GD Won't Complie Against libpng 1.4.0

From the libpng README.

"Removed the deprecated png_check_sig() function/macro."

The file ext/gd/libgd/gd_png.c currently uses this function and so will not compile against libpng 1.4.0. The libpng man page notes the following:

"The function png_check_sig(sig, num) was replaced with !png_sig_cmp(sig, 0, num). It has been deprecated since libpng-0.90."

Hehe

GDAL Info

Untuk menampilkan informasi format-format apa yang didukung oleh library GDAL, dapat melalu cara berikut ini.
$ /usr/bin/gdalinfo --formats
Supported Formats:
 VRT (rw+): Virtual Raster
 GTiff (rw+): GeoTIFF
 NITF (rw+): National Imagery Transmission Format
 RPFTOC (ro): Raster Product Format TOC format
 HFA (rw+): Erdas Imagine Images (.img)
 SAR_CEOS (ro): CEOS SAR Image
 CEOS (ro): CEOS Image
 JAXAPALSAR (ro): JAXA PALSAR Product Reader (Level 1.1/1.5)
 GFF (ro): Ground-based SAR Applications Testbed File Format (.gff)
 ELAS (rw+): ELAS
 AIG (ro): Arc/Info Binary Grid
 AAIGrid (rw): Arc/Info ASCII Grid
 SDTS (ro): SDTS Raster
 DTED (rw): DTED Elevation Raster
 PNG (rw): Portable Network Graphics
 JPEG (rw): JPEG JFIF
 MEM (rw+): In Memory Raster
 JDEM (ro): Japanese DEM (.mem)
 GIF (rw): Graphics Interchange Format (.gif)
 ESAT (ro): Envisat Image Format
 BSB (ro): Maptech BSB Nautical Charts
 XPM (rw): X11 PixMap Format
 BMP (rw+): MS Windows Device Independent Bitmap
 DIMAP (ro): SPOT DIMAP
 AirSAR (ro): AirSAR Polarimetric Image
 RS2 (ro): RadarSat 2 XML Product
 PCIDSK (rw+): PCIDSK Database File
 PCRaster (rw): PCRaster Raster File
 ILWIS (rw+): ILWIS Raster Map
 SGI (ro): SGI Image File Format 1.0
 SRTMHGT (rw): SRTMHGT File Format
 Leveller (rw+): Leveller heightfield
 Terragen (rw+): Terragen heightfield
 PNM (rw+): Portable Pixmap Format (netpbm)
 DOQ1 (ro): USGS DOQ (Old Style)
 DOQ2 (ro): USGS DOQ (New Style)
 ENVI (rw+): ENVI .hdr Labelled
 EHdr (rw+): ESRI .hdr Labelled
 GenBin (ro): Generic Binary (.hdr Labelled)
 PAux (rw+): PCI .aux Labelled
 MFF (rw+): Vexcel MFF Raster
 MFF2 (rw+): Vexcel MFF2 (HKV) Raster
 FujiBAS (ro): Fuji BAS Scanner Image
 GSC (ro): GSC Geogrid
 FAST (ro): EOSAT FAST Format
 BT (rw+): VTP .bt (Binary Terrain) 1.3 Format
 LAN (ro): Erdas .LAN/.GIS
 CPG (ro): Convair PolGASP
 IDA (rw+): Image Data and Analysis
 NDF (ro): NLAPS Data Format
 DIPEx (ro): DIPEx
 ISIS3 (ro): USGS Astrogeology ISIS cube (Version 3)
 ISIS2 (ro): USGS Astrogeology ISIS cube (Version 2)
 PDS (ro): NASA Planetary Data System
 ERS (rw+): ERMapper .ers Labelled
 L1B (ro): NOAA Polar Orbiter Level 1b Data Set
 FIT (rw): FIT Image
 RMF (rw+): Raster Matrix Format
 WCS (ro): OGC Web Coverage Service
 WMS (ro): OGC Web Map Service
 RST (rw+): Idrisi Raster A.1
 INGR (rw+): Intergraph Raster
 GSAG (rw): Golden Software ASCII Grid (.grd)
 GSBG (rw+): Golden Software Binary Grid (.grd)
 GS7BG (ro): Golden Software 7 Binary Grid (.grd)
 COSAR (ro): COSAR Annotated Binary Matrix (TerraSAR-X)
 TSX (ro): TerraSAR-X Product
 COASP (ro): DRDC COASP SAR Processor Raster
 RIK (ro): Swedish Grid RIK (.rik)
 USGSDEM (rw): USGS Optional ASCII DEM (and CDED)
 GXF (ro): GeoSoft Grid Exchange Format
 HTTP (ro): HTTP Fetching Wrapper
ADRG (rw+): ARC Digitized Raster Graphics

Hehe