root@solaris11:~/.cpan/build/GD-2.46-5lwh43# perl Makefile.PL
Notice: Type perl Makefile.PL -h for command-line option summary.

Configuring for libgd version 2.0.35.
Checking for stray libgd header files...cc: Warning: Option -nt-search-dirs passed to ld, if ld is invoked, ignored otherwise
usage: cc [ options ] files.  Use 'cc -flags' for details
none found.

Included Features:          GD_XPM GD_JPEG GD_FONTCONFIG GD_FREETYPE GD_PNG GD_GIF GD_GIFANIM GD_OPENPOLYGON GD_UNCLOSEDPOLY GD_ANIMGIF GD_FTCIRCLE VERSION_33
GD library used from:       /usr
Note (probably harmless): No library found for -liconv
Writing Makefile for GD
Writing MYMETA.yml and MYMETA.json

root@solaris11:~/.cpan/build/GD-2.46-5lwh43# make
/usr/bin/perl GD/Image.pm.PLS GD/Image.pm
Extracting Image.pm (with variable substitutions)
Skip blib/lib/GD/Polyline.pm (unchanged)
Skip blib/lib/qd.pl (unchanged)
Skip blib/lib/GD/Image.pm (unchanged)
Skip blib/lib/GD.pm (unchanged)
Skip blib/lib/GD/Simple.pm (unchanged)
Skip blib/lib/GD/Polygon.pm (unchanged)
Skip blib/lib/GD/Group.pm (unchanged)
cc -c  -I/usr/include/gd2  -Wformat=0 -xO4    -DVERSION=\"2.46\"  -DXS_VERSION=\"2.46\" -KPIC "-I/usr/perl5/5.12/lib/i86pc-solaris-64int/CORE"  -DHAVE_JPEG -DHAVE_FT -DHAVE_XPM -DHAVE_GIF -DHAVE_PNG -DHAVE_ANIMGIF -DVERSION_33 -DHAVE_UNCLOSEDPOLY -DHAVE_FONTCONFIG -DHAVE_FTCIRCLE GD.c
cc: -W option with unknown program format=0
*** Error code 1
make: Fatal error: Command failed for target `GD.o'