arm-linux-cc 4

配置完后执行编译安装命令。

make
make install
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执行make install的时候遇到了如下错误：

./libtool: line 1719: arm-none-linux-gnueabi-ranlib: command not found
Makefile:5118: recipe for target 'install-usrlib\_execLTLIBRARIES' failed
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出现错误的原因可以参考这篇文章make install时"arm-linux-ranlib command not found"，参照里面的方案切换成root用户执行install：

sudo su
make install
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install完成后记得不要忘了切换回原来的用户。

su usename
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3 重新配置makefile，编译出libuuid。

./configure CC=arm-none-linux-gnueabi-gcc CXX=arm-none-linux-gnueabi-g++ \
--prefix=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi \
--host=arm-none-linux-gnueabi --target=arm-none-linux-gnueabi  \
--without-python --without-tinfo --without-ncursesw \
--without-ncurses --without-systemd \
-disable-libmount --disable-libblkid --disable-libfdisk
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然后执行make install ,install 之前同样要使用su命令。之所以先编译libuuid是因为libfdisk和libblkid的编译依赖libuuid，否则会出现如下错误：

./.libs/libblkid.so: undefined reference to `uuid_unparse@UUID_1.0'
collect2: ld returned 1 exit status
Makefile:5977: recipe for target 'blkid' failed
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4 编译libblkid，因为libfdisk的编译依赖libblkid。

./configure CC=arm-none-linux-gnueabi-gcc CXX=arm-none-linux-gnueabi-g++ \
--prefix=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi \
--host=arm-none-linux-gnueabi --target=arm-none-linux-gnueabi  \
--without-python --without-tinfo --without-ncursesw --without-ncurses \
--without-systemd -disable-libmount --disable-libfdisk
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5 编译libfdisk，libmount的编译依赖libfdisk。

./configure CC=arm-none-linux-gnueabi-gcc CXX=arm-none-linux-gnueabi-g++ \
--prefix=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi \
--host=arm-none-linux-gnueabi --target=arm-none-linux-gnueabi  \
--without-python --without-tinfo --without-ncursesw --without-ncurses \
--without-systemd -disable-libmount
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6 编译libmount

./configure CC=arm-none-linux-gnueabi-gcc CXX=arm-none-linux-gnueabi-g++ \
--prefix=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi \
--host=arm-none-linux-gnueabi --target=arm-none-linux-gnueabi  \
--without-python --without-tinfo --without-ncursesw --without-ncurses \
--without-systemd
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终于编译除了libmount，像俄罗斯套娃一样。note:如果编译的时候某个项目缺少依赖的lib，可以先disable该项目，先编译出依赖再开启。
libmount install完成后重新配置meson，但是仍然会出现找不到该lib的错误。

glib| Run-time dependency mount found: NO
subprojects/glib/meson.build:1868:2: ERROR: Pkg-config binary for machine MachineChoice.HOST not found. Giving up.
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install 仍然找不到lib是因为pkgconfig文件路径不正确，pkgconfig文件的后缀名是.pc，里面指明了该lib的头文件以及so地址，如mount.pc。

prefix=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi
exec\_prefix=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi
libdir=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi/lib
includedir=/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi/include

Name: mount
Description: mount library
Version: 2.32.1
Requires.private: blkid
Cflags: -I${includedir}/libmount
Libs: -L${libdir} -lmount
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之前编译的libmount install 在了toolchain目录，所以在cross_file.txt中更新pkgconfig路径。

[properties]
pkg_config_libdir = ['/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi/lib/pkgconfig']

[binaries]
c = 'arm-none-linux-gnueabi-gcc'
cpp = 'arm-none-linux-gnueabi-g++'
ar = 'arm-none-linux-gnueabi-ar'
strip = 'arm-none-linux-gnueabi-strip'
pkgconfig = 'pkg-config'

[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'ARM9'
endian = 'little'

[build_machine]
system = 'linux'
cpu_family = 'x86\_64'
cpu = 'i686'
endian = 'little'
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更新pkgconfig就可以meson配置时就可以检测到该lib了，会出现以下log。

