Dpk package.

EhLib components have to appear on 'EhLib' page of components palette.

У меня более ранняя версия, такого нет. На делфях все работает отлично.
И ридми тоже нет?

Ладно, вот более старая:
EhLib 4.5 Readme.Txt
...
2. C++Builder 5.x - 6.x:
------------------------

Uninstall previous or evaluation version of EhLib from C++Builder IDE.
Remove or copy to other directory files of old version to prevent
crossing old and new version of EhLib (Including EhLib.bpl, EhLib.bpi or
EhLibB[XX].bpl, EhLibB[XX].bpi, EhLibDataDriversB[XX],
DclEhLibDataDriversB[XX] files).


Create directory from which you will install EhLib library
('EhLib directory') (for example, C:\CBuilder[X]\EhLib).

Copy files from Common and BCB[X] directories of the EhLib archive
to 'EhLib directory'.

By default Builder (5 and 6) place compiled EhLibB[XX].BPL file to the
<Builder path>\Projects\Bpl directory and this directory already present
in the search PATH. But if you overwrite default BPL directory then you need
put compiled EhLibB[X].BPL file into directory that is accessible
through the search PATH (i.e. DOS "PATH" environment variable; for example,
in the Windows\System directory).

Add, (if needed) 'EhLib directory' in Tools->Environment Options->Library->
Library Path.

Use "File\Open..." menu item of C++Builder IDE to open the runtime package -
EhLibB[XX].Dpk.
In "Package..." window click "Compile" button to compile the package.

After that, open and compile EhLibDataDriversB[XX].Dpk.

After compiling run-time packages you must install design-time
packages DclEhLibB[XX].BPL and DclEhLibDataDriversB[XX].BPL into the IDE.

Use "File\Open..." menu item to open design-time package DclEhLibB[XX].BPL.
In "Package..." window click "Compile" button to compile the package
and then click "Install" button to register EhLib components on
the component palette.

After that, open and install DclEhLibDataDriversB[XX].Dpk package.

EhLib components have to appear on 'EhLib' page of components palette.
...
Installation Help
-----------------

...
3. C++Builder 4.x - 6.x:

Copy the EhLib.hlp and EhLib.cnt files to the C++Builder HELP subdirectory.
Select Help|Customize to start the OpenHelp application. Add the EhLib.cnt
file to the Contents page, add the EhLib.hlp file to the Index and Link pages.
...



Кстати, у вас не эвалуэйшн?
Other information
Other information
-----------------

(1)
Information for user who is going to install evaluation version of EhLib
or Ehlib - without source:

To avoid problem with installation check that your Delphi or
C++ Builder Build number is equal of Delphi or C++ Builder Build number
under which EhLib was compiled. Otherwise you can get next error "Unit <one
of EhLib unit name> was compiled with different version of <one of VCL unit
name>".

See Build number of Delphi and C++ Builder under which EhLib was compiled
below:

C++ Builder 4 (Build 14.11) Update Pack 1 + "C++BUILDER 4 UPDATE PACK 2"
C++ Builder 5 (Build 12.34) Update Pack 1





Или еще более старая? Насколько более старая - секрет?