@c This chapter is not currently in the Development Environment Guide.
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@c This chapter is not currently in the Development Environment Guide.
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@c
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@c
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@c COPYRIGHT (c) 1988-2002.
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@c COPYRIGHT (c) 1988-2002.
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@c On-Line Applications Research Corporation (OAR).
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@c On-Line Applications Research Corporation (OAR).
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@c All rights reserved.
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@c All rights reserved.
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@c
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@c
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@c compile.texi,v 1.5 2002/01/17 21:47:44 joel Exp
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@c compile.texi,v 1.5 2002/01/17 21:47:44 joel Exp
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@c
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@c
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@ifinfo
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@ifinfo
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@node Compilation and GNU Make Stanzas, Compilation and GNU Make Stanzas Building the Entire Tree, Test Suite Source Directory, Top
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@node Compilation and GNU Make Stanzas, Compilation and GNU Make Stanzas Building the Entire Tree, Test Suite Source Directory, Top
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@end ifinfo
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@end ifinfo
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@chapter Compilation and GNU Make Stanzas
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@chapter Compilation and GNU Make Stanzas
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@ifinfo
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@ifinfo
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@menu
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@menu
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* Compilation and GNU Make Stanzas Building the Entire Tree::
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* Compilation and GNU Make Stanzas Building the Entire Tree::
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* Compilation and GNU Make Stanzas Making a Component::
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* Compilation and GNU Make Stanzas Making a Component::
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* Compilation and GNU Make Stanzas Optional Manager Support::
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* Compilation and GNU Make Stanzas Optional Manager Support::
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@end menu
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@end menu
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@end ifinfo
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@end ifinfo
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RTEMS is compiled using the GNU gmake(1G) utilities.
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RTEMS is compiled using the GNU gmake(1G) utilities.
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All examples in this section are with the gmake(1G) command.
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All examples in this section are with the gmake(1G) command.
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Note that the installation procedure for GNU Make installs it as
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Note that the installation procedure for GNU Make installs it as
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make. It is referred to as gmake in this document to
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make. It is referred to as gmake in this document to
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distinguish it from any other make utilities which may also be
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distinguish it from any other make utilities which may also be
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on the development system.
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on the development system.
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The GNU Make utility uses a file that describes the
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The GNU Make utility uses a file that describes the
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relationships among the files and the operations necessary for
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relationships among the files and the operations necessary for
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updating each file. The GNU Make utility uses stanzas to specify
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updating each file. The GNU Make utility uses stanzas to specify
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which set of relationships to update. Each component and suite
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which set of relationships to update. Each component and suite
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control directory contains a make control file, Makefile, which
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control directory contains a make control file, Makefile, which
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describes the relationships which must be checked and the
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describes the relationships which must be checked and the
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associated update operations for each stanza. This facility is
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associated update operations for each stanza. This facility is
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used to perform compilation, to remove intermediate files, to
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used to perform compilation, to remove intermediate files, to
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install RTEMS, and to maintain release and working set source
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install RTEMS, and to maintain release and working set source
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and documentation notebooks. The following is a list of stanzas
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and documentation notebooks. The following is a list of stanzas
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used by RTEMS make control files:
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used by RTEMS make control files:
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@ifset use-texinfo-tables
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@ifset use-texinfo-tables
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@table @code
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@table @code
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@item all
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@item all
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perform compilation but do not install
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perform compilation but do not install
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@item install
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@item install
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perform compilation if directory contains source but do not install
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perform compilation if directory contains source but do not install
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@item clean
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@item clean
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delete most generated files and directories for the current CPU and target
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delete most generated files and directories for the current CPU and target
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@item clobber
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@item clobber
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delete all generated files and directories for the current CPU and target
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delete all generated files and directories for the current CPU and target
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@end table
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@end table
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@end ifset
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@end ifset
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@ifclear use-texinfo-tables
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@ifclear use-texinfo-tables
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@html
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@html
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<CENTER>
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<CENTER>
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<TABLE COLS=2 WIDTH="80%" BORDER=2>
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<TABLE COLS=2 WIDTH="80%" BORDER=2>
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<TR><TD ALIGN=center>all</TD>
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<TR><TD ALIGN=center>all</TD>
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<TD ALIGN=center>perform compilation but do not install</TD></TR>
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<TD ALIGN=center>perform compilation but do not install</TD></TR>
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<TR><TD ALIGN=center>install</TD>
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<TR><TD ALIGN=center>install</TD>
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<TD ALIGN=center>perform compilation if directory contains source
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<TD ALIGN=center>perform compilation if directory contains source
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but do not install</TD></TR>
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but do not install</TD></TR>
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<TR><TD ALIGN=center>clean</TD>
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<TR><TD ALIGN=center>clean</TD>
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<TD ALIGN=center>delete most generated files and directories for
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<TD ALIGN=center>delete most generated files and directories for
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the current CPU and target</TD></TR>
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the current CPU and target</TD></TR>
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<TR><TD ALIGN=center>clobber</TD>
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<TR><TD ALIGN=center>clobber</TD>
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<TD ALIGN=center>delete all generated files and directories for
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<TD ALIGN=center>delete all generated files and directories for
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the current CPU and target</TD></TR>
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the current CPU and target</TD></TR>
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</TABLE>
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</TABLE>
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</CENTER>
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</CENTER>
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@end html
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@end html
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@end ifclear
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@end ifclear
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@ifinfo
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@ifinfo
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@node Compilation and GNU Make Stanzas Building the Entire Tree, Compilation and GNU Make Stanzas Making a Component, Compilation and GNU Make Stanzas, Compilation and GNU Make Stanzas
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@node Compilation and GNU Make Stanzas Building the Entire Tree, Compilation and GNU Make Stanzas Making a Component, Compilation and GNU Make Stanzas, Compilation and GNU Make Stanzas
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@end ifinfo
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@end ifinfo
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@section Building the Entire Tree
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@section Building the Entire Tree
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At the top of the C source tree, execute the command
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At the top of the C source tree, execute the command
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gmake all. This will build and install all components and tests
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gmake all. This will build and install all components and tests
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into the directory <TARGET> in this directory.
