loader.cdl

eCos操作系统源码

# ====================================================================
#
#      loader.cdl
#
#      Dynamic loader configuration data
#
# ====================================================================
#####ECOSGPLCOPYRIGHTBEGIN####
## -------------------------------------------
## This file is part of eCos, the Embedded Configurable Operating System.
## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
##
## eCos is free software; you can redistribute it and/or modify it under
## the terms of the GNU General Public License as published by the Free
## Software Foundation; either version 2 or (at your option) any later version.
##
## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
## WARRANTY; without even the implied warranty of MERCHANTABILITY or
## FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
## for more details.
##
## You should have received a copy of the GNU General Public License along
## with eCos; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
##
## As a special exception, if other files instantiate templates or use macros
## or inline functions from this file, or you compile this file and link it
## with other works to produce a work based on this file, this file does not
## by itself cause the resulting work to be covered by the GNU General Public
## License. However the source code for this file must still be made available
## in accordance with section (3) of the GNU General Public License.
##
## This exception does not invalidate any other reasons why a work based on
## this file might be covered by the GNU General Public License.
##
## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
## at http://sources.redhat.com/ecos/ecos-license/
## -------------------------------------------
#####ECOSGPLCOPYRIGHTEND####
# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      nickg
# Contributors:
# Date:           2000-11-20
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_LOADER {
    display       "Dynamic loader"
    description   "
                  This package provides support for dynamic code loading."
    include_dir   cyg/loader
    compile       loader.cxx dload.cxx

    requires      { CYGBLD_ISO_DLFCN_HEADER == "<cyg/loader/dlfcn.h>" }
    implements    CYGINT_ISO_DLFCN
    
# ====================================================================

    cdl_component CYGPKG_LOADER_OPTIONS {
        display "Common memory allocator package build options"
        flavor  none
        no_define
        description   "
	    Package specific build options including control over
	    compiler flags used only in building this package,
	    and details of which tests are built."

        cdl_option CYGPKG_LOADER_CFLAGS_ADD {
            display "Additional compiler flags"
            flavor  data
            no_define
            default_value { "" }
            description   "
                This option modifies the set of compiler flags for
                building this package. These flags are used in addition
                to the set of global flags."
        }

        cdl_option CYGPKG_LOADER_CFLAGS_REMOVE {
            display "Suppressed compiler flags"
            flavor  data
            no_define
            default_value { "-O2 -fvtable-gc" }
            description   "
                This option modifies the set of compiler flags for
                building this package. These flags are removed from
                the set of global flags if present."
        }

        cdl_option CYGPKG_LOADER_LDFLAGS_ADD {
            display "Additional compiler flags"
            flavor  data
            no_define
#            default_value { "-L$(PREFIX)/lib -ldlforce" }
            default_value { "" }
            description   "
                This option modifies the set of compiler flags for
                building this package. These flags are used in addition
                to the set of global flags."
        }

        cdl_option CYGPKG_LOADER_LDFLAGS_REMOVE {
            display "Suppressed compiler flags"
            flavor  data
            no_define
            default_value { "-Wl,-static -Wl,--gc-sections" }
            description   "
                This option modifies the set of compiler flags for
                building this package. These flags are removed from
                the set of global flags if present."
        }
	
    }

# ====================================================================
# Dynamic library build options

    cdl_option CYGBLD_LOADER_DYNAMIC_LD {
	display    "Build linker script for dynamic libraries"
	flavor     bool
	default_value 1
	description "Build a linker script for creating dynamic libraries"

	make -priority 50 {
	    <PREFIX>/lib/dynamic.ld: <PACKAGE>/src/dynamic.ld
	    $(CC) -E -P -Wp,-MD,dynamic.tmp -DEXTRAS=1 -xc $(INCLUDE_PATH) $(CFLAGS) -o $@ $<
	    @echo $@ ": \\" > $(notdir $@).deps
	    @tail -n +2 dynamic.tmp >> $(notdir $@).deps
	    @echo >> $(notdir $@).deps
	    @rm dynamic.tmp

