mdsh@bedroom:/home/mdsh/src/mergelog-4.5
$ ./configure
creating cache ./config.cache
checking for a BSD compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking whether make sets ${MAKE}... yes
checking for working aclocal... missing
checking for working autoconf... missing
checking for working automake... missing
checking for working autoheader... missing
checking for working makeinfo... found
checking for a BSD compatible install... /usr/bin/install -c
checking for gcc... gcc
checking whether the C compiler (gcc  ) works... yes
checking whether the C compiler (gcc  ) is a cross-compiler... no
checking whether we are using GNU C... yes
checking whether gcc accepts -g... yes
checking for main in -lz... yes
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for unistd.h... yes
checking for size_t... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking for 8-bit clean memcmp... yes
checking for mktime... yes
updating cache ./config.cache
creating ./config.status
creating Makefile
creating src/Makefile
creating man/Makefile
mdsh@bedroom:/home/mdsh/src/mergelog-4.5
$ make
Making all in src
make[1]: Entering directory `/home/mdsh/src/mergelog-4.5/src'
gcc -DHAVE_LIBZ=1 -DSTDC_HEADERS=1 -DHAVE_UNISTD_H=1 -DHAVE_MKTIME=1  -I. -I.      -g -O2 -lz  -DVERSION=\"4.5\" -Wall -DUSE_ZLIB mergelog.c -o zmergelog
/cygdrive/c/DOCUME~1/mdsh/LOCALS~1/Temp/ccbBCPt8.o(.text+0x8a): In function `fast_gzgets':
/home/mdsh/src/mergelog-4.5/src/mergelog.c:77: undefined reference to `_gzread'
/cygdrive/c/DOCUME~1/mdsh/LOCALS~1/Temp/ccbBCPt8.o(.text+0x6a6): In function `main':
/home/mdsh/src/mergelog-4.5/src/mergelog.c:393: undefined reference to `_gzclose'
/cygdrive/c/DOCUME~1/mdsh/LOCALS~1/Temp/ccbBCPt8.o(.text+0xc22):/home/mdsh/src/mergelog-4.5/src/mergelog.c:139: undefined reference to `_gzopen'
collect2: ld returned 1 exit status
make[1]: *** [zmergelog] Error 1
make[1]: Leaving directory `/home/mdsh/src/mergelog-4.5/src'
make: *** [all-recursive] Error 1