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>The <SPAN
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> Component Writer's Guide</TH
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><A
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><A
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NAME="REF.HARDWARE"><SPAN
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NAME="REF.HARDWARE"><SPAN
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CLASS="PROPERTY"
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CLASS="PROPERTY"
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>hardware</SPAN
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>hardware</SPAN
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></H1
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></H1
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><DIV
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><DIV
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CLASS="REFNAMEDIV"
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CLASS="REFNAMEDIV"
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><A
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><A
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NAME="AEN4413"
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NAME="AEN4413"
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></A
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></A
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><H2
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><H2
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>Name</H2
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>Name</H2
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>Property <SPAN
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>Property <SPAN
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CLASS="PROPERTY"
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CLASS="PROPERTY"
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>hardware</SPAN
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>hardware</SPAN
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> -- Specify that a package is tied to specific hardware.</DIV
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> -- Specify that a package is tied to specific hardware.</DIV
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><DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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CLASS="REFSYNOPSISDIV"
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><A
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><A
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NAME="AEN4417"><H2
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NAME="AEN4417"><H2
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>Synopsis</H2
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>Synopsis</H2
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><PRE
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CLASS="SYNOPSIS"
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CLASS="SYNOPSIS"
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>cdl_option <name> {
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>cdl_option <name> {
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active_if <condition>
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active_if <condition>
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…
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…
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}</PRE
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}</PRE
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CLASS="REFSECT1"
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CLASS="REFSECT1"
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><A
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><A
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NAME="AEN4419"
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NAME="AEN4419"
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></A
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></A
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><H2
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><H2
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>Description</H2
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>Description</H2
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><P
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><P
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>Some packages such as device drivers and HAL packages are
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>Some packages such as device drivers and HAL packages are
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hardware-specific, and generally it makes no sense to add such
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hardware-specific, and generally it makes no sense to add such
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packages to a configuration unless the corresponding hardware is
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packages to a configuration unless the corresponding hardware is
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present on your target system. Typically hardware package selection
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present on your target system. Typically hardware package selection
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happens automatically when you select your target. The <SPAN
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happens automatically when you select your target. The <SPAN
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CLASS="PROPERTY"
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CLASS="PROPERTY"
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>hardware</SPAN
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>hardware</SPAN
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>
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>
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property can be used in the body of a <TT
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property can be used in the body of a <TT
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CLASS="LITERAL"
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CLASS="LITERAL"
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>cdl_package</TT
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>cdl_package</TT
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> command to
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> command to
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indicate that the package is hardware-specific.</P
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indicate that the package is hardware-specific.</P
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><DIV
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><DIV
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CLASS="NOTE"
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CLASS="NOTE"
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><BLOCKQUOTE
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><BLOCKQUOTE
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CLASS="NOTE"
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CLASS="NOTE"
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><P
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><P
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><B
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><B
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>Note: </B
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>Note: </B
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>At the time of writing the <SPAN
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>At the time of writing the <SPAN
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CLASS="PROPERTY"
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CLASS="PROPERTY"
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>hardware</SPAN
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>hardware</SPAN
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> property is largely ignored by
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> property is largely ignored by
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the configuration tools, but this may change in future. Amongst other
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the configuration tools, but this may change in future. Amongst other
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possible changes, for hardware-specific packages such as device
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possible changes, for hardware-specific packages such as device
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drivers and HAL packages, the current scheme of generating a
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drivers and HAL packages, the current scheme of generating a
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configuration header file name based purely on the package name may be
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configuration header file name based purely on the package name may be
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abandoned. Instead all hardware packages would send their
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abandoned. Instead all hardware packages would send their
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configuration data to a single header file, <TT
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configuration data to a single header file, <TT
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CLASS="FILENAME"
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CLASS="FILENAME"
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>pkgconf/hardware.h</TT
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>pkgconf/hardware.h</TT
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>. This would make it
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>. This would make it
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easier for code to obtain details of the current hardware, but
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easier for code to obtain details of the current hardware, but
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obviously there are compatibility issues. For now it is recommended
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obviously there are compatibility issues. For now it is recommended
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that all hardware packages specify their configuration header file
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that all hardware packages specify their configuration header file
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explicitly.</P
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explicitly.</P
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></BLOCKQUOTE
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></BLOCKQUOTE
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></DIV
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><DIV
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><DIV
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CLASS="REFSECT1"
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CLASS="REFSECT1"
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><A
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><A
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NAME="AEN4428"
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NAME="AEN4428"
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></A
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></A
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><H2
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><H2
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>Example</H2
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>Example</H2
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><PRE
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><PRE
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CLASS="PROGRAMLISTING"
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CLASS="PROGRAMLISTING"
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>cdl_package CYGPKG_HAL_ARM {
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>cdl_package CYGPKG_HAL_ARM {
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display "ARM architecture"
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display "ARM architecture"
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parent CYGPKG_HAL
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parent CYGPKG_HAL
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hardware
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hardware
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include_dir cyg/hal
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include_dir cyg/hal
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define_header hal_arm.h
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define_header hal_arm.h
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…
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…
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}</PRE
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}</PRE
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></TD
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CLASS="REFSECT1"
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CLASS="REFSECT1"
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><A
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><A
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NAME="AEN4431"
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NAME="AEN4431"
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></A
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></A
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><H2
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><H2
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>See Also</H2
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>See Also</H2
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><P
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><P
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>Property <A
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>Property <A
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HREF="ref.define-header.html"
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HREF="ref.define-header.html"
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><SPAN
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><SPAN
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CLASS="PROPERTY"
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CLASS="PROPERTY"
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>define_header</SPAN
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>define_header</SPAN
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></A
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></A
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>, and
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>, and
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command <A
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command <A
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HREF="ref.cdl-package.html"
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HREF="ref.cdl-package.html"
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><TT
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><TT
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CLASS="LITERAL"
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CLASS="LITERAL"
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>cdl_package</TT
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>cdl_package</TT
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></A
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></A
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>.</P
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>.</P
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