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| author | Joakim Nohlgård <joakim@nohlgard.se> | 2023-04-30 10:34:26 -0600 |
|---|---|---|
| committer | Jeff Law <jlaw@ventanamicro> | 2023-04-30 10:34:26 -0600 |
| commit | 2744dbb9ecf104a113da3a0f39115da4653bb676 (patch) | |
| tree | 61d8f4c6f9ca840e206733ddd0d105e865cc2a0f /gcc/configure.ac | |
| parent | d2ab430a16caa62a4cd71490e1a8759a1dd09c8e (diff) | |
| download | gcc-2744dbb9ecf104a113da3a0f39115da4653bb676.tar.gz | |
gcc: Use ld -r when checking for HAVE_LD_RO_RW_SECTION_MIXING
Fall back to ld -r if ld -shared fails during configure. The check for
HAVE_LD_RO_RW_SECTION_MIXING can fail on targets where ld does not
support shared objects, even though the answer to the test should be
'read-write'. One such target is riscv64-unknown-elf. Failing this test
results in a libgcc crtbegin.o which has a writable .eh_frame section
leading to the default linker scripts placing the .eh_frame section in a
writable memory segment, or a linker warning when using ld scripts that
place .eh_frame unconditionally in ROM.
gcc/ChangeLog:
* configure: Regenerate.
* configure.ac: Use ld -r in the check for HAVE_LD_RO_RW_SECTION_MIXING
Diffstat (limited to 'gcc/configure.ac')
| -rw-r--r-- | gcc/configure.ac | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac index 09082e8ccae..73ff7c23c63 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -3187,16 +3187,19 @@ elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then echo '.byte 0' >> conftest3.s if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ - && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ - && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ - conftest2.o conftest3.o > /dev/null 2>&1; then - gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ - | sed -e '/myfoosect/!d' -e N` - if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then - if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then - gcc_cv_ld_ro_rw_mix=read-only - else - gcc_cv_ld_ro_rw_mix=read-write + && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1; then + if $gcc_cv_ld -shared -o conftest1.so conftest1.o \ + conftest2.o conftest3.o > /dev/null 2>&1 \ + || $gcc_cv_ld -r -o conftest1.so conftest1.o \ + conftest2.o conftest3.o > /dev/null 2>&1; then + gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ + | sed -e '/myfoosect/!d' -e N` + if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then + if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then + gcc_cv_ld_ro_rw_mix=read-only + else + gcc_cv_ld_ro_rw_mix=read-write + fi fi fi fi |