Buildroot Quick Start

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<source lang=bash>
 
<source lang=bash>
 +
comcat@jackslab:~/buildroot-2020.11.2$ ls
 +
arch  board  boot  CHANGES  Config.in  Config.in.legacy  configs  COPYING  DEVELOPERS  dl  docs  fs  linux  Makefile  Makefile.legacy  output  package  README  support  system  toolchain  utils
 +
</source>
  
 +
 +
Download package cache dir:
 +
 +
<source lang=bash>
 +
dl/
 
</source>
 
</source>
 +
 +
<br>
 +
 +
== 添加包 ==
 +
 +
<source lang=bash>
 +
comcat@jackslab:~/buildroot-2020.11.2$ mkdir -p package/helloworld/
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</source>
 +
 +
在该目录下新建 '''Config.in''':
 +
 +
<source lang=bash>
 +
config BR2_PACKAGE_HELLOWORLD
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        bool "helloworld"
 +
        help
 +
          hello world package
 +
</source>
 +
 +
新建 '''helloworld.mk''':
 +
 +
<source lang=bash>
 +
comcat@lab:~/buildroot-2020.11.2$ cat package/helloworld/helloworld.mk
 +
HELLOWORLD_VERSION = 1.0.0
 +
HELLOWORLD_SITE = $(TOPDIR)/../helloworld_src
 +
HELLOWORLD_SITE_METHOD = local
 +
 +
define HELLOWORLD_BUILD_CMDS
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        $(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(@D)
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endef
 +
 +
define HELLOWORLD_INSTALL_TARGET_CMDS
 +
        $(INSTALL) -D -m 0755 $(@D)/helloworld $(TARGET_DIR)/usr/bin/helloworld
 +
        #$(INSTALL) -D -m 0755 $(@D)/helloworld-init $(TARGET_DIR)/etc/init.d/S90helloworld
 +
        #$(INSTALL) -D -m 0755 $(@D)/rx $(TARGET_DIR)/usr/bin/rx
 +
endef
 +
 +
$(eval $(generic-package))
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</source>
 +
 +
* HELLOWORLD_SITE is the location of the helloworld.c, init script, and makefile.
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* $(TOPDIR) is the top directory, in our case ~/buildroot-2020.11.2
 +
* $(@D) is the build directory.
 +
 +
 +
编辑 ~/buildroot-2020.11.2/package/Config.in，增加如下内容：
 +
 +
  source "package/helloworld/Config.in"
  
 
<br>
 
<br>
  
 
== 准备代码 ==
 
== 准备代码 ==
 +
 +
<source lang=bash>
 +
$ mkdir ~/helloworld_src
 +
</source>
 +
 +
放入 helloworld.c Makefile:
 +
 +
'''helloworld.c:'''
 +
 +
<source lang=cpp>
 +
#include <stdio.h>
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#include <unistd.h>
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int main(int argc, int *argv[])
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{
 +
while(1)
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{
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printf("Hello world\n");
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sleep(1);
 +
}
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return 0;
 +
}
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</source>
 +
 +
'''Makefile:'''
 +
 +
<source lang=makefile>
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OBJS=helloworld.o
 +
 +
all: helloworld
 +
 +
helloworld: $(OBJS)
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$(CC) $(LDFLAGS) -o helloworld $(OBJS)
 +
 +
$(OBJS): %.o: %.c
 +
$(CC) $(CFLAGS) -c -o $@ $<
 +
</source>
 +
 +
or:
 +
 +
<source lang=bash>
 +
all: tx rx loopback cad
 +
 +
#CC=arm-linux-gnueabi-gcc
 +
 +
tx: common.c tx.c
 +
        $(CC) $(LDFLAGS) $(CFLAGS) -I./ $^ -o $@
 +
 +
rx: common.c rx.c
 +
        $(CC) $(LDFLAGS) $(CFLAGS) -I./ $^ -o $@
 +
 +
clean:
 +
        rm -f tx rx loopback cad
 +
</source>
 +
 +
<br>
 +
 +
== 编译构建 ==
 +
 +
<source lang=bash>
 +
comcat@jackslab:~/buildroot-2020.11.2$ make menuconfig
 +
comcat@jackslab:~/buildroot-2020.11.2$ make
 +
comcat@jackslab:~/buildroot-2020.11.2$ ls output/images/rootfs.tar
 +
output/images/rootfs.tar
 +
</source>
  
