Public bug reported:

So crypt(3) from the binary package manpages-dev tells me I should have
crypt(), usable with -lcrypt.

As I sometimes needs to compute such a crappy hash (I can't even
remember when the last time was, or why, but that had to do with legacy
code), I wrote this small utility:

https://github.com/pcarrier/stuff/commit/f3de13682f28354397dc1b7caef5c1dd13fdfc36

It compiles completely fine under Squeeze using "gcc -lcrypt crypt.c".

For some reason I'm not so lucky with precise.

% gcc -lcrypt crypt.c
/tmp/cczm5dUv.o: In function `main':
crypt.c:(.text+0x36): undefined reference to `crypt'
crypt.c:(.text+0x5d): undefined reference to `crypt'
collect2: ld returned 1 exit status
zsh: exit 1     gcc -lcrypt crypt.c

% readelf -Ws /lib/x86_64-linux-gnu/libcrypt-2.15.so|grep crypt@
    19: 0000000000004f40    12 FUNC    GLOBAL DEFAULT   13 encrypt@@GLIBC_2.2.5
    22: 0000000000000ca0   131 FUNC    GLOBAL DEFAULT   13 crypt@@GLIBC_2.2.5
    24: 0000000000000ca0   131 FUNC    WEAK   DEFAULT   13 fcrypt@@GLIBC_2.2.5

% dpkg -l|grep -E 'gcc|libc6'
ii  gcc                                    4:4.6.3-1ubuntu5                     
        GNU C compiler
ii  gcc-4.6                                4.6.3-1ubuntu5                       
        GNU C compiler
ii  gcc-4.6-base                           4.6.3-1ubuntu5                       
        GCC, the GNU Compiler Collection (base package)
ii  gcc-4.6-base:i386                      4.6.3-1ubuntu5                       
        GCC, the GNU Compiler Collection (base package)
ii  libc6                                  2.15-0ubuntu10                       
        Embedded GNU C Library: Shared libraries
ii  libc6:i386                             2.15-0ubuntu10                       
        Embedded GNU C Library: Shared libraries
ii  libc6-dev                              2.15-0ubuntu10                       
        Embedded GNU C Library: Development Libraries and Header Files
ii  libc6-i386                             2.15-0ubuntu10                       
        Embedded GNU C Library: 32-bit shared libraries for AMD64
ii  libgcc1                                1:4.6.3-1ubuntu5                     
        GCC support library
ii  libgcc1:i386                           1:4.6.3-1ubuntu5                     
        GCC support library

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: manpages-dev 3.35-0.1ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
Date: Mon Aug 13 01:26:30 2012
Dependencies: manpages 3.35-0.1ubuntu1
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 
(20120731)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/zsh
SourcePackage: manpages
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: manpages (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise running-unity

** Summary changed:

- libcrypt doesn't give me crypt()?
+ libcrypt and gcc ain't providing crypt() as advertised

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https://bugs.launchpad.net/bugs/1035996

Title:
  libcrypt and gcc ain't providing crypt() as advertised

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