# Make wp76 error libjansson.so
**URL:** https://forum.legato.io/t/make-wp76-error-libjansson-so/4823
**Category:** Legato Application Framework
**Created:** [November 7, 2019, 11:59am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823 "2019-11-07T11:59:12Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@taojiafu](https://forum.legato.io/u/taojiafu)
#### Post date: [November 7, 2019, 11:59am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/1 "2019-11-07T11:59:12Z")
```
fhs@fhs-OptiPlex-7010:~/workspace/legato$ make wp76
Building Legato for target 'wp76'
Makefile:127: build/wp76/.config.mk: 没有那个文件或目录
GEN build/wp76/.config.mk
Building Legato for target 'wp76'
GEN version
GEN build/wp76/framework/include/le_config.h
MAKE tools
make[1]: Entering directory '/home/fhs/workspace/legato'
Using ninja installed at: /usr/bin/ninja
GEN /home/fhs/workspace/legato/build/tools/build.ninja
Tools arch: x86_64
NPM languageServer
MAKE mkPatch
make[2]: Entering directory '/home/fhs/workspace/legato/framework/tools/mkPatch'
CCLD /home/fhs/workspace/legato/bin/mkPatch
make[2]: Leaving directory '/home/fhs/workspace/legato/framework/tools/mkPatch'
NINJA /home/fhs/workspace/legato/build/tools/build.ninja
[87/87] Linking tool
make[1]: Leaving directory '/home/fhs/workspace/legato'
GEN sources.md5
GEN package.properties
GEN build/wp76/config.sh
MAKE framework
make[1]: Entering directory '/home/fhs/workspace/legato'
GEN /home/fhs/workspace/legato/build/wp76/framework/build.ninja
NINJA /home/fhs/workspace/legato/build/wp76/framework/build.ninja
[70/70] Dynamic linking liblegato
CCLD /home/fhs/workspace/legato/build/wp76/framework/lib/libComponent_le_pa_start.so
CCLD /home/fhs/workspace/legato/build/wp76/framework/bin/startSystem
MKEXE /home/fhs/workspace/legato/build/wp76/framework/bin/supervisor
[67/67] Linking C executable
MKEXE /home/fhs/workspace/legato/build/wp76/framework/bin/serviceDirectory
[5/5] Linking C executable
MKEXE /home/fhs/workspace/legato/build/wp76/framework/bin/logCtrlDaemon
[16/16] Linking C executable
MKEXE /home/fhs/workspace/legato/build/wp76/framework/bin/configTree
[30/30] Linking C executable
MKEXE /home/fhs/workspace/legato/build/wp76/framework/bin/watchdog
[40/40] Linking C executable
MKEXE /home/fhs/workspace/legato/build/wp76/framework/bin/updateDaemon
[64/64] Linking C executable
MAKE targetTools
make[2]: Entering directory '/home/fhs/workspace/legato'
CMAKE /home/fhs/workspace/legato/build/wp76/framework/lib/libjansson.so
Makefile.targetTools:107: recipe for target '/home/fhs/workspace/legato/build/wp76/framework/lib/libjansson.so' failed
make[2]: *** [/home/fhs/workspace/legato/build/wp76/framework/lib/libjansson.so] Error 1
make[2]: Leaving directory '/home/fhs/workspace/legato'
Makefile.framework:249: recipe for target 'targetTools' failed
make[1]: *** [targetTools] Error 2
make[1]: Leaving directory '/home/fhs/workspace/legato'
Makefile:535: recipe for target 'framework' failed
make: *** [framework] Error 2
```
Thank you for your answer
---
### Author:  [@taojiafu](https://forum.legato.io/u/taojiafu)
#### Post date: [November 7, 2019, 12:04pm UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/2 "2019-11-07T12:04:51Z")
```
export WP76_TOOLCHAIN_DIR=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi
export WP76_TOOLCHAIN_PREFIX=arm-poky-linux-gnueabi-
```
---
### Author:  [@taojiafu](https://forum.legato.io/u/taojiafu)
#### Post date: [November 8, 2019, 1:37am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/3 "2019-11-08T01:37:21Z")
```
/workspace/legato/build/wp76/framework/libjansson/CMakeFile/CMakeError.log
Determining if the C compiler works failed with the following output:
Change Dir: /home/fhs/workspace/legato/build/wp76/framework/libjansson/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_85400/fast"
make[3]: Entering directory '/home/fhs/workspace/legato/build/wp76/framework/libjansson/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_85400.dir/build.make CMakeFiles/cmTC_85400.dir/build
make[4]: Entering directory '/home/fhs/workspace/legato/build/wp76/framework/libjansson/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_85400.dir/testCCompiler.c.o
