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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | Re: R3.14.2 linker options for building on linux |
| From: | Ralph Lange <[email protected]> |
| To: | Geoff Savage <[email protected]> |
| Cc: | EPICS Tech-Talk <[email protected]> |
| Date: | Fri, 13 Jun 2003 09:37:35 +0200 |
Geoff, Janet added this option in 3.14.2 for the GNU loader to disallow undefined symbols (not just warn about them) when building shared libraries (see: "man ld"). Probably to avoid a situation where some EPICS core libraries would be built (with unresolved symbols) without make stumbling, but applications trying to use these libraries would not be guaranteed to work. I just rebuild 3.14.2 and don't have problems building it (RedHat 8.0 running GNU ld version 2.13.90.0.2 20020802) - even with the "-z defs". ??! Ralph >>>>> "Geoff" == Geoff Savage <[email protected]> writes: > This line was added to configure/os/CONFIG.linux-x86.linux-x86 between > R3.14.1 and R3.14.2. > SHRLIB_LDFLAGS += -shared -z defs > I can't find any simple explanation for the need for the -z defs part. > After removing this option base builds on linux. Any insights? > Thanks > Geoff