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d4032f7d09
Some versions of Clang do not properly pass include paths to the assembler when LTO is enabled. That's a problem for the DEMO_EMBED macro used by the demos, since it relies on .incbin. To make matters even better, compilation fails, but doesn't return an error code; the resulting binary is simply broken. Fortunately we don't really care about LTO for the demos, so we can simply disable it. See also https://github.com/llvm/llvm-project/issues/112920 Thanks to Giovanni for tracking down some of the pieces of this issue.
17 lines
741 B
Plaintext
17 lines
741 B
Plaintext
dnl
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dnl This file contains code derived from WINE_TRY_CFLAGS() and is used courtesy of Alexandre Julliard.
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dnl
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dnl VKD3D_CHECK_CFLAGS(flags,[action-if-yes,[action-if-no]])
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AC_DEFUN([VKD3D_CHECK_CFLAGS],
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[AS_VAR_PUSHDEF([vkd3d_cflags], vkd3d_cv_cflags_[[$1]])dnl
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AC_CACHE_CHECK([whether the compiler supports $1], vkd3d_cflags,
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[vkd3d_cflags_saved=$CFLAGS
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CFLAGS="$CFLAGS $1 -Werror"
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AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(int argc, char **argv) { return 0; }]])],
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[AS_VAR_SET(vkd3d_cflags, yes)],
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[AS_VAR_SET(vkd3d_cflags, no)])
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CFLAGS=$vkd3d_cflags_saved])
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AS_VAR_IF([vkd3d_cflags], [yes], [m4_default([$2], [VKD3D_CFLAGS="$VKD3D_CFLAGS $1"])], [$3])dnl
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AS_VAR_POPDEF([vkd3d_cflags])])
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