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc --sysroot= -o CMakeFiles/cmTC_85400.dir/testCCompiler.c.o -c /home/fhs/workspace/legato/build/wp76/framework/libjansson/CMakeFiles/CMakeTmp/testCCompiler.c
cc1: warning: include location "/usr/local/include" is unsafe for cross-compilation [-Wpoison-system-directories]
cc1: warning: include location "/usr/include" is unsafe for cross-compilation [-Wpoison-system-directories]
Linking C executable cmTC_85400
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_85400.dir/link.txt --verbose=1
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc --sysroot= CMakeFiles/cmTC_85400.dir/testCCompiler.c.o -o cmTC_85400 -rdynamic
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find crt1.o: No such file or directory
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find crti.o: No such file or directory
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find crtbegin.o: No such file or directory
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find -lgcc
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find -lgcc_s
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find -lc
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find -lgcc
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find -lgcc_s
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find crtend.o: No such file or directory
/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/4.9.1/ld: cannot find crtn.o: No such file or directory
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_85400.dir/build.make:97: recipe for target 'cmTC_85400' failed
make[4]: *** [cmTC_85400] Error 1
make[4]: Leaving directory '/home/fhs/workspace/legato/build/wp76/framework/libjansson/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_85400/fast' failed
make[3]: *** [cmTC_85400/fast] Error 2
make[3]: Leaving directory '/home/fhs/workspace/legato/build/wp76/framework/libjansson/CMakeFiles/CMakeTmp'
```
---
### Author:  [@jyijyi](https://forum.legato.io/u/jyijyi)
#### Post date: [November 8, 2019, 6:39am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/4 "2019-11-08T06:39:53Z")
Seems you use the wrong toolchain.
Y17 ext is wrong path.
---
### Author:  [@jyijyi](https://forum.legato.io/u/jyijyi)
#### Post date: [November 8, 2019, 6:40am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/5 "2019-11-08T06:40:38Z")
Also you need to make clean and then make first befor you type make wp76xx
---
### Author:  [@taojiafu](https://forum.legato.io/u/taojiafu)
#### Post date: [November 8, 2019, 6:51am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/6 "2019-11-08T06:51:52Z")
Hi. Nice to meet again.
The cross-compilation chain I use is “poky-swi-ext-glibc-x86\_64-meta-toolchain-swi-ext-armv7a-vfp-neon-toolchain-swi-ext-1.7.3.sh”
I executed bin/legs first, then executed make, but there is still an error.
make[2]: Entering directory ‘/home/fhs/workspace/legato/build/localhost’
make[2]: \*\*\* No rule to make target ‘user\_docs’。 停止。
make[2]: Leaving directory ‘/home/fhs/workspace/legato/build/localhost’
Makefile:621: recipe for target ‘user\_docs’ failed
make[1]: \*\*\* [user\_docs] Error 2
make[1]: Leaving directory ‘/home/fhs/workspace/legato’
Makefile:459: recipe for target ‘default’ failed
make: \*\*\* [default] Error 2
---
### Author:  [@taojiafu](https://forum.legato.io/u/taojiafu)
#### Post date: [November 8, 2019, 7:49am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/7 "2019-11-08T07:49:15Z")
HI.
I changed the environment variable to the following and it succeeded! I tried this yesterday, but I didn’t succeed, so amazing. Thank you for your reminder
```
export WP76XX_TOOLCHAIN_DIR=/opt/swi/y17-ext/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi
export WP76XX_TOOLCHAIN_PREFIX=arm-poky-linux-gnueabi-
```
---
### Author:  [@ian.yh.chu](https://forum.legato.io/u/ian.yh.chu)
#### Post date: [March 23, 2021, 10:49am UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/8 "2021-03-23T10:49:57Z")
I just facing the same issue.
My solution is installing cmake on my host building machine.
---
### Author:  [@kevine](https://forum.legato.io/u/kevine)
#### Post date: [May 18, 2021, 9:11pm UTC](https://forum.legato.io/t/make-wp76-error-libjansson-so/4823/9 "2021-05-18T21:11:11Z")
Installing cmake was also the solution for me, thank you