linux-bvhg:~/> nm -l -C libwxOil.a | grep gtk_widget_get_pango_context
U gtk_widget_get_pango_context(_GtkWidget*) /home/myname/src/XaraLX/wxOil/ftfonts.cpp:868
Thursday, October 28, 2010
To find function declaration in static library
The following command finds a reference to function "gtk_widget_get_pango_context" in static library libwxOil.a:
GLIB and wxWidget Class conflict
When compiling XaraLX, there is a conflict between GLIB-2.0 and wxWidget 2.8 as shown below:
The quick solution is to modify <XaraLX directory>/wxOil/ftfonts.cpp. Edit this file and change from:
to:
/usr/local/include/glib-2.0/gio/giotypes.h:127:47: error: conflicting declaration `typedef struct _GSocket GSocket' /usr/include/wx-2.8/wx/unix/gsockunx.h:41:1: error: `class GSocket' has a previous declaration as `class GSocket'
The quick solution is to modify <XaraLX directory>/wxOil/ftfonts.cpp. Edit this file and change from:
#ifdef __WXGTK20__ #include <gtk/gtk.h> extern GtkWidget *wxGetRootWindow(); #endif
to:
#ifdef __WXGTK20__ //#include <gtk/gtk.h> extern PangoContext *gtk_widget_get_pango_context (GtkWidget *widget); extern GtkWidget *wxGetRootWindow(); #endif
Thursday, October 14, 2010
To find dependency in Linux dynamic object file/library
linux-bvhg:~> objdump -x `which ffmpeg` /usr/local/bin/ffmpeg: file format elf64-x86-64 /usr/local/bin/ffmpeg architecture: i386:x86-64, flags 0x00000112: EXEC_P, HAS_SYMS, D_PAGED start address 0x0000000000405360 Program Header: PHDR off 0x0000000000000040 vaddr 0x0000000000400040 paddr 0x0000000000400040 align 2**3 filesz 0x00000000000001f8 memsz 0x00000000000001f8 flags r-x INTERP off 0x0000000000000238 vaddr 0x0000000000400238 paddr 0x0000000000400238 align 2**0 filesz 0x000000000000001c memsz 0x000000000000001c flags r-- LOAD off 0x0000000000000000 vaddr 0x0000000000400000 paddr 0x0000000000400000 align 2**21 filesz 0x0000000000017124 memsz 0x0000000000017124 flags r-x LOAD off 0x00000000000179c8 vaddr 0x00000000006179c8 paddr 0x00000000006179c8 align 2**21 filesz 0x0000000000001e18 memsz 0x00000000000038a0 flags rw- DYNAMIC off 0x0000000000018d10 vaddr 0x0000000000618d10 paddr 0x0000000000618d10 align 2**3 filesz 0x0000000000000240 memsz 0x0000000000000240 flags rw- NOTE off 0x0000000000000254 vaddr 0x0000000000400254 paddr 0x0000000000400254 align 2**2 filesz 0x000000000000005c memsz 0x000000000000005c flags r-- EH_FRAME off 0x0000000000015db0 vaddr 0x0000000000415db0 paddr 0x0000000000415db0 align 2**2 filesz 0x0000000000000304 memsz 0x0000000000000304 flags r-- STACK off 0x0000000000000000 vaddr 0x0000000000000000 paddr 0x0000000000000000 align 2**3 filesz 0x0000000000000000 memsz 0x0000000000000000 flags rw- RELRO off 0x00000000000179c8 vaddr 0x00000000006179c8 paddr 0x00000000006179c8 align 2**0 filesz 0x0000000000001638 memsz 0x0000000000001638 flags r-- Dynamic Section: NEEDED libavdevice.so.52 NEEDED libavfilter.so.1 NEEDED libavformat.so.52 NEEDED libavcodec.so.52 NEEDED libpostproc.so.51 NEEDED libswscale.so.0 NEEDED libavcore.so.0 NEEDED libavutil.so.50 NEEDED libpthread.so.0 NEEDED