There have been a couple postings recently regarding relocation warnings that have been observed when using the link-editors -z verbose option. The first...
There have been a couple postings recently regarding relocation warnings that have been observed when using the link-editors -z verbose option. The first warning originates from building a shared object: ld: warning: relocation warning: R_SPARC_DISP32: file shared.o: \ symbol <unknown>: displacement relocation applied to the \ symbol __RTTI__1nEBase_: at 0x8: displacement relocation will \ not be visible in output image Then, if this shared object is referenced as a...
There have been a couple postings recently regarding relocation warnings that have been observed when using the link-editors -z verbose option. The first warning originates from building a...
After reading a previous posting on versioning, a developer asked how they could specify what version to bind to when they built their application. For example,...
After reading a previous posting on versioning, a developer asked how they could specify what version to bind to when they built their application. For example, from the version definitions within libelf.so.1: % pvs -d /lib/libelf.so.1 libelf.so.1; SUNW_1.5; SUNW_1.4; .... SUNWprivate_1.1; how could you restrict an application to only use the interfaces defined by SUNW_1.4. Note, version SUNW_1.4 inherits previous versions. The Linker and Libraries Guide covers this topic in...
After reading a previous posting on versioning, a developer asked how they could specify what version to bind to when they built their application. For example, from the version definitions...
A developer who wished to add /usr/sfw/lib to their default runtime search path, managed to turn their system into a brick by using crle(1): # crle -l...
A developer who wished to add /usr/sfw/lib to their default runtime search path, managed to turn their system into a brick by using crle(1): # crle -l /usr/sfw/lib # ls ld.so.1: ls: fatal: libsec.so.1: open failed: No such file or directory Killed The problem was that crle(1), in this basic form, created a system wide configuration file. This configuration file defined that the default runtime search path for shared object dependencies is /usr/sfw/lib. This search path...
A developer who wished to add /usr/sfw/lib to their default runtime search path, managed to turn their system into a brick by using crle(1): # crle -l /usr/sfw/lib # ls ld.so.1: ls:...
Solaris CAT is a crash analysis tool (C.A.T, get it?) that a small team of dedicated engineers in Sun's Support Services kernel team have been developing over...
Solaris CAT is a crash analysis tool (C.A.T, get it?) that a small team of dedicated engineers in Sun's Support Services kernel team have been developing over the past 10 years. It's been available internally for ages, and with the 4.0 release we got the go-ahead to provide it to you, our customers, via SDLC.We've also got version 4.1 on SDLC but that doesn't support Solaris 10.We've had a few hiccups along the path to getting 4.2 out for you and we also branched to start a...
Solaris CAT is a crash analysis tool (C.A.T, get it?) that a small team of dedicated engineers in Sun's Support Services kernel team have been developing over the past 10 years. It's been...
The term cookies in computerspeak refers to a "token" of information passed among software. It was first used with the UNIX® Portable C Compiler (PCC). Later,...
The term cookies in computerspeak refers to a "token" of information passed among software. It was first used with the UNIX® Portable C Compiler (PCC). Later, the term was used for video terminal software and web browsers.Anyway, here's the story of the origin of cookies from Steve Johnson, author of PCC atBell Labs:From uucp Tue Nov 20 00:19 EST 1984 remote from hcrFrom research!grigg!scj Mon Nov 19 18:18:22 1984 remote from decvaxReturn-Path: Received: by decvax.UUCP...
The term cookies in computerspeak refers to a "token" of information passed among software. It was first used with the UNIX® Portable C Compiler (PCC). Later, the term was used for video terminal...
Every now and then, someone encounters the following error. % cc -G -o foo.so foo.o -lbar ld: fatal: file foo.o: wrong ELF class: ELFCLASS64 ld: fatal: File...
Every now and then, someone encounters the following error. % cc -G -o foo.so foo.o -lbar ld: fatal: file foo.o: wrong ELF class: ELFCLASS64 ld: fatal: File processing errors. No output written to foo Or perhaps the similar error. % cc -G -xarch=amd64 -o foo.so foo.o -lbar ld: fatal: file foo.o: wrong ELF class: ELFCLASS32 ld: fatal: File processing errors. No output written to foo This issue stems from the compiler flags that have been used to compile the relocatable object...
Every now and then, someone encounters the following error. % cc -G -o foo.so foo.o -lbar ld: fatal: file foo.o: wrong ELF class: ELFCLASS64 ld: fatal: File processing errors. No output written to foo...
Before: Hotel San Diego, Northeast corner, May 2002Yesterday, the historic Hotel San Diego was demolished. The seven-story hotel lived on 339 W. Broadway in...
Before: Hotel San Diego, Northeast corner, May 2002Yesterday, the historic Hotel San Diego was demolished. The seven-story hotel lived on 339 W. Broadway in downtown San Diego, California. The hotel was built in 1914 by John D. Spreckels, who made his riches from Spreckels Sugar and shipping. Spreckels moved out of San Francisco after the 1906 San Francisco earthquake (100 years ago today) to someplace safer and nicer.The hotel was built by architect Harrison Albright and is...
Before: Hotel San Diego, Northeast corner, May 2002Yesterday, the historic Hotel San Diego was demolished. The seven-story hotel lived on 339 W. Broadway in downtown San Diego, California. The hotel...
Recently, a customers use of C++ objects within a dlopen(3c) environment revealed a problem that took some time to evaluate and understand. Sadly, this seems to...
Recently, a customers use of C++ objects within a dlopen(3c) environment revealed a problem that took some time to evaluate and understand. Sadly, this seems to be a recurring issue where the expectations of the C++ implementation are compromised by dynamic linking capabilities. Of course, dynamic linking is the norm for Solaris, and C++ is commonly employed in dynamic linking environments. But there are subtleties in regards symbol visibility that can cause problems. This...
Recently, a customers use of C++ objects within a dlopen(3c) environment revealed a problem that took some time to evaluate and understand. Sadly, this seems to be a recurring issue where...
I recently came across a mail exchange where the following runtime linker error message was observed: illegal mode: potential multiple path expansion requires...
I recently came across a mail exchange where the following runtime linker error message was observed: illegal mode: potential multiple path expansion requires RTLD_FIRST The exchange, and a quick review of the documents, reveal that some explanation wouldn't go amiss. The runtime linker, ld.so.1, provides a number of tokens that can be used within dynamic linking string definitions. These string definitions can provide filters, dependencies and runpath information, and are...
I recently came across a mail exchange where the following runtime linker error message was observed: illegal mode: potential multiple path expansion requires RTLD_FIRST The exchange, and a quick...
