arm: Optimize arm-mlib.h header inclusion [pr108505].

I have committed a fix [1] into gcc trunk for a build
issue mentioned in pr108505 and latter received few upstream
comments proposing more robust fix for this issue.

In this patch I'm addressing those comments and sending this
as a followup patch.

gcc/ChangeLog:

2023-01-27  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	PR target/108505
	* config.gcc (tm_mlib_file): Define new variable.

diff --git a/gcc/config.gcc b/gcc/config.gcc
index f0958e1c959d89f015cffb754dae61b4a3ae886f..067720ac795b1b5d80fae48ab941b3b91b09fa27 100644 (file)
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4359,6 +4359,7 @@ case "${target}" in
                                        case ${arm_multilib} in
                                        aprofile|rmprofile)
                                                tmake_profile_file="arm/t-multilib"
+                                               tm_mlib_file="arm/arm-mlib.h"
                                                ;;
                                        @*)
                                                ml=`echo "X$arm_multilib" | sed '1s,^X@,,'`
@@ -4397,7 +4398,7 @@ case "${target}" in
                                # through to the multilib selector
                                with_float="soft"
                                tmake_file="${tmake_file} ${tmake_profile_file}"
-                               tm_file="$tm_file arm/arm-mlib.h"
+                               tm_file="$tm_file $tm_mlib_file"
                                TM_MULTILIB_CONFIG="$with_multilib_list"
                        fi
                fi