From 7ac12c8a885502b335198e4f1e36f3055a877d63 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 5 Jun 2021 15:06:16 +0000
Subject: build system: cfgtest_compiler_switch(): ldflag: added freestanding
 support.

---
 sofort/cfgtest/cfgtest.sh | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/sofort/cfgtest/cfgtest.sh b/sofort/cfgtest/cfgtest.sh
index f66dde5..46c431f 100644
--- a/sofort/cfgtest/cfgtest.sh
+++ b/sofort/cfgtest/cfgtest.sh
@@ -39,6 +39,7 @@ cfgtest_host_section()
 	mb_cfgtest_cc="$ccenv_host_cc"
 	mb_cfgtest_cfgtype='host'
 	mb_cfgtest_stdin_input=${ccenv_host_stdin_input:-}
+	mb_cfgtest_environment=${ccenv_host_cc_environment:-}
 
 	mb_cfgtest_cflags=$(${mb_make} -n -f "$mb_pwd/Makefile.tmp" \
 		OS_DSO_EXRULES=default                              \
@@ -64,6 +65,7 @@ cfgtest_native_section()
 	mb_cfgtest_cc="$ccenv_native_cc"
 	mb_cfgtest_cfgtype='native'
 	mb_cfgtest_stdin_input=${ccenv_native_stdin_input:-}
+	mb_cfgtest_environment=${ccenv_native_cc_environment:-}
 
 	mb_cfgtest_cflags=$(${mb_make} -n -f "$mb_pwd/Makefile.tmp" \
 		OS_DSO_EXRULES=default                              \
@@ -600,7 +602,18 @@ cfgtest_compiler_switch()
 
 	case "${1}" in
 		-Wl,*)
-			cfgtest_code_snippet='int main(void){return 0;}'
+			if [ "$mb_cfgtest_environment" = 'freestanding' ]; then
+				cfgtest_switches="$cfgtest_switches -nostdlib -nostartfiles"
+
+				if [ -z "ccenv_cc_underscore" ]; then
+					cfgtest_code_snippet='int start(void){return 0;}'
+				else
+					cfgtest_code_snippet='int _start(void){return 0;}'
+				fi
+			else
+				cfgtest_code_snippet='int main(void){return 0;}'
+			fi
+
 			cfgtest_common_init 'ldflag'
 			;;
 
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