make[4]: Entering directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/luasql-postgres/luasql-2.3.0'
ccache_cc -Os -pipe -matomic -marchs -fno-caller-saves -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result  -Wformat -Werror=format-security -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -fpic -std=gnu99 -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/target-arc_archs_uClibc-1.0.14/usr/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/target-arc_archs_uClibc-1.0.14/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/usr/include -I/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/staging_dir/toolchain-arc_archs_gcc-arc-2016.03_uClibc-1.0.14/include -DLUA_USE_LINUX   -c -o src/ls_postgres.o src/ls_postgres.c
src/ls_postgres.c:15:22: fatal error: libpq-fe.h: No such file or directory
 #include "libpq-fe.h"
                      ^
compilation terminated.
<builtin>: recipe for target 'src/ls_postgres.o' failed
make[4]: *** [src/ls_postgres.o] Error 1
make[4]: Leaving directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/luasql-postgres/luasql-2.3.0'
Makefile:116: recipe for target '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/luasql-postgres/luasql-2.3.0/.built' failed
make[3]: *** [/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/luasql-postgres/luasql-2.3.0/.built] Error 2