Hi We are using the BIND libraries into our product internally. I can successfully build the product on Windows, Solaris 10, but I have problems on Linux RedHat. The problem linking on Linux is that linker doesn't find certain methods. The methods are compiled and are available in a static library.
What I've already done: 1. I checked the library and I see the methods in there (using objdump) 2. I ensured that the library I am looking to is the one considered by the linker (I renamed the library and the linker complained can't find it anymore) Different outputs following: i. the linker output g++ -o <our executable> -g -g -Wall -Wformat -march=i586 -mtune=i586 -Dlinux -D__i386 -D_POSIX_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE -DX_LOCALE -L/export/raduda/bind-9.4.2-P2/linux/lib -L. -L../../lib/util -L../../lib/nidsnmp -L../../lib/BINDlibs/libuc_new -L../../lib/BINDlibs/libjr -L../../thirdparty/openssl-0.9.8e/linux/lib -L../../lib/BINDlibs/libcc -L../../lib/BINDlibs/libzsign -L../../lib/BINDlibs/libcheck -L../../thirdparty/Xerces2.7/linux/lib -L/usr/lib <our compiled objects> -Wl,-a,shared -lpthread -lc -Wl,-a,archive -lupdc -lnidsnmp -ljr -lnbccc -lzsign -lcheck -lutil -lisccfg -lbind9 -ldns -lisccc -lisc -lcrypto -Wl,-a,shared -lxerces-c -Wl,-rpath,/usr/lib ../../lib/util/libutil.a(netid_file.o)(.text+0xb33): In function `netid_create_temporary_file': : warning: the use of `mktemp' is dangerous, better use `mkstemp' /export/raduda/bind-9.4.2-P2/linux/lib/libbind9.a(check.o)(.text+0x915): In function `checkacl': /export/raduda/bind-9.4.2-P2-no-openssl/lib/bind9/check.c:382: undefined reference to `cfg_acl_fromconfig' /export/raduda/bind-9.4.2-P2/linux/lib/libbind9.a(check.o)(.text+0x1e44): In function `check_viewconf': /export/raduda/bind-9.4.2-P2-no-openssl/lib/bind9/check.c:1417: undefined reference to `cfg_aclconfctx_init' /export/raduda/bind-9.4.2-P2/linux/lib/libbind9.a(check.o)(.text+0x269a):/export/raduda/bind-9.4.2-P2-no-openssl/lib/bind9/check.c:1550: undefined reference to `cfg_aclconfctx_destroy' /export/raduda/bind-9.4.2-P2/linux/lib/libbind9.a(check.o)(.text+0x38a0): In function `bind9_check_namedconf': /export/raduda/bind-9.4.2-P2-no-openssl/lib/bind9/check.c:1746: undefined reference to `cfg_aclconfctx_init' /export/raduda/bind-9.4.2-P2/linux/lib/libbind9.a(check.o)(.text+0x39a1):/export/raduda/bind-9.4.2-P2-no-openssl/lib/bind9/check.c:1765: undefined reference to `cfg_acl_fromconfig' /export/raduda/bind-9.4.2-P2/linux/lib/libbind9.a(check.o)(.text+0x3e4e):/export/raduda/bind-9.4.2-P2-no-openssl/lib/bind9/check.c:1813: undefined reference to `cfg_aclconfctx_destroy' collect2: ld returned 1 exit status make: *** [nidnbcd] Error 1 ii. [raduda_4.6.0_linux_dyn] 0:20 dellux(raduda) /export/raduda> objdump -t bind-9.4.2-P2/linux/lib/libisccfg.a In archive bind-9.4.2-P2/linux/lib/libisccfg.a: aclconf.o: file format elf32-i386 SYMBOL TABLE: 00000000 l df *ABS* 00000000 aclconf.c 00000000 l d .text 00000000 00000000 l d .data 00000000 00000000 l d .bss 00000000 00000000 l d .debug_abbrev 00000000 00000000 l d .debug_info 00000000 00000000 l d .debug_line 00000000 00000000 l d .rodata.str1.4 00000000 00000000 l d .rodata.str1.1 00000000 00000000 l d .debug_frame 00000000 00000000 l d .debug_loc 00000000 00000000 l d .debug_pubnames 00000000 00000000 l d .debug_aranges 00000000 00000000 l d .debug_ranges 00000000 00000000 l d .debug_str 00000000 00000000 l d .note.GNU-stack 00000000 00000000 l d .comment 00000000 00000000 g F .text 00000015 cfg_aclconfctx_init 00000018 g F .text 00000037 cfg_aclconfctx_destroy 00000000 *UND* 00000000 dns_acl_detach 00000050 g F .text 00000784 cfg_acl_fromconfig and following I modified your code and moved entire content of aclconf.c into parser.c. Built the libisccfg.a again and tried linking again: it worked right away! Now libbind9.a doesn't complain! I am aware that maybe isn't BIND related issue, still, do you have any idea WHY it happens like this? And secondly, is my solution safe? Thx, Radu p.s. yes, it is BIND-9.4.2-P2