	}
    }

    cdl_option CYGBLD_LOADER_CRTBEGINS {
	display "Build special crtbeginS.o for dynamic libraries"
	flavor   bool
	default_value 1

	make -priority 110 {
        <PREFIX>/lib/crtbeginS.o : <PACKAGE>/src/crtbeginS.c
        $(CC) -Wp,-MD,crtbeginS.tmp $(INCLUDE_PATH) -g0 -Wall -finhibit-size-directive -fno-inline-functions -fno-exceptions -c -o $@ $<	    
        @echo $@ ": \\" > $(notdir $@).deps
        @tail -n +2 crtbeginS.tmp >> $(notdir $@).deps
        @echo >> $(notdir $@).deps
        @rm crtbeginS.tmp
	}
    }

    cdl_option CYGBLD_LOADER_CRTENDS {
	display "Build special crtendS.o for dynamic libraries"
	flavor   bool
	default_value 1

	make -priority 110 {
        <PREFIX>/lib/crtendS.o : <PACKAGE>/src/crtendS.c
        $(CC) -Wp,-MD,crtendS.tmp $(INCLUDE_PATH) -g0 -Wall -finhibit-size-directive -fno-inline-functions -fno-exceptions -c -o $@ $<	    
        @echo $@ ": \\" > $(notdir $@).deps
        @tail -n +2 crtendS.tmp >> $(notdir $@).deps
        @echo >> $(notdir $@).deps
        @rm crtendS.tmp
	}
    }
    
    cdl_option CYGBLD_LOADER_DLFORCE_LIB {
	display    "Build dynamic load library"
	flavor     bool
	default_value 1
	description "Build a shared library that is to be linked with the executable
	             to force it to be built in such a way that it is suitable for
	             having some other shared library load against it. This is the
	             most portable way of achieving this."

	make -priority 160 {
	    <PREFIX>/lib/libdlforce.so : <PACKAGE>/src/dlforce.c
	            $(CC) $(CFLAGS) -Wp,-MD,dlforce.tmp $(INCLUDE_PATH) -shared -c -o src/dlforce.o $<
	            $(CC) -g -nostdlib -L$(PREFIX)/lib -shared -Tdynamic.ld -o $@ $(PREFIX)/lib/crtbeginS.o src/dlforce.o $(PREFIX)/lib/crtendS.o
	            @echo $@ ": \\" > $(notdir $@).deps
                    @tail -n +2 dlforce.tmp >> $(notdir $@).deps
                    @echo >> $(notdir $@).deps
                    @rm dlforce.tmp
	}
    }
    
# ====================================================================
# Tests


    cdl_option CYGBLD_LOADER_TEST_FOO_LIB {
	display    "Build a dynamic load library"
	flavor     bool
	default_value 1
	description "Build a shared library for testing."

	make {
	    tests/libfoo.so : <PACKAGE>/tests/foo.c
	            mkdir -p tests
	            $(CC) $(CFLAGS) -Wp,-MD,foo.tmp $(INCLUDE_PATH) -shared -c -o tests/foo.o $<
	            $(CC) $(LDFLAGS) -L$(PREFIX)/lib -shared -Tdynamic.ld -o $@ $(PREFIX)/lib/crtbeginS.o tests/foo.o $(PREFIX)/lib/crtendS.o
	            @echo $@ ": \\" > $(notdir $@).deps
	            @tail -n +2 foo.tmp >> $(notdir $@).deps
	            @echo >> $(notdir $@).deps
	            @rm foo.tmp
	            cc -o entable $(REPOSITORY)/$(PACKAGE)/tests/entable.c
	            ./entable libfoo <tests/libfoo.so >tests/libfoo.so.c
	}
    }

    cdl_option CYGBLD_LOADER_TEST_LOADFOO {
	display   "Build library load test program"
	flavor    bool
	default_value 1
	description "Build a test program that will load the test shared library"

	make {
	    <PREFIX>/tests/services/loader/current/tests/loadfoo : <PACKAGE>/tests/loadfoo.cxx
	            mkdir -p $(PREFIX)/tests/services/loader/current/tests
	            $(CC) $(CFLAGS) -Wp,-MD,loadfoo.tmp $(INCLUDE_PATH) -c -o tests/loadfoo.o $< 
#	            $(CC) $(LDFLAGS) -L$(PREFIX)/lib -Ttarget.ld -ldlforce -o $@ $(PREFIX)/lib/crtbeginS.o tests/loadfoo.o $(PREFIX)/lib/crtendS.o
	            $(CC) $(LDFLAGS) -Wl,-E -L$(PREFIX)/lib -Ttarget.ld -ldlforce -o $@ tests/loadfoo.o
	            @echo $@ ": \\" > $(notdir $@).deps
	            @tail -n +2 loadfoo.tmp >> $(notdir $@).deps
	            @echo >> $(notdir $@).deps
	            @rm loadfoo.tmp
	    
	}
    }
    
#    cdl_option CYGPKG_LOADER_TESTS {
#	display "Tests"
#	flavor  data
#	no_define
#	calculated { "tests/loadfoo" }
#	description   "
#	               This option specifies the set of tests for this package."
#    }
    
}

# ====================================================================
# EOF loader.cdl