Run-time dependency mount found: YES 2.32.1
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3 gst-omx配置错误

meson 配置gst-omx时会出现以下错误：

subprojects/gst-omx/meson.build:220:2: ERROR: Problem encountered: Unsupported omx target specified. Use the -Dtarget option
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原因option 中target参数没有指定的原因，所以通过-D参数修改subprojects/gst-omx目录下meson_option.txt中target选项。

meson build --cross-file cross_file.txt -D gst-omx:target=rpi
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不出意外的话这次会配置成功，会出现以下log:

All GStreamer modules 1.18.5.1

  Subprojects
    FFmpeg                    : YES 12 warnings
    avtp                      : YES
    dssim                     : NO Dependency "libpng" not found, tried pkgconfig
    gl-headers                : YES
    glib                      : YES 4 warnings
    glib-networking           : NO Problem encountered: No TLS backends enabled. Please enable at least one TLS backend
    gst-devtools              : YES
    gst-editing-services      : NO Feature 'ges' disabled
    gst-examples              : YES
    gst-integration-testsuites: YES
    gst-libav                 : YES
    gst-omx                   : NO Feature 'omx' disabled
    gst-plugins-bad           : YES 1 warnings
    gst-plugins-base          : YES 2 warnings
    gst-plugins-good          : YES 2 warnings
    gst-plugins-rs            : NO Feature 'rs' disabled
    gst-plugins-ugly          : NO Requested variable "plugins\_cache\_generator" not found.
    gst-python                : NO Subproject "subprojects/pygobject" required but not found.
    gst-rtsp-server           : YES
    gstreamer                 : YES 3 warnings
    gstreamer-sharp           : NO Feature 'sharp' disabled
    gstreamer-vaapi           : NO Feature 'vaapi' disabled
    json-glib                 : YES
    libdrm                    : YES
    libffi                    : YES
    libmicrodns               : YES
    libnice                   : NO Problem encountered: Either GnuTLS or OpenSSL is required as crypto library, but neither was found
    libopenjp2                : NO Dependency "wxWidgets" not found, tried config-tool
    libpsl                    : YES
    libsoup                   : YES 4 warnings
    libxml2                   : YES
    openh264                  : NO Program 'nasm nasm.exe' not found
    openssl                   : NO Neither a subproject directory nor a openssl.wrap file was found.
    orc                       : YES 3 warnings
    pygobject                 : NO Python dependency not found
    sqlite                    : YES
    tinyalsa                  : NO Neither a subproject directory nor a tinyalsa.wrap file was found.
    x264                      : YES

Found ninja-1.10.2.git.kitware.jobserver-1 at /usr/local/bin/ninja
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3 编译过程中遇到的问题

配置成功后可以执行编译命令：

ninja -C build
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编译的过程中遇到了不少问题，逐一记录解决方案。

1 编译glib失败

编译glib中遇到了以下错误：

../subprojects/glib/glib/gnulib/xsize.h:65: error: no previous prototype for 'xsum'
../subprojects/glib/glib/gnulib/xsize.h:76: error: no previous prototype for 'xsum3'
../subprojects/glib/glib/gnulib/xsize.h:86: error: no previous prototype for 'xsum4'
../subprojects/glib/glib/gnulib/xsize.h:96: error: no previous prototype for 'xmax'
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解决方案可以参考arm-linux-cc 4.4.3 交叉编译glib 2.70.1。
直接subprojects/glib目录meson.build文件中加一句use_system_printf = true，强制使用系统print，不编译vasnprintf。

# Our printf is 'good' only if vsnpintf()/snprintf()/printf() supports C99 well enough
use_system_printf = have_good_vsnprintf and have_good_snprintf and have_good_printf
use_system_printf = true
glib_conf.set('USE\_SYSTEM\_PRINTF', use_system_printf)
glibconfig_conf.set('GLIB\_USING\_SYSTEM\_PRINTF', use_system_printf)
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2 编译gst-plugins-base遇到“declarations are only allowed in C99 mode”错误

