Unable to build zpipe.c (Zlib sample program) - c

Question

I'm trying to build zpipe.c. I've installed zlib 1.2.5 via configure; make; make install.
I've moved my zpipe.c file into the actual zlib-1.2.5 directory where it includes the zlib.h header file.
This is what I get when I attempt to build:
[sk#lldma zlib-1.2.5]$ gcc zpipe.c
/tmp/ccZ2OBz0.o: In function `def':
zpipe.c:(.text+0x3c): undefined reference to `deflateInit_'
zpipe.c:(.text+0x8f): undefined reference to `deflateEnd'
zpipe.c:(.text+0xe2): undefined reference to `deflate'
zpipe.c:(.text+0x163): undefined reference to `deflateEnd'
zpipe.c:(.text+0x1df): undefined reference to `deflateEnd'
/tmp/ccZ2OBz0.o: In function `inf':
zpipe.c:(.text+0x22d): undefined reference to `inflateInit_'
zpipe.c:(.text+0x280): undefined reference to `inflateEnd'
zpipe.c:(.text+0x2c1): undefined reference to `inflate'
zpipe.c:(.text+0x312): undefined reference to `inflateEnd'
zpipe.c:(.text+0x36e): undefined reference to `inflateEnd'
zpipe.c:(.text+0x398): undefined reference to `inflateEnd'
The README doens't say anything specific about building on Linux and I see that deflate.h and the other .h files are all located in the directory...
The source to zpipe.c is here: http://www.zlib.net/zpipe.c
Any ideas? TIA
[sk#lldma zlib-1.2.5]$ ls
adler32.c example64 infback.c Makefile.in watcom
adler32.lo example64.o infback.lo make_vms.com win32
adler32.o example.c infback.o minigzip zconf.h
amiga example.o inffast.c minigzip64 zconf.h.cmakein
ChangeLog examples inffast.h minigzip64.o zconf.h.in
CMakeLists.txt examplesh inffast.lo minigzip.c zlib2ansi
compress.c FAQ inffast.o minigzip.o zlib.3
compress.lo gzclose.c inffixed.h minigzipsh zlib.3.pdf
compress.o gzclose.lo inflate.c msdos zlib.h
configure gzclose.o inflate.h nintendods zlib.map
contrib gzguts.h inflate.lo old zlib.pc
crc32.c gzlib.c inflate.o qnx zlib.pc.in
crc32.h gzlib.lo inftrees.c README zpipe.c
crc32.lo gzlib.o inftrees.h treebuild.xml zutil.c
crc32.o gzread.c inftrees.lo trees.c zutil.h
deflate.c gzread.lo inftrees.o trees.h zutil.lo
deflate.h gzread.o libz.a trees.lo zutil.o
deflate.lo gzwrite.c libz.so trees.o
deflate.o gzwrite.lo libz.so.1 uncompr.c
doc gzwrite.o libz.so.1.2.5 uncompr.lo
example INDEX Makefile uncompr.o

Answer 1

The problem is not in the headers, it compiles fine. The problem is that the linker can't find the library functions. Try compiling with this:
gcc zpipe.c -lz
This will compile with libz.a or libz.so (depending on whether you are static or dynamically compiling), and if correct these object files should contain the missing functions.