diff options
| author | Iain Sandoe <iain@sandoe.co.uk> | 2022-01-06 08:37:18 +0000 |
|---|---|---|
| committer | Iain Sandoe <iain@sandoe.co.uk> | 2022-12-23 08:53:17 +0000 |
| commit | a846817739c1e7b930d593cd51963d6b46b5dfc6 (patch) | |
| tree | e02791743f332c918878dd8514736619063b13d2 /gcc | |
| parent | 16eb1f43ab4e521ed4503e7766eee25da75eaeba (diff) | |
| download | gcc-a846817739c1e7b930d593cd51963d6b46b5dfc6.zip gcc-a846817739c1e7b930d593cd51963d6b46b5dfc6.tar.gz gcc-a846817739c1e7b930d593cd51963d6b46b5dfc6.tar.bz2 | |
c++, driver: Fix -static-libstdc++ for targets without Bstatic/dynamic.
The current implementation for swapping between the static and shared c++
runtimes relies on the static linker supporting Bstatic/dynamic which is
not available for every target (Darwin's linker does not support this).
Specs substitution (%s) is an alternative solution for this (which is what
Darwin uses for Fortran, D and Objective-C). However, specs substitution
requires that the '-static-libstdc++' be preserved in the driver's command
line. The patch here arranges for this to be done when the configuration
determines that linker support for Bstatic/dynamic is missing.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
gcc/cp/ChangeLog:
* g++spec.cc (lang_specific_driver): Preserve -static-libstdc++ in
the driver command line for targets without -Bstatic/dynamic support
in their static linker.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/g++spec.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/cp/g++spec.cc b/gcc/cp/g++spec.cc index 3d3b042..f95d796 100644 --- a/gcc/cp/g++spec.cc +++ b/gcc/cp/g++spec.cc @@ -234,7 +234,12 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options, case OPT_static_libstdc__: library = library >= 0 ? 2 : library; +#ifdef HAVE_LD_STATIC_DYNAMIC + /* Remove -static-libstdc++ from the command only if target supports + LD_STATIC_DYNAMIC. When not supported, it is left in so that a + back-end target can use outfile substitution. */ args[i] |= SKIPOPT; +#endif break; case OPT_stdlib_: |