Python should always build modules pic. Bug 15780280

This patch is a Solaris-specific hack; it will not be submitted upstream.

--- Python-3.7.4/Lib/distutils/sysconfig.py
+++ Python-3.7.4/Lib/distutils/sysconfig.py
@@ -225,6 +225,22 @@ def customize_compiler(compiler):
         else:
             archiver = ar + ' ' + ar_flags
 
+        # Force PIC compilation. Determine if GNU compiler or otherwise
+        # and set the PIC flag(s) accordingly. Defaults to Studio compiler.
+        if re.search('-.PIC', cflags) == None:
+            try:
+                out = os.popen(cc + ' --version 2>/dev/null', 'r')
+                out_string = out.read()
+                out.close()
+                result = re.search(' (\d+\.\d+(\.\d+)*)', out_string)
+                kpic_flags = "-fPIC -DPIC" if result else "-KPIC -DPIC"
+            except ImportError:
+                # The only time the above should fail is during boot-strapping
+                # when time (os imports subprocess which imports time) is not
+                # yet available.  Assume Studio compiler for that case.
+                kpic_flags = "-KPIC -DPIC"
+            cflags += ' ' + kpic_flags
+
         cc_cmd = cc + ' ' + cflags
         compiler.set_executables(
             preprocessor=cpp,
--- Python-3.7.4/Lib/distutils/tests/test_sysconfig.py
+++ Python-3.7.4/Lib/distutils/tests/test_sysconfig.py
@@ -127,10 +127,10 @@ class SysconfigTestCase(support.EnvironG
         self.assertEqual(comp.exes['preprocessor'],
                          'env_cpp --env-cppflags')
         self.assertEqual(comp.exes['compiler'],
-                         'env_cc --sc-cflags --env-cflags --env-cppflags')
+                         'env_cc --sc-cflags --env-cflags --env-cppflags -KPIC -DPIC')
         self.assertEqual(comp.exes['compiler_so'],
                          ('env_cc --sc-cflags '
-                          '--env-cflags ''--env-cppflags --sc-ccshared'))
+                          '--env-cflags ''--env-cppflags -KPIC -DPIC --sc-ccshared'))
         self.assertEqual(comp.exes['compiler_cxx'],
                          'env_cxx --env-cxx-flags')
         self.assertEqual(comp.exes['linker_exe'],
@@ -156,9 +156,9 @@ class SysconfigTestCase(support.EnvironG
         self.assertEqual(comp.exes['preprocessor'],
                          'sc_cc -E')
         self.assertEqual(comp.exes['compiler'],
-                         'sc_cc --sc-cflags')
+                         'sc_cc --sc-cflags -KPIC -DPIC')
         self.assertEqual(comp.exes['compiler_so'],
-                         'sc_cc --sc-cflags --sc-ccshared')
+                         'sc_cc --sc-cflags -KPIC -DPIC --sc-ccshared')
         self.assertEqual(comp.exes['compiler_cxx'],
                          'sc_cxx')
         self.assertEqual(comp.exes['linker_exe'],