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gnu: gcc: Fix mingw cross compiler.

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* gnu/packages/patches/gcc-7-cross-mingw.patch: New file.
* gnu/packages/cross-base.scm (cross-gcc-patches): Add XGCC parameter; update
caller.  Use it for target mingw and gcc >= 7.
* gnu/local.mk (dist_patch_DATA): Add it.
This commit is contained in:
Jan Nieuwenhuizen 2019-09-24 20:23:31 +02:00
parent fc16ef9d90
commit 308eb5c11a
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3 changed files with 33 additions and 5 deletions
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24
gnu/packages/patches/gcc-7-cross-mingw.patch Normal file
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@ -0,0 +1,24 @@
This fixes
../../../../gcc-7.4.0/libstdc++-v3/libsupc++/new_opa.cc: In function ‘void* __gnu_cxx::aligned_alloc(std::size_t, std::size_t)’:
../../../../gcc-7.4.0/libstdc++-v3/libsupc++/new_opa.cc:78:10: error: ‘memalign’ was not declared in this scope
return memalign (al, sz);
^~~~~~~~
../../../../gcc-7.4.0/libstdc++-v3/libsupc++/new_opa.cc:78:10: note: suggested alternative: ‘max_align_t’
return memalign (al, sz);
^~~~~~~~
max_align_t
diff --git a/libstdc++-v3/libsupc++/new_opa.cc b/libstdc++-v3/libsupc++/new_opa.cc
index 94e79cadb0e..084900e0daf 100644
--- a/libstdc++-v3/libsupc++/new_opa.cc
+++ b/libstdc++-v3/libsupc++/new_opa.cc
@@ -39,6 +39,8 @@ extern "C" void *memalign(std::size_t boundary, std::size_t size);
# endif
#endif
+#define memalign _aligned_malloc
+
using std::new_handler;
using std::bad_alloc;