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OpenWRT Cross Compiling: Difference between revisions

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*CentOS 8, OpenWRT 17.07.3, Perl 5.28.1
*CentOS 7.8, OpenWRT 19.07.3, Perl 5.28.1
**...a working CentOS system.
**yum install binutils bzip2 gcc gcc-c++ gawk gettext flex ncurses-devel zlib-devel zlib-static make patch unzip openssl-devel perl-ExtUtils-MakeMaker glibc glibc-devel glibc-static ncurses-libs sed sdcc intltool sharutils bison wget git-core xz
**OpenWRT, browse GIT Repository: [https://git.openwrt.org/openwrt/ https://git.openwrt.org/]
**git clone -b openwrt-19.07 <nowiki>https://github.com/openwrt/openwrt.git</nowiki> (this should download just the 19.07.01, .03, .04, etc branch)
*Directory: The default for most of the items below is the users "home" directory ( ~ )
*Directory: The default for most of the items below is the users "home" directory ( ~ )
*Perlbrew for matching the exact version of Perl on the router and controlling it easily: https://perlbrew.pl/
*Perlbrew for matching the exact version of Perl on the router and controlling it easily: https://perlbrew.pl/
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**make test
**make test
**make dist
**make dist
*OpenSSL Cross Compiling
*OpenSSL Cross Compiling (make sure the appropriate version of Perl is selected via perlbrew, above)
**https://stackoverflow.com/questions/15539062/cross-compiling-of-openssl-for-linux-arm-v5te-linux-gnueabi-toolchain
**Links;
**./Configure LIST
***https://stackoverflow.com/questions/15539062/cross-compiling-of-openssl-for-linux-arm-v5te-linux-gnueabi-toolchain
***https://wiki.openssl.org/index.php/Compilation_and_Installation
***For ARM infor and --prefix and --openssldir info: https://stackoverflow.com/questions/15539062/cross-compiling-of-openssl-for-linux-arm-v5te-linux-gnueabi-toolchain
***https://centos.pkgs.org/7/epel-x86_64/binutils-arm-linux-gnu-2.27-9.el7.1.x86_64.rpm.html
***https://pkgs.org/search/?q=binutils-arm-linux-gnu
**wget OpenSSL URL ( https://www.openssl.org/source/ )
**./Configure LIST ( linux-armv4 )
**./Configure linux-armv4 ( ./config is equivalent to ./Configure x86_64 )
**--prefix=/WhatEverPathForCompiledFiles/
**--openssldir=/usr/ (that's where OpenWRT puts openssl, /usr/bin/ )
**make
**make depend
**make dist, err, make tar (for OpenSSL, but it doesn't work of course);
***Key piece of information for doing it manually: https://stackoverflow.com/questions/1506462/what-files-did-make-install-copy-and-where and https://stackoverflow.com/questions/11307465/destdir-and-prefix-of-make
***make install DESTDIR=
**Header files should be in /usr/include
**Header files should be in /usr/include
*Compiling
*Compiling
**file NameOfBinary: Shows information about binary file (opkg install file)
**file NameOfBinary: Shows information about binary file (opkg install file)
**
**Shared VS Non-Shared, Static VS Shared, .a VS .so ( using the shared switch, as in ./Configure XYZ shared
***Static: EVERYTHING in a single binary / executable file
***Shared: Dependencies located in other files
 
 
...quitting for now because the instructions at https://openwrt.org/docs/guide-developer/build-system/use-buildsystem#selecting_a_specific_major_revision are a pathetic joke.  Go ahead, try them, see if it works.  Nope....
 
Additional notes from other failed attempts;
 
<nowiki>http://transit.iut2.upmf-grenoble.fr/cgi-bin/man/man2html?Crypt::SSLeay+3</nowiki>
 
<nowiki>https://github.com/Entware/Entware-ng/wiki/Using-gcc-%28native-compilation%29</nowiki>
 
perl Makefile.PL --incpath /usr/src/lib
 
perl Makefile.PL -- $openssl_path=/usr/src/lib/openssl
 
echo | gcc -v -E -
 
 
perl -V
 
 
/usr/src/net/Net_SSLeay.pm-1.23/MYMETA.yml
 
 
 
env
 
 
opkg install perl-dev
 
 
opkg install openssl-
 
 
<nowiki>https://github.com/Entware/Entware-ng/wiki/Self-installation-of-perl-modules</nowiki>
 
