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| author | Fangrui Song <maskray@google.com> | 2021-09-13 12:39:20 -0700 |
|---|---|---|
| committer | Fangrui Song <maskray@google.com> | 2021-09-13 12:39:20 -0700 |
| commit | 5f07d47e4b3d137edfbe3ea6c4eeba1ea6cfa54d (patch) | |
| tree | 9e0b40d482c03388e69acbb4f1028fd1fc0542ca | |
| parent | 43cea6d5652b6b9e61ac6ecc69419c909b504f47 (diff) | |
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configure: Fix check for INSERT in linker script
GCC/Clang use local access when referencing a const variable,
so the conftest.so may have no dynamic relocation.
LLD reports `error: unable to insert .foo after .rela.dyn` when the
destination section does not exist.
Use a non-const int to ensure that .rela.dyn exists.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
| -rwxr-xr-x | configure | 2 | ||||
| -rw-r--r-- | configure.ac | 2 |
2 files changed, 2 insertions, 2 deletions
@@ -5793,7 +5793,7 @@ if ${libc_cv_insert+:} false; then : $as_echo_n "(cached) " >&6 else cat > conftest.c <<EOF - const int __attribute__ ((section(".bar"))) bar = 0x12345678; + int __attribute__ ((section(".bar"))) bar = 0x12345678; int test (void) { return bar; } EOF cat > conftest.t <<EOF diff --git a/configure.ac b/configure.ac index d9232418de..00f49f09f7 100644 --- a/configure.ac +++ b/configure.ac @@ -1217,7 +1217,7 @@ AC_SUBST(libc_cv_protected_data) AC_CACHE_CHECK(linker support for INSERT in linker script, libc_cv_insert, [cat > conftest.c <<EOF - const int __attribute__ ((section(".bar"))) bar = 0x12345678; + int __attribute__ ((section(".bar"))) bar = 0x12345678; int test (void) { return bar; } EOF cat > conftest.t <<EOF |