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c579293f67
This patch allows the static PIE startfile rcrt1.o to be built without requiring libgcc_s.so from GCC, which depends on libc in the first place.
136 lines
4.7 KiB
Plaintext
136 lines
4.7 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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# Local configure fragment for sysdeps/loongarch/elf.
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printf "%s\n" "#define HIDDEN_VAR_NEEDS_DYNAMIC_RELOC 1" >>confdefs.h
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if the toolchain is sufficient to build static PIE on LoongArch" >&5
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printf %s "checking if the toolchain is sufficient to build static PIE on LoongArch... " >&6; }
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if test ${libc_cv_static_pie_on_loongarch+y}
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then :
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printf %s "(cached) " >&6
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else $as_nop
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cat > conftest1.S <<\EOF
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.global _start
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.type _start, @function
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_start:
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li.w $a7, 93
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/* This ensures the assembler supports explicit reloc. */
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pcalau12i $a0, %pc_hi20(x)
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ld.w $a0, $a0, %pc_lo12(x)
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syscall 0
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.data
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x:
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.word 0
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/* This should produce an R_LARCH_RELATIVE in the static PIE. */
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.dword _start
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EOF
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cat > conftest2.S <<\EOF
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.global f
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.type f, @function
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f:
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/* The linker should be able to handle this and produce a PLT entry. */
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la.pcrel $t0, $t0, external_func
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jirl $zero, $t0, 0
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EOF
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libc_cv_static_pie_on_loongarch=no
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if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostdlib -fPIE -o conftest1 conftest1.S'
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; } \
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&& { ac_try='LC_ALL=C $READELF -Wr conftest1 | grep -q R_LARCH_RELATIVE'
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; } \
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&& ! { ac_try='LC_ALL=C $READELF -Wl conftest1 | grep -q INTERP'
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; } \
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&& { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -shared -nostdlib -fPIC -o conftest2.so conftest2.S'
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; } \
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&& { ac_try='LC_ALL=C $READELF -Wr conftest2.so | grep -q 'R_LARCH_JUMP_SLOT.*external_func''
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_cv_static_pie_on_loongarch=yes
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fi
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rm -rf conftest*
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie_on_loongarch" >&5
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printf "%s\n" "$libc_cv_static_pie_on_loongarch" >&6; }
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if test "$libc_cv_static_pie_on_loongarch" = yes; then
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printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h
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fi
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# Check if gcc supports option -mcmodel=medium.
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC supports option -mcmodel=medium" >&5
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printf %s "checking whether $CC supports option -mcmodel=medium... " >&6; }
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if test ${libc_cv_loongarch_cmodel_medium+y}
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then :
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printf %s "(cached) " >&6
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else $as_nop
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if { ac_try='${CC-cc} -c $CFLAGS -mcmodel=medium /dev/null 1>&5'
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }; then
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libc_cv_loongarch_cmodel_medium=yes
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else
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libc_cv_loongarch_cmodel_medium=no
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fi
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_cmodel_medium" >&5
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printf "%s\n" "$libc_cv_loongarch_cmodel_medium" >&6; }
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config_vars="$config_vars
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have-cmodel-medium = $libc_cv_loongarch_cmodel_medium"
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# Check if asm support vector instructions.
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for vector support in assembler" >&5
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printf %s "checking for vector support in assembler... " >&6; }
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if test ${libc_cv_loongarch_vec_asm+y}
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then :
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printf %s "(cached) " >&6
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else $as_nop
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cat > conftest.s <<\EOF
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vld $vr0, $sp, 0
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EOF
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if { ac_try='${CC-cc} -c $CFLAGS conftest.s -o conftest 1>&5'
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{ { eval echo "\"\$as_me\":${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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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }; then
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libc_cv_loongarch_vec_asm=yes
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else
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libc_cv_loongarch_vec_asm=no
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fi
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rm -f conftest*
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_vec_asm" >&5
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printf "%s\n" "$libc_cv_loongarch_vec_asm" >&6; }
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if test $libc_cv_loongarch_vec_asm = yes; then
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printf "%s\n" "#define HAVE_LOONGARCH_VEC_ASM 1" >>confdefs.h
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fi
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