$pwd
/Downloads/php-5.3.16/ext/pdo_odbc

$ sudo ./configure --help
`configure' configures this package to adapt to many kinds of systems.

Usage: ./configure [OPTION]... [VAR=VALUE]...

To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE.  See below for descriptions of some of the useful variables.

Defaults for the options are specified in brackets.

Configuration:
  -h, --help              display this help and exit
      --help=short        display options specific to this package
      --help=recursive    display the short help of all the included packages
  -V, --version          display version information and exit
  -q, --quiet, --silent  do not print `checking ...' messages
      --cache-file=FILE  cache test results in FILE [disabled]
  -C, --config-cache      alias for `--cache-file=config.cache'
  -n, --no-create        do not create output files
      --srcdir=DIR        find the sources in DIR [configure dir or `..']

Installation directories:
  --prefix=PREFIX        install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX  install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc.  You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --sbindir=DIR          system admin executables [EPREFIX/sbin]
  --libexecdir=DIR        program executables [EPREFIX/libexec]
  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --includedir=DIR        C header files [PREFIX/include]
  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
  --datarootdir=DIR      read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR          read-only architecture-independent data [DATAROOTDIR]
  --infodir=DIR          info documentation [DATAROOTDIR/info]
  --localedir=DIR        locale-dependent data [DATAROOTDIR/locale]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root [DATAROOTDIR/doc/PACKAGE]
  --htmldir=DIR          html documentation [DOCDIR]
  --dvidir=DIR            dvi documentation [DOCDIR]
  --pdfdir=DIR            pdf documentation [DOCDIR]
  --psdir=DIR            ps documentation [DOCDIR]

System types:
  --build=BUILD    configure for building on BUILD [guessed]
  --host=HOST      cross-compile to build programs to run on HOST [BUILD]
  --target=TARGET  configure for building compilers for TARGET [HOST]

Optional Features:
  --disable-option-checking  ignore unrecognized --enable/--with options
  --disable-FEATURE      do not include FEATURE (same as --enable-FEATURE=no)
  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  --enable-shared=PKGS  build shared libraries default=yes
  --enable-static=PKGS  build static libraries default=yes
  --enable-fast-install=PKGS  optimize for fast installation default=yes
  --disable-libtool-lock  avoid locking (might break parallel builds)

Optional Packages:
  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
  --without-PACKAGE      do not use PACKAGE (same as --with-PACKAGE=no)
  --with-libdir=NAME      Look for libraries in .../NAME rather than .../lib
  --with-php-config=PATH  Path to php-config php-config
  --with-pdo-odbc=flavour,dir
                            PDO: Support for 'flavour' ODBC driver.
                            include and lib dirs are looked for under 'dir'.

                            'flavour' can be one of:  ibm-db2, iODBC, unixODBC, generic
                            If ',dir' part is omitted, default for the flavour
                            you have selected will used. e.g.:

                              --with-pdo-odbc=unixODBC

                            will check for unixODBC under /usr/local. You may attempt
                            to use an otherwise unsupported driver using the \"generic\"
                            flavour.  The syntax for generic ODBC support is:

                              --with-pdo-odbc=generic,dir,libname,ldflags,cflags

                            When build as shared the extension filename is always pdo_odbc.so
  --with-gnu-ld          assume the C compiler uses GNU ld default=no
  --with-pic              try to use only PIC/non-PIC objects default=use both
  --with-tags=TAGS      include additional configurations automatic


Some influential environment variables:
  CC          C compiler command
  CFLAGS      C compiler flags
  LDFLAGS    linker flags, e.g. -L<lib dir> if you have libraries in a
              nonstandard directory <lib dir>
  LIBS        libraries to pass to the linker, e.g. -l<library>
  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
              you have headers in a nonstandard directory <include dir>
  CPP        C preprocessor

Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.

Report bugs to the package provider.