checking if gcc likes the -Werror flag... yes
checking for strerror... yes
checking whether strerror_r is declared... yes
checking whether strerror_r returns char *... no
optparse.c:141:1: warning: inlining failed in call to 'longopts_end': call is unlikely and code size would grow [-Winline]
optparse.c:141:1: warning: inlining failed in call to 'longopts_end': call is unlikely and code size would grow [-Winline]
optparse.c:141:1: warning: inlining failed in call to 'longopts_end': call is unlikely and code size would grow [-Winline]
optparse.c:141:1: warning: inlining failed in call to 'longopts_end': call is unlikely and code size would grow [-Winline]
   90 |         xmlErrorPtr err = xmlGetLastError();
  CC       librrdupd_la-rrd_error.lo
rrd_daemon.c:132:23: warning: inlining failed in call to 'areadlink.constprop': call is unlikely and code size would grow [-Winline]
rrd_daemon.c:132:23: warning: inlining failed in call to 'areadlink.constprop': call is unlikely and code size would grow [-Winline]
cc -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=gnu99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=gnu99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -I/usr/include -I../../src -I../../src -DUSE_TCL_STUBS -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -pthread -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/fribidi -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libxml2 -c ./tclrrd.c -DVERSION=\"1.9.0\"
cc -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=gnu99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -Wl,--as-needed,-O1,--sort-common -Wl,-z,pack-relative-relocs       -shared "-Wl,-rpath,/usr/lib" -L../../src/.libs -L../../src -L/usr/lib tclrrd.o -o tclrrd1.9.0.so -lrrd -lm -L/usr/lib -ltclstub8.6 -Wl,--as-needed,-O1,--sort-common -Wl,-z,pack-relative-relocs       
make[2]: *** [Makefile:769: python] Error 1
cc -c  -I/home/udu/aports/main/rrdtool/src/rrdtool-1.9.0/src -I/home/udu/aports/main/rrdtool/src/rrdtool-1.9.0/src -D_REENTRANT -D_GNU_SOURCE -D_GNU_SOURCE -fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -fstack-clash-protection -Wformat -Werror=format-security -fno-plt   -DVERSION=\"1.9\" -DXS_VERSION=\"1.9\" -fPIC "-I/usr/lib/perl5/core_perl/CORE"  -DPERLPATCHLEVEL=42 RRDs.c
cc  -shared -O2 -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -L/usr/local/lib -fstack-protector-strong  RRDs.o -L/home/udu/aports/main/rrdtool/src/rrdtool-1.9.0/src/.libs/ -Wl,--rpath -Wl,/usr/lib -lrrd  -o blib/arch/auto/RRDs/RRDs.so  \
make[1]: *** [Makefile:459: all-recursive] Error 1
make: *** [Makefile:513: all-recursive] Error 1
>>> ERROR: rrdtool: build failed