Opened 6 years ago
Closed 2 years ago
#14709 closed defect (fixed)
(Ab)using LIBRARY_PATH instead of using -L${SAGE_LOCAL}/lib doesn't necessarily work
Reported by: | leif | Owned by: | GeorgSWeber |
---|---|---|---|
Priority: | critical | Milestone: | sage-duplicate/invalid/wontfix |
Component: | build | Keywords: | CPATH LIBRARY_PATH SAGE_LOCAL -I -L sage-env search directories paths |
Cc: | Merged in: | ||
Authors: | Reviewers: | ||
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
In sage-env
, we meanwhile add (more precisely, append) ${SAGE_LOCAL}/include
to CPATH
, and ${SAGE_LOCAL}/lib
to LIBRARY_PATH
.
Besides that this is non-portable, or rather a GCC feature, it is not equivalent to adding / prepending -I${SAGE_LOCAL}/include
to CPPFLAGS
/CFLAGS
/CXXFLAGS
and -L${SAGE_LOCAL}/lib
to LDFLAGS
.
First of all, search paths / folders specified on the command line precede all others, and second, those specified through CPATH
, LIBRARY_PATH
etc. are not necessarily searched before system folders.
This currently leads to problems with e.g. readline and R (which doesn't support configuring with --with-readline=<prefix>
, but just =yes
or =no
), where adding Sage's directories was dropped from spkg-install
.
To test this, try for example
$ mkdir -pv /tmp/LOOK_HERE $ env LIBRARY_PATH=/tmp/LOOK_HERE $CC -print-search-dirs | egrep '^libraries|LOOK_HERE' # (and/or) $ env LIBRARY_PATH=/tmp/LOOK_HERE $CC -v -x c /dev/null -o /dev/null 2>&1 | egrep '^LIBRARY_PATH|LOOK_HERE'
where $CC
is the compiler / GCC of your choice (e.g. just gcc
).
Change History (6)
comment:1 Changed 6 years ago by
- Milestone changed from sage-5.11 to sage-5.12
comment:2 Changed 6 years ago by
comment:3 Changed 6 years ago by
- Milestone changed from sage-6.1 to sage-6.2
comment:4 Changed 5 years ago by
- Milestone changed from sage-6.2 to sage-6.3
comment:5 Changed 5 years ago by
- Milestone changed from sage-6.3 to sage-6.4
comment:6 Changed 2 years ago by
- Milestone changed from sage-6.4 to sage-duplicate/invalid/wontfix
- Resolution set to fixed
- Status changed from new to closed
Not using LIBRARY_PATH any more
Isn't LIBRARY_PATH for runtime whereas LD_LIBRARY_PATH is for linking?