 
<br>
 
<br>

2023年7月12日 (三) 18:13的最后版本

目录

[编辑] 1 Overview

目录结构： 

comcat@jackslab:~/buildroot-2020.11.2$ ls
arch  board  boot  CHANGES  Config.in  Config.in.legacy  configs  COPYING  DEVELOPERS  dl  docs  fs  linux  Makefile  Makefile.legacy  output  package  README  support  system  toolchain  utils


Download package cache dir: 

dl/


[编辑] 2 添加包 

comcat@jackslab:~/buildroot-2020.11.2$ mkdir -p package/helloworld/

在该目录下新建 Config.in: 

config BR2_PACKAGE_HELLOWORLD
        bool "helloworld"
        help
          hello world package

新建 helloworld.mk: 

comcat@lab:~/buildroot-2020.11.2$ cat package/helloworld/helloworld.mk
HELLOWORLD_VERSION = 1.0.0
HELLOWORLD_SITE = $(TOPDIR)/../helloworld_src
HELLOWORLD_SITE_METHOD = local

define HELLOWORLD_BUILD_CMDS
        $(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(@D)
endef

define HELLOWORLD_INSTALL_TARGET_CMDS
        $(INSTALL) -D -m 0755 $(@D)/helloworld $(TARGET_DIR)/usr/bin/helloworld
        #$(INSTALL) -D -m 0755 $(@D)/helloworld-init $(TARGET_DIR)/etc/init.d/S90helloworld	
        #$(INSTALL) -D -m 0755 $(@D)/rx $(TARGET_DIR)/usr/bin/rx
endef

$(eval $(generic-package))
  • HELLOWORLD_SITE is the location of the helloworld.c, init script, and makefile.
  • $(TOPDIR) is the top directory, in our case ~/buildroot-2020.11.2
  • $(@D) is the build directory.


编辑 ~/buildroot-2020.11.2/package/Config.in，增加如下内容： 

 source "package/helloworld/Config.in"


[编辑] 3 准备代码 

$ mkdir ~/helloworld_src

放入 helloworld.c Makefile:

helloworld.c: 

#include <stdio.h>
#include <unistd.h>

int main(int argc, int *argv[])
{
	while(1)
	{
		printf("Hello world\n");
		sleep(1);
	}
	return 0;
}

Makefile: 

OBJS=helloworld.o

all:	helloworld

helloworld:	$(OBJS)
	$(CC) $(LDFLAGS) -o helloworld $(OBJS)

$(OBJS): %.o:	%.c
	$(CC) $(CFLAGS) -c -o $@ $<

or: 

all: tx rx loopback cad

#CC=arm-linux-gnueabi-gcc

tx: common.c tx.c
        $(CC) $(LDFLAGS) $(CFLAGS) -I./ $^ -o $@

rx: common.c rx.c
        $(CC) $(LDFLAGS) $(CFLAGS) -I./ $^ -o $@

clean:
        rm -f tx rx loopback cad


[编辑] 4 编译构建 

comcat@jackslab:~/buildroot-2020.11.2$ make menuconfig
comcat@jackslab:~/buildroot-2020.11.2$ make
comcat@jackslab:~/buildroot-2020.11.2$ ls output/images/rootfs.tar
output/images/rootfs.tar


来自“http://wiki.jackslab.org/index.php?title=Buildroot_Quick_Start&oldid=16248”
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