gcc -DHAVE_CONFIG_H -I. -I../../agen5 -I.. -I.. -I../.. -I../autoopts -I../../autoopts -pthread -I/u/ROOT/usr/local/include/guile/3.0 -I/u/ROOT/usr/local/include -g -O2 -Wno-format-contains-nul -fno-strict-aliasing -MT autogen-ag.o -MD -MP -MF .deps/autogen-ag.Tpo -c -o autogen-ag.o `test -f 'ag.c' || echo '../../agen5/'`ag.c In file included from /u/ROOT/usr/local/include/guile/3.0/libguile.h:52:0, from ../../agen5/autogen.h:60, from ag.c:9: /u/ROOT/usr/local/include/guile/3.0/libguile/extensions.h:26:10: fatal error: libguile/libpath.h: No such file or directory #include "libguile/libpath.h" ^~~~~~~~~~~~~~~~~~~~ compilation terminated.
The "-I /u/ROOT/usr/local/include/guile/3.0" was used to find "libguile/extensions.h", so why would libguile/libpath.h not be found? Why would it not have been found after a full build and "make install"?