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into the directory <TARGET> in this directory.
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@ifinfo
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@ifinfo
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@node Compilation and GNU Make Stanzas Making a Component, Compilation and GNU Make Stanzas Optional Manager Support, Compilation and GNU Make Stanzas Building the Entire Tree, Compilation and GNU Make Stanzas
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@node Compilation and GNU Make Stanzas Making a Component, Compilation and GNU Make Stanzas Optional Manager Support, Compilation and GNU Make Stanzas Building the Entire Tree, Compilation and GNU Make Stanzas
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@end ifinfo
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@end ifinfo
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@section Making a Component
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@section Making a Component
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A single component can be compiled by changing to the
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A single component can be compiled by changing to the
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directory which contains that component and performing the
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directory which contains that component and performing the
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following command:
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following command:
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@example
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@example
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gmake
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gmake
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@end example
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@end example
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This is equivalent to the following command:
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This is equivalent to the following command:
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@example
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@example
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gmake all
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gmake all
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@end example
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@end example
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Both commands will result in the GNU Make utility
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Both commands will result in the GNU Make utility
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determining which files require compilation or assembly. If any
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determining which files require compilation or assembly. If any
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files require compilation or assembly, then these operations
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files require compilation or assembly, then these operations
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will be performed followed by the appropriate archive or link
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will be performed followed by the appropriate archive or link
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command. Files installed are placed in subdirectories under the
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command. Files installed are placed in subdirectories under the
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install point. The install point is determined by the setting
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install point. The install point is determined by the setting
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of the variable PROJECT_HOME in the file
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of the variable PROJECT_HOME in the file
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c/make/custom/<TARGET>.cfg.
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c/make/custom/<TARGET>.cfg.
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If the current directory is not a leaf directory,
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If the current directory is not a leaf directory,
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then the requested operation will be performed recursively to
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then the requested operation will be performed recursively to
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all subdirectories under the current directory.
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all subdirectories under the current directory.
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By specifying one of the other stanzas supported by
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By specifying one of the other stanzas supported by
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the Makefile, the GNU Make utility can be used to perform such
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the Makefile, the GNU Make utility can be used to perform such
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operations as removing all automatically generated files in a
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operations as removing all automatically generated files in a
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component (clean and clobbers stanza).
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component (clean and clobbers stanza).
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NOTE: For many components it is not possible to
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NOTE: For many components it is not possible to
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compile them until other components have been installed.
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compile them until other components have been installed.
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@ifinfo
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@ifinfo
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@node Compilation and GNU Make Stanzas Optional Manager Support, Sample Applications, Compilation and GNU Make Stanzas Making a Component, Compilation and GNU Make Stanzas
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@node Compilation and GNU Make Stanzas Optional Manager Support, Sample Applications, Compilation and GNU Make Stanzas Making a Component, Compilation and GNU Make Stanzas
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@end ifinfo
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@end ifinfo
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@section Optional Manager Support
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@section Optional Manager Support
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RTEMS allows the C applications developer to build
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RTEMS allows the C applications developer to build
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images that only contain those components of the executive that
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images that only contain those components of the executive that
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are needed, leaving out those that will not be utilized. This
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are needed, leaving out those that will not be utilized. This
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is accomplished by the RTEMS Makefile system linking in the
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is accomplished by the RTEMS Makefile system linking in the
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"stub" versions of the optional managers in the place of those
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"stub" versions of the optional managers in the place of those
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managers not needed by the specific application. The
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managers not needed by the specific application. The
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application Makefile sets the system variable $(MANAGERS) list
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application Makefile sets the system variable $(MANAGERS) list
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to contain those managers that are required by the application.
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to contain those managers that are required by the application.
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The RTEMS Makefile system then is able to build a list of
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The RTEMS Makefile system then is able to build a list of
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managers that are unwanted, effectively linking in the stubbed
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managers that are unwanted, effectively linking in the stubbed
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versions of these managers before the RTEMS library is built.
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versions of these managers before the RTEMS library is built.
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For more information and implementation details refer
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For more information and implementation details refer
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to the following files:
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to the following files:
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@itemize @bullet
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@itemize @bullet
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@item c/make/leaf.cfg,
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@item c/make/leaf.cfg,
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@item a Makefile for a test or sample application, and
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@item a Makefile for a test or sample application, and
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@item a compiler description file from c/make/compilers
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@item a compiler description file from c/make/compilers
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@end itemize
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@end itemize
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These files demonstrate the use of $(MANAGERS) and
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These files demonstrate the use of $(MANAGERS) and
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how the unwanted managers are handled.
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how the unwanted managers are handled.
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