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- Log ----------------------------------------------------------------- commit 9728de1929812df84749c9fb044f6f584e044199 Author: Waldemar Brodkorb wbx@uclibc-ng.org Date: Sun Feb 8 15:06:11 2015 +0100

Use executables RPATH/RUNPATH when searching for libraries.

Patch by Steve Ellcey sellcey@imgtec.com on uClibc mailinglist.

-----------------------------------------------------------------------

Summary of changes: extra/Configs/Config.in | 9 +++++++++ include/gnu-versions.h | 2 ++ ldso/ldso/dl-elf.c | 12 ++++++++++++ 3 files changed, 23 insertions(+)

diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in index cec06e4..c7a3b2d 100644 --- a/extra/Configs/Config.in +++ b/extra/Configs/Config.in @@ -420,6 +420,15 @@ config LDSO_RUNPATH Usage of RUNPATH tags is not too common, so disabling this feature should be safe for most people.

+config LDSO_RUNPATH_OF_EXECUTABLE + bool "Use executables RPATH/RUNPATH when searching for libraries." + depends on LDSO_RUNPATH + default n + help + Use the executables RPATH/RUNPATH to find to find libraries even + though this behavour is not standard. Setting this option causes + the uclibc dynamic linker behavour to match the glibc dynamic linker. + config LDSO_SAFE_RUNPATH bool "Allow only RUNPATH beginning with /" depends on LDSO_RUNPATH diff --git a/include/gnu-versions.h b/include/gnu-versions.h index f67764c..9f53778 100644 --- a/include/gnu-versions.h +++ b/include/gnu-versions.h @@ -45,7 +45,9 @@

#define _GNU_OBSTACK_INTERFACE_VERSION 1 /* vs malloc/obstack.c */ #define _GNU_REGEX_INTERFACE_VERSION 1 /* vs posix/regex.c */ +#ifdef __UCLIBC_HAS_GNU_GLOB__ #define _GNU_GLOB_INTERFACE_VERSION 1 /* vs posix/glob.c */ +#endif #define _GNU_GETOPT_INTERFACE_VERSION 2 /* vs posix/getopt.c and posix/getopt1.c */

diff --git a/ldso/ldso/dl-elf.c b/ldso/ldso/dl-elf.c index 6fc95b3..d42b912 100644 --- a/ldso/ldso/dl-elf.c +++ b/ldso/ldso/dl-elf.c @@ -266,6 +266,18 @@ struct elf_resolve *_dl_load_shared_library(unsigned rflags, struct dyn_elf **rp if ((tpnt1 = search_for_named_library(libname, rflags, pnt, rpnt, NULL)) != NULL) return tpnt1; } +#ifdef __LDSO_RUNPATH_OF_EXECUTABLE__ + /* + * Try the DT_RPATH of the executable itself. + */ + pnt = (char *) _dl_loaded_modules->dynamic_info[DT_RPATH]; + if (pnt) { + pnt += (unsigned long) _dl_loaded_modules->dynamic_info[DT_STRTAB]; + _dl_if_debug_dprint("\tsearching exe's RPATH='%s'\n", pnt); + if ((tpnt1 = search_for_named_library(libname, rflags, pnt, rpnt)) != NULL) + return tpnt1; + } +#endif #endif

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