错误信息如下：

../subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoaggregator.c:2772: error: 'for' loop initial declarations are only allowed in C99 mode
../subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoaggregator.c:2772: note: use option -std=c99 or -std=gnu99 to compile your code
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出现错误的原因是gcc是基于c89标准的，而C89标准不支持循环语句如下这样定义：

for(int i=0; i
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必须要写成下面这样：

int i;
for(i=0;i
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卧底个乖乖，难道要逐一改用到for循环的源码吗，那岂不是要人命！当然不是，编译的时候可以通过添加参数换成gnu99标准就可以了，编译单个文件可以这样写：

gcc src.c -std=gnu99 -o src
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meson 编译在cross_file.txt中添加参数就可以了，更改后文件如下：

[properties]
pkg_config_libdir = ['/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi/lib/pkgconfig', '/home/zhy/code/toolchain\_lib/lib/pkgconfig']
c_args = ['-std=gnu99']

[binaries]
c = 'arm-none-linux-gnueabi-gcc'
cpp = 'arm-none-linux-gnueabi-g++'
ar = 'arm-none-linux-gnueabi-ar'
strip = 'arm-none-linux-gnueabi-strip'
pkgconfig = 'pkg-config'

[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'ARM9'
endian = 'little'

[build_machine]
system = 'linux'
cpu_family = 'x86\_64'
cpu = 'x86\_64'
endian = 'little'
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3 编译gst-plugins-good遇到“‘O_CLOEXEC’ undeclared”错误

错误信息入下：

../subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c:3032: error: 'O\_CLOEXEC' undeclared (first use in this function)
../subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c:3032: error: (Each undeclared identifier is reported only once
../subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c:3032: error: for each function it appears in.)
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原因是O_CLOEXEC宏未定义，同样在cross_file.txt添加宏定义，添加后的cross_file.txt：

[properties]
pkg_config_libdir = ['/usr/local/arm/opt/FriendlyARM/toolschain/4.4.3/arm-none-linux-gnueabi/lib/pkgconfig', '/home/zhy/code/toolchain\_lib/lib/pkgconfig']
c_args = ['-std=gnu99', '-D\_GNU\_SOURCE']

[binaries]
c = 'arm-none-linux-gnueabi-gcc'
cpp = 'arm-none-linux-gnueabi-g++'
ar = 'arm-none-linux-gnueabi-ar'
strip = 'arm-none-linux-gnueabi-strip'
pkgconfig = 'pkg-config'

[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'ARM9'
endian = 'little'

[build_machine]
system = 'linux'
cpu_family = 'x86\_64'
cpu = 'x86\_64'
endian = 'little'
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cross_file.txt来来回回改了三次，因为是记录过程，所以没有一次性写清楚。

4 编译libdrm遇到“undefined reference to ‘clock_gettime’”错误

错误信息如下：

subprojects/libdrm-2.4.100/amdgpu/libdrm_amdgpu.so.1.0.0.p/amdgpu_cs.c.o: In function `amdgpu\_cs\_calculate\_timeout':
/home/zhy/code/gstreamer/source\_code/gst-build/build/../subprojects/libdrm-2.4.100/amdgpu/amdgpu\_cs.c:407: undefined reference to `clock_gettime'
collect2: ld returned 1 exit status
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查看错误信息是在编译libdrm_amdgpu时出错，因为不需要amdgpu模块，所以选择不编译，将gst-build/subprojects/libdrm-2.4.100/meson_option.txt中amdgpu设置为false。

option(
  'amdgpu',
  type : 'combo',
  value : 'false',
  choices : ['true', 'false', 'auto'],
  description : '''Enable support for amdgpu's KMS API.''',
)
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5 编译ges遇到“redefinition of typedef ‘GESMarkerList’”错误

错误信息如下：

../subprojects/gst-editing-services/ges/ges-marker-list.h:49: error: redefinition of typedef 'GESMarkerList'
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注：本文转载自blog.csdn.net的2401_85125383的文章"https://blog.csdn.net/2401_85125383/article/details/141965092"。版权归原作者所有，此博客不拥有其著作权，亦不承担相应法律责任。如有侵权，请联系我们删除。
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