 
 
<nowiki>https://github.com/Entware/Entware-ng/issues/430</nowiki>
 
<nowiki>https://github.com/Entware/Entware/wiki/Using-GCC-for-native-compilation</nowiki>
 
 
/usr/bin/ld: cannot find -lssl
 
/usr/bin/ld: cannot find -lcrypto
 
/usr/bin/ld: cannot find -ldl
 
ln -s
 
ld -lcrypto --verbose
 
find /
 
 
<nowiki>https://stackoverflow.com/questions/16710047/usr-bin-ld-cannot-find-lnameofthelibrary</nowiki>
 
For the /usr/bin/ld Issue: <nowiki>https://stackoverflow.com/questions/16710047/usr-bin-ld-cannot-find-lnameofthelibrary</nowiki>
 
 
/usr/bin/opensslOpenSSL 1.1.1g  21 Apr 2020
 
built on: Thu Jul 30 19:43:27 2020 UTC
 
platform: linux-arm-openwrt
 
options:  bn(64,32) rc4(char) des(long) blowfish(ptr)
 
compiler: arm-openwrt-linux-muslgnueabi-gcc -fPIC -pthread -Wa,--noexecstack -Wall -O3 -Os -pipe -fno-caller-saves -fno-plt -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -mfloat-abi=hard -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -fpic -ffunction-sections -fdata-sections -znow -zrelro -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM -DECP_NISTZ256_ASM -DPOLY1305_ASM -DNDEBUG -DOPENSSL_PREFER_CHACHA_OVER_GCM -DOPENSSL_SMALL_FOOTPRINT
 
OPENSSLDIR: "/etc/ssl"
 
ENGINESDIR: "/usr/lib/engines-1.1"
 
Seeding source: os-specific
 
OpenSSL>version -a
 
 
<nowiki>https://www.cpan.org/modules/by-module/Net/Net-SSLeay-1.73.readme</nowiki>
 
 
<nowiki>https://stackoverflow.com/questions/60521205/how-can-i-install-netssleay-with-perlbrew-in-macos-catalina</nowiki>
 
 
 
 
 
 
perl Makefile.PL -- INC=-I/usr/src/lib/ -- OPENSSL_PREFIX=/usr/src/openssl_compiled/usr/local
 
 
 
SSLeay.c: In function 'XS_Net__SSLeay_CTX_sessions':
 
SSLeay.c:3608:2: error: unknown type name 'LHASH'; did you mean '_LHASH'?
 
  LHASH * RETVAL;
 
<nowiki>  ^~~~~</nowiki>
 
 
 
  SSLeay.c line 3608, change LHASH to _LHASH
 
OpenSSL
 
remove -ldl and all -pthread references near EX_LIBS (from <nowiki>https://github.com/openssl/openssl/issues/3106</nowiki>)
 
Change destination directory for GCC Make: <nowiki>https://stackoverflow.com/questions/3239343/make-install-but-not-to-default-directories</nowiki>
 
...sure enough, in Makefile;
 
<nowiki>#</nowiki> DESTDIR is for package builders so that they can configure for, say,
 
<nowiki>#</nowiki> /usr/ and yet have everything installed to /tmp/somedir/usr/.
 
<nowiki>#</nowiki> Normally it is left empty.
 
DESTDIR=
 
Add the paths in Make File that include the new SSL stuff
 
DDLFLAGS = -shared -L/usr/src/openssl_compiled/usr/local/ -L/usr/src/openssl_compiled/usr/local/lib -L/usr -L/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a9+vfpv3-d16_musl_eabi/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a9+vfpv3-d16_musl_eabi/lib -L/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_cortex-a9+vfpv3-d16_gcc-7.5.0_musl_eabi/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_cortex-a9+vfpv3-d16_gcc-7.5.0_musl_eabi/lib -znow -zrelro
 
LDFLAGS = -L/usr/src/openssl_compiled/usr/local/ -L/usr/src/openssl_compiled/usr/local/lib -L/usr -L/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a9+vfpv3-d16_musl_eabi/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/target-arm_cortex-a9+vfpv3-d16_musl_eabi/lib -L/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_cortex-a9+vfpv3-d16_gcc-7.5.0_musl_eabi/usr/lib -L/builder/shared-workdir/build/sdk/staging_dir/toolchain-arm_cortex-a9+vfpv3-d16_gcc-7.5.0_musl_eabi/lib -znow -zrelro
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