undefined reference to main - compiling on Debian

[nigelhorne]

/bin/bash ../libtool --tag=CC --mode=link gcc -Wall -Wextra -Wno-unused-function -Wformat -Werror=format-security -Winit-self -Wno-sign-compare -DLIBPOSTAL_DATA_DIR='"/usr/local/share/libportal/libpostal"' -g -mfpmath=sse -msse2 -DUSE_SSE -O2 -W -Wformat=2 -Wswitch -Wshadow -Wwrite-strings -Wuninitialized -Wall -pipe -fomit-frame-pointer -pedantic -D_FORTIFY_SOURCE=2 -Wpointer-arith -Wstrict-prototypes -fstack-protector -Wstack-protector -Wextra -Wbad-function-cast -Wcast-align -Wcast-qual -Wdisabled-optimization -Wendif-labels -Wfloat-equal -Wformat-nonliteral -Winline -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wundef -Wformat-security -ftree-vectorize -msse -mfpmath=sse -msse2 -mssse3 -msse4.1 -msse4.2 -maes -fdiagnostics-color=auto -flto -mtune=native -march=native -O3 -L/usr/local/lib -o build_trans_table build_trans_table-strndup.o build_trans_table-transliteration_table_builder.o build_trans_table-transliterate.o build_trans_table-trie.o build_trans_table-trie_search.o build_trans_table-file_utils.o build_trans_table-string_utils.o utf8proc/build_trans_table-utf8proc.o -lm
libtool: link: gcc -Wall -Wextra -Wno-unused-function -Wformat -Werror=format-security -Winit-self -Wno-sign-compare -DLIBPOSTAL_DATA_DIR="/usr/local/share/libportal/libpostal" -g -mfpmath=sse -msse2 -DUSE_SSE -O2 -W -Wformat=2 -Wswitch -Wshadow -Wwrite-strings -Wuninitialized -Wall -pipe -fomit-frame-pointer -pedantic -D_FORTIFY_SOURCE=2 -Wpointer-arith -Wstrict-prototypes -fstack-protector -Wstack-protector -Wextra -Wbad-function-cast -Wcast-align -Wcast-qual -Wdisabled-optimization -Wendif-labels -Wfloat-equal -Wformat-nonliteral -Winline -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wundef -Wformat-security -ftree-vectorize -msse -mfpmath=sse -msse2 -mssse3 -msse4.1 -msse4.2 -maes -fdiagnostics-color=auto -flto -mtune=native -march=native -O3 -o build_trans_table build_trans_table-strndup.o build_trans_table-transliteration_table_builder.o build_trans_table-transliterate.o build_trans_table-trie.o build_trans_table-trie_search.o build_trans_table-file_utils.o build_trans_table-string_utils.o utf8proc/build_trans_table-utf8proc.o -L/usr/local/lib -lm
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function _start': (.text+0x17): undefined reference to main'
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:1088: build_trans_table] Error 1
make[2]: Leaving directory '/home/njh/src/libpostal/src'
make[1]: *** [Makefile:473: all-recursive] Error 1
make[1]: Leaving directory '/home/njh/src/libpostal'
make: *** [Makefile:382: all] Error 2