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| author | Ivan Maidanski <ivmai@mail.ru> | 2019-11-07 11:30:58 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2019-11-07 11:39:24 +0300 |
| commit | 3efd0bc4e443132653d42aca1a80b22b14930dd8 (patch) | |
| tree | 273898bc8115ad060b6252297edae78663687eea /doc | |
| parent | 4dada595d172ba6bd8dd5be1d961d68f08c82058 (diff) | |
| download | bdwgc-3efd0bc4e443132653d42aca1a80b22b14930dd8.tar.gz | |
Build gctba library
Issue #268 (bdgwc).
The library exports only GC_throw_bad_alloc C++ function. It is intended
to solve "undefined reference to GC_throw_bad_alloc" linkage error when
the client needs to avoid linking with gccpp library (to avoid "::new"
redirection, in turn).
* CMakeLists.txt (enable_throw_bad_alloc_library): New option (ON by
default).
* CMakeLists.txt [enable_cplusplus && enable_throw_bad_alloc_library]
(gctba): New library.
* Makefile.am [CPLUSPLUS && GC_TBA_LIBRARY] (lib_LTLIBRARIES): Add
libgctba.la item.
* Makefile.am [CPLUSPLUS && GC_TBA_LIBRARY] (libgctba_la_SOURCES,
libgctba_la_LIBADD, libgctba_la_LDFLAGS): New variable.
* Makefile.direct: Update head comment (mention gctba.a).
* Makefile.direct (bsd-libgctba.a, gctba.a): New target.
* NT_MAKEFILE (gctba.lib): Likewise.
* WCC_MAKEFILE (gctba.lib): Likewise.
* WCC_MAKEFILE [!ENABLE_STATIC] (gctba.dll): Likewise.
* Makefile.direct (bsd-libgc.a): Move gctba.a to bsd-libgctba.a.
* Makefile.direct (BSD-pkg-install): Copy bsd-libgctba.a; install
libgctba.a.
* Makefile.direct (c++): Add dependency on gc_badalc.o; call rus, $(AR)
and $(RANLIB) for gctba.a.
* NT_MAKEFILE (all): Add dependency on gctba.lib.
* WCC_MAKEFILE (all): Likewise.
* README.QUICK: Update information about "make c++" (reference
libgctba.a, libgctba.so and doc/gcinterface.md).
* configure.ac (throw-bad-alloc-library): Specify new AC_ARG_ENABLE.
* configure.ac (GC_TBA_LIBRARY): New AM_CONDITIONAL.
* doc/gcinterface.md (Class inheritance based interface): Add
information about libgctba library; document GC_NEW_ABORTS_ON_OOM and
GC_INCLUDE_NEW macros.
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/gcinterface.md | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/gcinterface.md b/doc/gcinterface.md index cf648cc4..e21efbc9 100644 --- a/doc/gcinterface.md +++ b/doc/gcinterface.md @@ -209,6 +209,15 @@ Linking against `libgccpp` in addition to the `gc` library overrides `::new` (and friends) to allocate traceable but uncollectible memory, making it safe to refer to collectible objects from the resulting memory. +If the user includes `gc_cpp.h` but `::new` should not be overridden then +`libgctba` (in addition to the `gc`) library should be linked with to provide +the definition of `GC_throw_bad_alloc` C++ function used by operator `new` of +class `gc`. Alternatively, the client may define `GC_NEW_ABORTS_ON_OOM` macro +before include of `gc_cpp.h` (this instructs `::new` to issue an abort instead +of throwing an exception), or may define `GC_INCLUDE_NEW` one before include +of `gc_cpp.h` (however, this might not compile or work as expected on some +platforms). + ## C interface It is also possible to use the C interface from `gc.h` directly. On platforms |