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PI_STATIC_AND_HIDDEN indicates whether accesses to internal linkage variables and hidden visibility variables in a shared object (ld.so) need dynamic relocations (usually R_*_RELATIVE). PI (position independent) in the macro name is a misnomer: a code sequence using GOT is typically position-independent as well, but using dynamic relocations does not meet the requirement. Not defining PI_STATIC_AND_HIDDEN is legacy and we expect that all new ports will define PI_STATIC_AND_HIDDEN. Current ports defining PI_STATIC_AND_HIDDEN are more than the opposite. Change the configure default. No functional change. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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# Local configure fragment for sysdeps/riscv/elf.
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# Check if static linker supports R_RISCV_ALIGN
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for R_RISCV_ALIGN linker relaxation support" >&5
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$as_echo_n "checking for R_RISCV_ALIGN linker relaxation support... " >&6; }
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if ${libc_cv_riscv_r_align+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat > conftest.S <<EOF
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.align 3
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foo:
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li a0,42
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ret
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EOF
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libc_cv_riscv_r_align=no
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if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostdlib -nostartfiles $no_ssp -shared -fPIC -o contests.o conftest.S'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_cv_riscv_r_align=yes
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fi
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rm -rf conftest.*
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_riscv_r_align" >&5
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$as_echo "$libc_cv_riscv_r_align" >&6; }
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config_vars="$config_vars
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riscv-r-align = $libc_cv_riscv_r_align"
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