issue in building

[krispstack]

Applying ./patches/100-aclocal-skip-not-existing-directories.patch using plaintext:
patching file bin/aclocal.in

Applying ./patches/200-do-not-override-silent-rules.patch using plaintext:
patching file m4/silent.m4
touch /home/karthi/chaos_calmer/build_dir/host/automake-1.15/.prepared39a010ae98078b627fd56aefee27c46c
(cd /home/karthi/chaos_calmer/build_dir/host/automake-1.15; AUTOM4TE=/home/karthi/chaos_calmer/staging_dir/host/bin/autom4te AUTOCONF=/home/karthi/chaos_calmer/staging_dir/host/bin/autoconf AUTOMAKE=/home/karthi/chaos_calmer/staging_dir/host/bin/automake ACLOCAL=/home/karthi/chaos_calmer/staging_dir/host/bin/aclocal AUTOHEADER=/home/karthi/chaos_calmer/staging_dir/host/bin/autoheader LIBTOOLIZE=/home/karthi/chaos_calmer/staging_dir/host/bin/libtoolize LIBTOOL=/home/karthi/chaos_calmer/staging_dir/host/bin/libtool M4=/home/karthi/chaos_calmer/staging_dir/host/bin/m4 AUTOPOINT=true STAGING_DIR="" ./bootstrap.sh)
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/${ <-- HERE ([^ \t=:+{}]+)}/ at ./bin/automake.tmp line 3938.
Makefile:50: recipe for target '/home/karthi/chaos_calmer/build_dir/host/automake-1.15/.configured' failed
make[3]: *** [/home/karthi/chaos_calmer/build_dir/host/automake-1.15/.configured] Error 255
make[3]: Leaving directory '/home/karthi/chaos_calmer/tools/automake'
tools/Makefile:122: recipe for target 'tools/automake/compile' failed
make[2]: *** [tools/automake/compile] Error 2
make[2]: Leaving directory '/home/karthi/chaos_calmer'
tools/Makefile:121: recipe for target '/home/karthi/chaos_calmer/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.tools_install_yynyynynynyyyyyyyyynyyyyyyyyynyyyyynnyyynnyynnnyy' failed
make[1]: *** [/home/karthi/chaos_calmer/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.tools_install_yynyynynynyyyyyyyyynyyyyyyyyynyyyyynnyyynnyynnnyy] Error 2
make[1]: Leaving directory '/home/karthi/chaos_calmer'
/home/karthi/chaos_calmer/include/toplevel.mk:181: recipe for target 'world' failed
make: *** [world] Error 2

[sajetan]

Try adding this missing patch (010-automake-port-to-Perl-5.22-and-later.patch) in your tools/automake/patches.

[pawisoon]

Try adding this missing patch (010-automake-port-to-Perl-5.22-and-later.patch) in your tools/automake/patches.

Tried that and now I receive this:
/home/pawel/openwrt/build_dir/host/u-boot-2014.10/lib/rsa/rsa-sign.c: In function 'rsa_get_exponent': /home/pawel/openwrt/build_dir/host/u-boot-2014.10/lib/rsa/rsa-sign.c:279:21: error: dereferencing pointer to incomplete type 'RSA {aka struct rsa_st}' if (BN_num_bits(key->e) > 64) ^~ scripts/Makefile.host:134: recipe for target 'tools/lib/rsa/rsa-sign.o' failed make[5]: *** [tools/lib/rsa/rsa-sign.o] Error 1 Makefile:1195: recipe for target 'tools-only' failed make[4]: *** [tools-only] Error 2 make[4]: Leaving directory '/home/pawel/openwrt/build_dir/host/u-boot-2014.10' Makefile:46: recipe for target '/home/pawel/openwrt/build_dir/host/u-boot-2014.10/.built' failed make[3]: *** [/home/pawel/openwrt/build_dir/host/u-boot-2014.10/.built] Error 2 make[3]: Leaving directory '/home/pawel/openwrt/tools/mkimage' tools/Makefile:122: recipe for target 'tools/mkimage/compile' failed make[2]: *** [tools/mkimage/compile] Error 2 make[2]: Leaving directory '/home/pawel/openwrt' tools/Makefile:121: recipe for target '/home/pawel/openwrt/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.tools_install_yynyynynynyyyyyyyyynyyyyyyyyynyyyyynnyyynnyynnnyy' failed make[1]: *** [/home/pawel/openwrt/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.tools_install_yynyynynynyyyyyyyyynyyyyyyyyynyyyyynnyyynnyynnnyy] Error 2 make[1]: Leaving directory '/home/pawel/openwrt' /home/pawel/openwrt/include/toplevel.mk:181: recipe for target 'world' failed make: *** [world] Error 2