I'm building GnuPG 2.2.12 from sources. I'm working on Fedora 29, x86_64 (fully patched). The build eventually fails.
gcc -DHAVE_CONFIG_H -I. -I../.. -I../../common -DLOCALEDIR=\"/usr/local/share/locale\" -DGNUPG_BINDIR="\"/usr/local/bin\"" -DGNUPG_LIBEXECDIR="\"/usr/local/libexec\"" -DGNUPG_LIBDIR="\"/usr/local/lib64/gnupg\"" -DGNUPG_DATADIR="\"/usr/local/share/gnupg\"" -DGNUPG_SYSCONFDIR="\"/usr/local/etc/gnupg\"" -DGNUPG_LOCALSTATEDIR="\"/usr/local/var\"" -I/usr/local/include -DNDEBUG -imacros scheme-config.h -I/usr/local/include -I/usr/local/include -I/usr/local/include -Wall -Wno-pointer-sign -Wpointer-arith -g2 -O2 -m64 -march=native -fPIC -MT gpgscm-scheme.o -MD -MP -MF .deps/gpgscm-scheme.Tpo -c -o gpgscm-scheme.o `test -f 'scheme.c' || echo './'`scheme.c gcc -DHAVE_CONFIG_H -I. -I../.. -I../../common -DLOCALEDIR=\"/usr/local/share/locale\" -DGNUPG_BINDIR="\"/usr/local/bin\"" -DGNUPG_LIBEXECDIR="\"/usr/local/libexec\"" -DGNUPG_LIBDIR="\"/usr/local/lib64/gnupg\"" -DGNUPG_DATADIR="\"/usr/local/share/gnupg\"" -DGNUPG_SYSCONFDIR="\"/usr/local/etc/gnupg\"" -DGNUPG_LOCALSTATEDIR="\"/usr/local/var\"" -I/usr/local/include -DNDEBUG -Wall -Wno-pointer-sign -Wpointer-arith -g2 -O2 -m64 -march=native -fPIC -MT t-child.o -MD -MP -MF .deps/t-child.Tpo -c -o t-child.o t-child.c scheme.c: In function ‘gc_reservation_failure’: scheme.c:875:33: error: expected ‘;’ before ‘abort’ "insufficient reservation\n") ^ ; scheme.c:882:3: abort(); ~~~~~ mv -f .deps/t-child.Tpo .deps/t-child.Po gcc -Wall -Wno-pointer-sign -Wpointer-arith -g2 -O2 -m64 -march=native -fPIC -L/usr/local/lib64 -m64 -Wl,-R,/usr/local/lib64 -Wl,--enable-new-dtags -o t-child t-child.o scheme.c: In function ‘new_slot_in_env’: scheme.c:2841:11: warning: variable ‘slot’ set but not used [-Wunused-but-set-variable] pointer slot; ^~~~ ffi.c: In function ‘ffi_sprintf’: ffi.c:1284:13: warning: variable ‘written’ set but not used [-Wunused-but-set-variable] int size, written; ^~~~~~~ ffi.c: In function ‘ffi_scheme_eval’: ffi.c:1310:13: warning: variable ‘written’ set but not used [-Wunused-but-set-variable] int size, written; ^~~~~~~ scheme.c: In function ‘scheme_init_custom_alloc’: scheme.c:5618:7: error: ‘scheme’ {aka ‘struct scheme’} has no member named ‘reserved_lineno’; did you mean ‘reserved_cells’? sc->reserved_lineno = 0; ^~~~~~~~~~~~~~~ reserved_cells scheme.c: In function ‘type_to_string’: scheme.c:173:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ gmake[3]: *** [Makefile:625: gpgscm-scheme.o] Error 1 gmake[3]: *** Waiting for unfinished jobs.... mv -f .deps/gpgscm-main.Tpo .deps/gpgscm-main.Po mv -f .deps/gpgscm-ffi.Tpo .deps/gpgscm-ffi.Po gmake[3]: Leaving directory '/home/build/gnupg-2.2.12/tests/gpgscm' gmake[2]: *** [Makefile:544: all-recursive] Error 1 gmake[2]: Leaving directory '/home/build/gnupg-2.2.12/tests' gmake[1]: *** [Makefile:615: all-recursive] Error 1 gmake[1]: Leaving directory '/home/build/gnupg-2.2.12' gmake: *** [Makefile:535: all] Error 2