380198c985
Provided changes add option (CONFIG_EXECFUNCS_GENERATE_SYSTEM_SYMTAB) to build complete list of available functions and syscalls automatically. The symbolic table is generated in form libsymtab.a which can be reused by application or directly pull in when "g_symtab" and "g_nsymbols" variables are requested by EXECFUNCS configuration. I have tried to follow mechanisms for library compilation in different kernel protection modes but tested only flat no-MMU build. The basic assumption is that this library and libraries providing syscall stubs and C-library functions are available in user-space context and initial application (usually NSH) registers the symbol table through IOCTL. The table can be reused then by another applications in their address space as kernel allows. Simple for flat or protected mode, I am not sure if really support in MMU mode. It is highly probable that I have made some mistake, overlooked something, but functionality is optional (should not cause troubles in any mode if disabled) and main purpose is to lower memory overhead when more applications are loaded on memory constrained system which usually use direct kernel calling without protection or address space separation. If the table should be provided by kernel to applications then makefiles has to be adjusted.
198 lines
5.8 KiB
Makefile
198 lines
5.8 KiB
Makefile
############################################################################
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# tools/Directories.mk
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#
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# Copyright (C) 2007-2012, 2014, 2016-2019 Gregory Nutt. All rights
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# reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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# All add-on directories.
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#
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# NUTTX_ADDONS is the list of directories built into the NuttX kernel.
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# USER_ADDONS is the list of directories that will be built into the user
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# application
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NUTTX_ADDONS :=
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USER_ADDONS :=
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# In the protected build, the applications in the apps/ directory will be
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# into the userspace; in the flat build, the applications will b built into
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# the kernel space. But in the kernel build, the applications will not be
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# built at all by this Makefile.
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ifeq ($(CONFIG_BUILD_PROTECTED),y)
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USER_ADDONS += $(APPDIR)
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else
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ifneq ($(CONFIG_BUILD_KERNEL),y)
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NUTTX_ADDONS += $(APPDIR)
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endif
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endif
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# Lists of build directories.
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#
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# FSDIRS depend on file descriptor support; NONFSDIRS do not (except for parts
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# of FSDIRS). We will exclude FSDIRS from the build if file descriptor
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# support is disabled. NOTE that drivers, in general, depends on file
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# descriptor support but is always built because there are other components
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# in the drivers directory that are needed even if file descriptors are not
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# supported.
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# CONTEXTDIRS include directories that have special, one-time pre-build
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# requirements. Normally this includes things like auto-generation of
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# configuration specific files or creation of configurable symbolic links
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# USERDIRS - When NuttX is build is a monolithic kernel, this provides the
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# list of directories that must be built
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# OTHERDIRS - These are directories that are not built but probably should
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# be cleaned to prevent garbage from collecting in them when changing
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# configurations.
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ifeq ($(CONFIG_LIBCXX),y)
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LIBXX=libcxx
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else
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LIBXX=libxx
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endif
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NONFSDIRS = sched drivers boards $(ARCH_SRC) $(NUTTX_ADDONS)
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FSDIRS = fs binfmt
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CONTEXTDIRS = boards $(APPDIR)
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USERDIRS =
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OTHERDIRS = pass1
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ifeq ($(CONFIG_EXECFUNCS_GENERATE_SYSTEM_SYMTAB),y)
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USERDIRS += symtab
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else
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OTHERDIRS += symtab
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endif
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ifeq ($(CONFIG_BUILD_PROTECTED),y)
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USERDIRS += libs$(DELIM)libc mm $(USER_ADDONS)
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ifeq ($(CONFIG_HAVE_CXX),y)
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USERDIRS += libs$(DELIM)libxx
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endif
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else
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ifeq ($(CONFIG_BUILD_KERNEL),y)
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USERDIRS += libs$(DELIM)libc mm
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ifeq ($(CONFIG_HAVE_CXX),y)
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USERDIRS += libs$(DELIM)libxx
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endif
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else
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NONFSDIRS += libs$(DELIM)libc mm
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OTHERDIRS += $(USER_ADDONS)
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ifeq ($(CONFIG_HAVE_CXX),y)
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NONFSDIRS += libs$(DELIM)libxx
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else
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OTHERDIRS += libs$(DELIM)libxx
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endif
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endif
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endif
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ifeq ($(CONFIG_LIB_SYSCALL),y)
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NONFSDIRS += syscall
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CONTEXTDIRS += syscall
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USERDIRS += syscall
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else
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OTHERDIRS += syscall
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endif
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ifeq ($(CONFIG_LIB_ZONEINFO_ROMFS),y)
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CONTEXTDIRS += libs$(DELIM)libc
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endif
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ifeq ($(CONFIG_NX),y)
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NONFSDIRS += graphics libs$(DELIM)libnx
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CONTEXTDIRS += graphics libs$(DELIM)libnx
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else ifeq ($(CONFIG_NXFONTS),y)
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NONFSDIRS += libs$(DELIM)libnx
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CONTEXTDIRS += libs$(DELIM)libnx
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OTHERDIRS += graphics
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else
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OTHERDIRS += graphics libs$(DELIM)libnx
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endif
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ifeq ($(CONFIG_AUDIO),y)
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NONFSDIRS += audio
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else
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OTHERDIRS += audio
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endif
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ifeq ($(CONFIG_VIDEO),y)
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NONFSDIRS += video
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else
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OTHERDIRS += video
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endif
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ifeq ($(CONFIG_WIRELESS),y)
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NONFSDIRS += wireless
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else
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OTHERDIRS += wireless
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endif
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ifeq ($(CONFIG_LIBDSP),y)
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NONFSDIRS += libs$(DELIM)libdsp
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else
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OTHERDIRS += libs$(DELIM)libdsp
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endif
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# CLEANDIRS are the directories that will clean in. These are
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# all directories that we know about.
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# KERNDEPDIRS are the directories in which we will build target dependencies.
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# If NuttX and applications are built separately (CONFIG_BUILD_PROTECTED or
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# CONFIG_BUILD_KERNEL), then this holds only the directories containing
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# kernel files.
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# USERDEPDIRS. If NuttX and applications are built separately (CONFIG_BUILD_PROTECTED),
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# then this holds only the directories containing user files. If
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# CONFIG_BUILD_KERNEL is selected, then applications are not build at all.
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CLEANDIRS = $(NONFSDIRS) $(FSDIRS) $(USERDIRS) $(OTHERDIRS)
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KERNDEPDIRS = $(NONFSDIRS)
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USERDEPDIRS = $(USERDIRS)
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# Add file system directories to KERNDEPDIRS (they are already in CLEANDIRS)
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KERNDEPDIRS += $(FSDIRS)
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# Add networking directories to KERNDEPDIRS and CLEANDIRS
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ifeq ($(CONFIG_NET),y)
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KERNDEPDIRS += net
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endif
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CLEANDIRS += net
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ifeq ($(CONFIG_CRYPTO),y)
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KERNDEPDIRS += crypto
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endif
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CLEANDIRS += crypto
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