libm.so.6 NEEDED libc.so.6 INIT 0x0000000000404670 FINI 0x00000000004124e8 HASH 0x00000000004002b0 GNU_HASH 0x0000000000400960 STRTAB 0x0000000000401f48 SYMTAB 0x00000000004009d0 STRSZ 0x0000000000000f0d SYMENT 0x0000000000000018 DEBUG 0x0000000000000000 PLTGOT 0x0000000000618fe8 PLTRELSZ 0x0000000000001320 PLTREL 0x0000000000000007 JMPREL 0x0000000000403350 RELA 0x00000000004031a0 RELASZ 0x00000000000001b0 RELAENT 0x0000000000000018 VERNEED 0x0000000000403020 VERNEEDNUM 0x000000000000000b VERSYM 0x0000000000402e56 Version References: required from libpostproc.so.51: 0x0826df11 0x00 14 LIBPOSTPROC_51 required from libavcore.so.0: 0x0a34bd40 0x00 12 LIBAVCORE_0 required from libm.so.6: 0x09691a75 0x00 11 GLIBC_2.2.5 required from libavfilter.so.1: 0x0ececed1 0x00 10 LIBAVFILTER_1 required from libavdevice.so.52: 0x07b11f22 0x00 09 LIBAVDEVICE_52 required from libavcodec.so.52: 0x035ff8b2 0x00 08 LIBAVCODEC_52 required from libavutil.so.50: 0x0f818430 0x00 07 LIBAVUTIL_50 required from libswscale.so.0: 0x027973e0 0x00 05 LIBSWSCALE_0 required from libavformat.so.52: 0x0c7032c2 0x00 04 LIBAVFORMAT_52 required from libpthread.so.0: 0x09691a75 0x00 03 GLIBC_2.2.5 required from libc.so.6: 0x0d696917 0x00 13 GLIBC_2.7 0x0d696913 0x00 06 GLIBC_2.3 0x09691a75 0x00 02 GLIBC_2.2.5 Sections: Idx Name Size VMA LMA File off Algn 0 .interp 0000001c 0000000000400238 0000000000400238 00000238 2**0 CONTENTS, ALLOC, LOAD, READONLY, DATA 1 .note.ABI-tag 00000020 0000000000400254 0000000000400254 00000254 2**2 CONTENTS, ALLOC, LOAD, READONLY, DATA 2 .note.SuSE 00000018 0000000000400274 0000000000400274 00000274 2**2 CONTENTS, ALLOC, LOAD, READONLY, DATA 3 .note.gnu.build-id 00000024 000000000040028c 000000000040028c 0000028c 2**2 CONTENTS, ALLOC, LOAD, READONLY, DATA 4 .hash 000006b0 00000000004002b0 00000000004002b0 000002b0 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 5 .gnu.hash 0000006c 0000000000400960 0000000000400960 00000960 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 6 .dynsym 00001578 00000000004009d0 00000000004009d0 000009d0 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 7 .dynstr 00000f0d 0000000000401f48 0000000000401f48 00001f48 2**0 CONTENTS, ALLOC, LOAD, READONLY, DATA 8 .gnu.version 000001ca 0000000000402e56 0000000000402e56 00002e56 2**1 CONTENTS, ALLOC, LOAD, READONLY, DATA 9 .gnu.version_r 00000180 0000000000403020 0000000000403020 00003020 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 10 .rela.dyn 000001b0 00000000004031a0 00000000004031a0 000031a0 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 11 .rela.plt 00001320 0000000000403350 0000000000403350 00003350 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 12 .init 00000018 0000000000404670 0000000000404670 00004670 2**2 CONTENTS, ALLOC, LOAD, READONLY, CODE 13 .plt 00000cd0 0000000000404688 0000000000404688 00004688 2**2 CONTENTS, ALLOC, LOAD, READONLY, CODE 14 .text 0000d188 0000000000405360 0000000000405360 00005360 2**4 CONTENTS, ALLOC, LOAD, READONLY, CODE 15 .fini 0000000e 00000000004124e8 00000000004124e8 000124e8 