ci: add a script to install tcc from source on freebsd so it can be run the freebsd job

.cirrus.yml

@@ -2,12 +2,13 @@ freebsd_instance:
   image_family: freebsd-13-0
 
 task:
-  install_script: pkg install -y git tcc
+  install_script: pkg install -y git tcc bash
   script: |
     echo 'Building V'
     git clone https://github.com/vlang/v
     cd v
     make
-    tcc --version
+	## .github/workflows/freebsd_build_tcc.sh
+    tcc -v -v
     echo 'Build cmd/tools/fast'
     cd cmd/tools/fast && ../../../v fast.v && ./fast

.github/workflows/freebsd_build_tcc.sh

@@ -0,0 +1,26 @@
+#!/usr/local/bin/bash
+
+## should be run in V's main repo folder!
+
+rm -rf tinycc/
+rm -rf thirdparty/tcc/
+
+pushd .
+
+git clone git://repo.or.cz/tinycc.git
+cd tinycc
+
+./configure --prefix=thirdparty/tcc \
+            --bindir=thirdparty/tcc \
+            --crtprefix=thirdparty/tcc/lib:/usr/lib \
+            --libpaths=thirdparty/tcc/lib:/usr/lib:/lib:/usr/local/lib \
+            --debug
+make
+make install
+
+popd
+
+mv tinycc/thirdparty/tcc thirdparty/tcc
+mv thirdparty/tcc/tcc thirdparty/tcc/tcc.exe
+
+thirdparty/tcc/tcc.exe -v -v