Databases
StackOverflow2013
Postsdbo
POLinking with libpng & zlib?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POLinking with libpng & zlib?
    primarykey
    data
    text
    <p>I'm trying to compile a project that uses both libjpeg and libpng. I know that libpng needs zlib, so I compiled all the three <em>independently</em> and put them (libjpeg.a, libpng.a and libz.a) on a folder called <code>linrel32</code>. What I execute then is:</p> <p><code>g++ -Llinrel32/ program.cpp otherfile.cpp -o linrel32/executable -Izlib/ -Ilpng140/ -Ijpeg/ -lpthread -lX11 -O2 -DLINUX -s -lz -lpng -ljpeg</code></p> <p>So I include the three libraries. Still, the linker complains:</p> <pre><code>linrel32//libpng.a(png.o): In function `png_calculate_crc': png.c:(.text+0x97d): undefined reference to `crc32' linrel32//libpng.a(png.o): In function `png_reset_crc': png.c:(.text+0x9be): undefined reference to `crc32' linrel32//libpng.a(png.o): In function `png_reset_zstream': png.c:(.text+0x537): undefined reference to `inflateReset' linrel32//libpng.a(pngread.o): In function `png_read_destroy': pngread.c:(.text+0x6f4): undefined reference to `inflateEnd' linrel32//libpng.a(pngread.o): In function `png_read_row': pngread.c:(.text+0x1267): undefined reference to `inflate' linrel32//libpng.a(pngread.o): In function `png_create_read_struct_2': </code></pre> <p>(... you get the idea :D)</p> <pre><code>collect2: ld returned 1 exit status </code></pre> <p>I know the missing functions are from zlib, and I'm adding zlib there. Opened libz.a and it seems to have a good structure. Recompiled it, everything looks fine. But it is not...</p> <p>I don't know, is likely that the problem is trivial, and what I need is to sleep for a while. But still, if you could help me to figure out this thing ...</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. UShuff
    1. UShuff
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POLinking with libpng & zlib?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POLinking with libpng & zlib?
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    3. VO
      singulars
      1. POLinking with libpng & zlib?
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload