Unescaped left brace in regex is illegal here in regex when building PyLetMeCreate

[maisieccino]

When running the compile command for PyLetMeCreate I get an error about unescaped regex:

Command:

[mbell@laptop creator-sdk]$ make package/pyletmecreate/{clean,compile} -j1 V=s

Relevant output

make[3]: Entering directory '/home/mbell/creator-sdk/build_dir/target-mipsel_mips32r2_musl-1.1.15/libxml2-2.9.4'
 cd . && /bin/sh /home/mbell/creator-sdk/build_dir/target-mipsel_mips32r2_musl-1.1.15/libxml2-2.9.4/missing automake-1.15 --gnu
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /home/mbell/creator-sdk/staging_dir/host/bin/automake-1.15 line 3938.
make[3]: *** [Makefile:866: Makefile.in] Error 1
make[3]: Leaving directory '/home/mbell/creator-sdk/build_dir/target-mipsel_mips32r2_musl-1.1.15/libxml2-2.9.4'
make[2]: *** [Makefile:140: /home/mbell/creator-sdk/build_dir/target-mipsel_mips32r2_musl-1.1.15/libxml2-2.9.4/.built] Error 2
make[2]: Leaving directory '/home/mbell/creator-sdk/feeds/packages/libs/libxml2'
make[1]: *** [package/Makefile:197: package/feeds/packages/libxml2/compile] Error 2
make[1]: Leaving directory '/home/mbell/creator-sdk'
make: *** [/home/mbell/creator-sdk/include/toplevel.mk:187: package/pyletmecreate/compile] Error 2

Apparently related to an issue in OpenWRT, which was apparently fixed upstream, in the LEDE branch of the project.