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configure: Check availability of __attribute__((symver)). #141

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Sep 17, 2021
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configure: Check availability of __attribute__((symver)). #141

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4ab5f67
build-aux/ax_gcc_func_attribute.m4: New file.
besser82 Sep 17, 2021
02348da
build-aux/ax_gcc_func_attribute.m4: Add check for symver attribute.
besser82 Sep 17, 2021
9f6bc5d
configure: Check availability of __attribute__((symver)).
besser82 Sep 17, 2021
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configure: Check availability of __attribute__((symver)). 
Fixes #140.
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@besser82
besser82 committed Sep 17, 2021
commit 9f6bc5d321c0de58847912cb3a51d58818c13d27
1 change: 1 addition & 0 deletions configure.ac
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Expand Up @@ -156,6 +156,7 @@ zw_C_ENDIANNESS
zw_C_STATIC_ASSERT
zw_PROG_LD_WRAP
AX_CHECK_VSCRIPT
AX_GCC_FUNC_ATTRIBUTE(symver)

# FIXME: This only checks whether the linker accepts either
# -Wl,-z,defs or -Wl,--no-undefined. It doesn't check that the switch
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2 changes: 1 addition & 1 deletion lib/crypt-port.h
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Expand Up @@ -208,7 +208,7 @@ extern size_t strcpy_or_abort (void *dst, size_t d_size, const void *src);

/* Starting with GCC 10, we can use the symver attribute, which is also
needed at the point we decide to enable link-time optimization. */
# if __GNUC__ >= 10
# if defined HAVE_FUNC_ATTRIBUTE_SYMVER

/* Set the symbol version for EXTNAME, which uses INTNAME as its
implementation. */
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