gdb: Explicitly point to target's libgmp for native build

Starting from GDB 11.x, gmp is needed as a dependency to build full gdb. And by default build system of native GDB will try to link with libgmp of the build host. And to make sure that doesn't happen we need to specify location of the target's sysroot so that library search starts from there. Which we do in that change. Fixes [1] & [1]. [1] crosstool-ng#2084 [2] crosstool-ng#1656 Signed-off-by: Alexey Brodkin <[email protected]>
bhundven · Jan 29, 2024 · 4420873 · 4420873
1 parent 2c93ba7
commit 4420873
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/scripts/build/debug/300-gdb.sh b/scripts/build/debug/300-gdb.sh
@@ -122,6 +122,14 @@ do_debug_gdb_build()
 
         native_extra_config+=("--program-prefix=")
 
+        # Starting from GDB 11.x, gmp is needed as a dependency to build full
+        # gdb. And if target GMP gets built, explicitly point to installed library,
+        # as otherwise host library might be attempted to be used for target binary
+        # linkage.
+        if [ "${CT_GMP_TARGET}" = "y" ]; then
+            native_extra_config+=("--with-libgmp-prefix=${CT_SYSROOT_DIR}")
+        fi
+
         # gdbserver gets enabled by default with gdb
         # since gdbserver was promoted to top-level
         if [ "${CT_GDB_GDBSERVER_TOPLEVEL}" = "y" ]; then