Buildroot Quick Start

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<source lang=bash>
 
<source lang=bash>
−
comcat@jackslab:~/f1c/buildroot-2020.11.2$ ls
+
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
 
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/
 +
</source>
 +
 +
在该目录下新建 '''Config.in''':
 +
 +
<source lang=bash>
 +
config BR2_PACKAGE_HELLOWORLD
 +
        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
 +
        $(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))
 +
</source>
 +
 +
* 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"
  
 
<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>
 +
#include <unistd.h>
 +
 +
int main(int argc, int *argv[])
 +
{
 +
while(1)
 +
{
 +
printf("Hello world\n");
 +
sleep(1);
 +
}
 +
return 0;
 +
}
 +
</source>
 +
 +
'''Makefile:'''
 +
 +
<source lang=makefile>
 +
OBJS=helloworld.o
 +
 +
all: helloworld
 +
 +
helloworld: $(OBJS)
 +
$(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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