Enable most tests on FreeBSD.

implib-gen.py

@@ -146,6 +146,19 @@ def collect_relocs(f):
         error("multiple headers in output of readelf")
       words = re.split(r'\s\s+', line)  # "Symbol's Name + Addend"
       toc = make_toc(words)
+    elif re.match(r'^\s*r_offset', line):  # FreeBSD header?
+      if toc is not None:
+        error("multiple headers in output of readelf")
+      words = re.split(r'\s\s+', line)  # "st_name + r_addend"
+      toc = make_toc(words)
+      rename = {
+        'r_offset'           : 'Offset',
+        'r_info'             : 'Info',
+        'r_type'             : 'Type',
+        'st_value'           : 'Symbol\'s Value',
+        'st_name + r_addend' : 'Symbol\'s Name + Addend',
+      }
+      toc = {idx : rename[name] for idx, name in toc.items()}
     elif toc is not None:
       line = re.sub(r' \+ ', '+', line)
       words = re.split(r'\s+', line)

scripts/install-freebsd-prereqs.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -eu
+
+pkg update
+pkg upgrade
+pkg install gcc g++ binutils python3

tests/basic/run.sh

@@ -25,6 +25,7 @@ fi
 . ../common.sh
 
 CFLAGS="-g -O2 $CFLAGS"
+CFLAGS="-Wno-unused-command-line-argument $CFLAGS"  # For -no-pie on BSD
 
 # Build shlib to test against
 $CC $CFLAGS -shared -fPIC interposed.c -o libinterposed.so