2**2 CONTENTS, ALLOC, LOAD, READONLY, CODE 16 .rodata 000038b0 0000000000412500 0000000000412500 00012500 2**4 CONTENTS, ALLOC, LOAD, READONLY, DATA 17 .eh_frame_hdr 00000304 0000000000415db0 0000000000415db0 00015db0 2**2 CONTENTS, ALLOC, LOAD, READONLY, DATA 18 .eh_frame 0000106c 00000000004160b8 00000000004160b8 000160b8 2**3 CONTENTS, ALLOC, LOAD, READONLY, DATA 19 .ctors 00000010 00000000006179c8 00000000006179c8 000179c8 2**3 CONTENTS, ALLOC, LOAD, DATA 20 .dtors 00000010 00000000006179d8 00000000006179d8 000179d8 2**3 CONTENTS, ALLOC, LOAD, DATA 21 .jcr 00000008 00000000006179e8 00000000006179e8 000179e8 2**3 CONTENTS, ALLOC, LOAD, DATA 22 .data.rel.ro 00001310 0000000000617a00 0000000000617a00 00017a00 2**5 CONTENTS, ALLOC, LOAD, DATA 23 .dynamic 00000240 0000000000618d10 0000000000618d10 00018d10 2**3 CONTENTS, ALLOC, LOAD, DATA 24 .got 00000098 0000000000618f50 0000000000618f50 00018f50 2**3 CONTENTS, ALLOC, LOAD, DATA 25 .got.plt 00000678 0000000000618fe8 0000000000618fe8 00018fe8 2**3 CONTENTS, ALLOC, LOAD, DATA 26 .data 00000180 0000000000619660 0000000000619660 00019660 2**5 CONTENTS, ALLOC, LOAD, DATA 27 .bss 00001a88 00000000006197e0 00000000006197e0 000197e0 2**5 ALLOC 28 .comment.SUSE.OPTs 00000006 0000000000000000 0000000000000000 000197e0 2**0 CONTENTS, READONLY 29 .comment 00000042 0000000000000000 0000000000000000 000197e6 2**0 CONTENTS, READONLY SYMBOL TABLE: no symbols
Tuesday, October 12, 2010
To test Prime Number
#include <stdio.h>
typedef enum {
FALSE = 0,
TRUE = 1
} BOOL;
char *boolstr[] = {"FALSE", "TRUE"};
BOOL is_even(unsigned int k)
{
if (k % 2) return FALSE;
return TRUE;
}
BOOL is_prime(unsigned long k, unsigned long *divisor)
{
unsigned long testnum,testlimit;
BOOL ret = FALSE;
if (k == 1) return FALSE; // 1 is neigher prime neither composite
if (k == 2) return TRUE;
if (is_even(k)) return FALSE; // even numbers are never prime, except 2
testlimit = k;
testnum = 3;
while (testnum < testlimit) {
//printf("highest prime divisor=%lu\n",*divisor);
if ( (k % testnum) == 0)
{
*divisor = testnum;
printf("div=%lu\n", *divisor);
return FALSE; //return TRUE;
// k is not prime as it is divisable by l
}
testlimit = k/testnum;
testnum += 2;
}
return TRUE;
}
int main()
{
unsigned long k,divisor;
divisor=1;
printf("Enter an integer: ");
scanf("%lu", &k);
printf("k=%lu is even? %s\n", k, boolstr[is_even(k)]);
if (is_prime(k, &divisor))
{
printf("k=%lu is prime? %s\n", k, boolstr[TRUE]);
}
else
{
printf("%lu is NOT prime\n", k);
//printf("highest prime divisor = %lu\n", divisor);
}
}
Tuesday, October 5, 2010
3D Entertainment
While 3D televisions are more available in the stores, their price is still high and not many people are getting into it. Perhaps because there is still few BD 3Dd movies. But now 3D camcoders are going into the market. We will see if this change how people buy LCD TVs.
Today, when I went to Costco, the 42" 120 Hz LED 3D TV is already below $2000.
Today, when I went to Costco, the 42" 120 Hz LED 3D TV is already below $2000.
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