[FS#984] mxs: build failure: u-boot 2016.01 fails to build with host OpenSSL 1.1

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Baptiste Jonglez (bjonglez) 

Attached to Project - LEDE Project
Summary - mxs: build failure: u-boot 2016.01 fails to build with host OpenSSL 1.1
Task Type - Bug Report
Category - Base system
Status - New
Assigned To - 
Operating System - All
Severity - Low
Priority - Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - While test-building all architectures on latest lede-17.01 (https://git.lede-project.org/dc8392f6a) with ''CONFIG_ALL_KMODS=y'', I bumped on this build failure for mxs:


make[3]: Entering directory '/home/bjonglez/lede-17.01/package/boot/uboot-mxs'     
make -C /home/bjonglez/lede-17.01/build_dir/target-arm_arm926ej-s_musl-1.1.16_eabi/u-boot-duckbill/u-boot-2016.01 CROSS_COMPILE=arm-openwrt-linux-muslgnueabi- u-boot.sb
make[4]: Entering directory '/home/bjonglez/lede-17.01/build_dir/target-arm_arm926ej-s_musl-1.1.16_eabi/u-boot-duckbill/u-boot-2016.01'
  CHK     include/config/uboot.release
  CHK     include/generated/version_autogenerated.h
  CHK     include/generated/timestamp_autogenerated.h
  CHK     include/generated/generic-asm-offsets.h
  CHK     include/generated/asm-offsets.h
  HOSTCC  tools/mxsimage.o
tools/mxsimage.c:147:19: error: field 'cipher_ctx' has incomplete type
  EVP_CIPHER_CTX   cipher_ctx;
                   ^~~~~~~~~~
tools/mxsimage.c:148:15: error: field 'md_ctx' has incomplete type
  EVP_MD_CTX   md_ctx;
               ^~~~~~
tools/mxsimage.c: In function 'sb_postfill_image_header':
tools/mxsimage.c:1325:13: error: storage size of 'md_ctx' isn't known
  EVP_MD_CTX md_ctx;
             ^~~~~~
tools/mxsimage.c:1325:13: warning: unused variable 'md_ctx' [-Wunused-variable]
tools/mxsimage.c: In function 'sb_verify_image_header':
tools/mxsimage.c:1624:13: error: storage size of 'md_ctx' isn't known
  EVP_MD_CTX md_ctx;
             ^~~~~~
tools/mxsimage.c:1624:13: warning: unused variable 'md_ctx' [-Wunused-variable]
scripts/Makefile.host:108: recipe for target 'tools/mxsimage.o' failed
make[5]: *** [tools/mxsimage.o] Error 1
Makefile:1211: recipe for target 'tools' failed
make[4]: *** [tools] Error 2
make[4]: Leaving directory '/home/bjonglez/lede-17.01/build_dir/target-arm_arm926ej-s_musl-1.1.16_eabi/u-boot-duckbill/u-boot-2016.01'
Makefile:93: recipe for target '/home/bjonglez/lede-17.01/build_dir/target-arm_arm926ej-s_musl-1.1.16_eabi/u-boot-duckbill/u-boot-2016.01/.built' failed
make[3]: *** [/home/bjonglez/lede-17.01/build_dir/target-arm_arm926ej-s_musl-1.1.16_eabi/u-boot-duckbill/u-boot-2016.01/.built] Error 2
make[3]: Leaving directory '/home/bjonglez/lede-17.01/package/boot/uboot-mxs'
package/Makefile:105: recipe for target 'package/boot/uboot-mxs/compile' failed
make[2]: *** [package/boot/uboot-mxs/compile] Error 2


It looks like an API issue with host OpenSSL 1.1, similar to FS#182

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=984