diff --git a/extensions/curl/AMBuilder b/extensions/curl/AMBuilder
index 05423ed4..95662880 100644
--- a/extensions/curl/AMBuilder
+++ b/extensions/curl/AMBuilder
@@ -5,7 +5,7 @@ import ambuild.osutil as osutil
 
 def BuildCURL():
 	curl = AMBuild.AddJob('curl')
-	if AMBuild.target['platform'] == 'linux':
+	if AMBuild.target['platform'] == 'linux' or AMBuild.target['platform'] == 'darwin':
 		if not osutil.FileExists(os.path.join(AMBuild.outputFolder, 'curl', 'Makefile')):
 			args = ['/bin/bash',
 							os.path.join(AMBuild.sourceFolder, 'extensions', 'curl', 'curl-src', 'configure'),
@@ -16,7 +16,13 @@ def BuildCURL():
 							'--without-libidn',
 							'--without-libssh2',
 							'--without-zlib']
-			curl.AddCommand(command.DirectCommand(args))
+			if AMBuild.target['platform'] == 'linux':
+				env = None
+			elif AMBuild.target['platform'] == 'darwin':
+				env = os.environ.copy()
+				env['CFLAGS'] = '-m32 -isysroot /Developer/SDKs/MacOSX10.5.sdk'
+				env['LDFLAGS'] = '-mmacosx-version-min=10.5'
+			curl.AddCommand(command.DirectCommand(argv = args, env = env))
 			curl.AddCommand(command.ShellCommand('cd lib && make'))
 	else:
 		args = ['vcbuild',
@@ -42,13 +48,14 @@ binary.AddSourceFiles('extensions/curl', [
 	'sdk/smsdk_ext.cpp',
 	])
 
-if AMBuild.target['platform'] == 'linux':
+if AMBuild.target['platform'] == 'linux' or AMBuild.target['platform'] == 'darwin':
 	path = os.path.join(AMBuild.outputFolder,
                       'curl',
                       'lib',
                       '.libs',
                       'libcurl.a')
-	binary['POSTLINKFLAGS'].append('-lrt')
+	if AMBuild.target['platform'] == 'linux':
+		binary['POSTLINKFLAGS'].append('-lrt')
 	binary.AddObjectFiles([path])
 elif AMBuild.target['platform'] == 'windows':
 	path = os.path.join(AMBuild.sourceFolder,
diff --git a/extensions/mysql/AMBuilder b/extensions/mysql/AMBuilder
index 1ad18d78..7342bf59 100644
--- a/extensions/mysql/AMBuilder
+++ b/extensions/mysql/AMBuilder
@@ -8,7 +8,7 @@ compiler['CXXINCLUDES'].append(os.path.join(SM.mmsPath, 'core', 'sourcehook'))
 extension = AMBuild.AddJob('dbi.mysql.ext')
 binary = Cpp.LibraryBuilder('dbi.mysql.ext', AMBuild, extension, compiler)
 
-if AMBuild.target['platform'] == 'linux':
+if AMBuild.target['platform'] == 'linux' or AMBuild.target['platform'] == 'darwin':
 	lib = os.path.join(AMBuild.cache['MYSQL5'], 'lib', 'libmysqlclient_r.a')
 	link = [lib,
           '-lz',
diff --git a/extensions/mysql/mysql/MyDriver.h b/extensions/mysql/mysql/MyDriver.h
index fd78ff33..81ef7d90 100644
--- a/extensions/mysql/mysql/MyDriver.h
+++ b/extensions/mysql/mysql/MyDriver.h
@@ -39,6 +39,8 @@
 #endif
 
 #include <mysql.h>
+#include <my_global.h>
+#include <my_sys.h>
 
 #include <sh_string.h>
 #include <sh_list.h>
diff --git a/extensions/sqlite/AMBuilder b/extensions/sqlite/AMBuilder
index 883a54cb..cb75742f 100644
--- a/extensions/sqlite/AMBuilder
+++ b/extensions/sqlite/AMBuilder
@@ -32,7 +32,7 @@ files = [
 	]
 if AMBuild.target['platform'] == 'windows':
   files.extend(['sqlite-source/mutex_w32.c', 'sqlite-source/os_win.c'])
-elif AMBuild.target['platform'] == 'linux':
+elif AMBuild.target['platform'] == 'linux' or AMBuild.target['platform'] == 'darwin':
   files.extend(['sqlite-source/mutex_unix.c', 'sqlite-source/os_unix.c'])
 binary.AddSourceFiles('extensions/sqlite', files)
 SM.AutoVersion('extensions/sqlite', binary)
diff --git a/sourcepawn/compiler/AMBuilder b/sourcepawn/compiler/AMBuilder
index ff5ed2c8..d998f93a 100644
--- a/sourcepawn/compiler/AMBuilder
+++ b/sourcepawn/compiler/AMBuilder
@@ -9,13 +9,16 @@ compiler['CINCLUDES'].append(os.path.join(AMBuild.outputFolder, 'includes'))
 
 if compiler.cc.name == 'gcc':
 	compiler['CFLAGS'].extend(['-Wno-parentheses', '-Wno-format'])
-	compiler['POSTLINKFLAGS'].extend(['-lgcc', '-lm'])
+	if AMBuild.target['platform'] == 'linux':
+		compiler['POSTLINKFLAGS'].extend(['-lgcc', '-lm'])
 elif compiler.cc.name == 'msvc':
 	compiler['POSTLINKFLAGS'].remove('/SUBSYSTEM:WINDOWS')
 	compiler['POSTLINKFLAGS'].append('/SUBSYSTEM:CONSOLE')
 
 if AMBuild.target['platform'] == 'linux':
 	compiler['CDEFINES'].extend(['LINUX', 'HAVE_STDINT_H', 'AMX_ANSIONLY', 'ENABLE_BINRELOC'])
+elif AMBuild.target['platform'] == 'darwin':
+	compiler['CDEFINES'].extend(['DARWIN', 'HAVE_STDINT_H', 'AMX_ANSIONLY', 'ENABLE_BINRELOC'])
 
 extension = AMBuild.AddJob('spcomp')
 binary = Cpp.ExecutableBuilder('spcomp', AMBuild, extension, compiler)
diff --git a/sourcepawn/compiler/pawncc.c b/sourcepawn/compiler/pawncc.c
index 8d591a26..7b813e5b 100644
--- a/sourcepawn/compiler/pawncc.c
+++ b/sourcepawn/compiler/pawncc.c
@@ -8,7 +8,7 @@
 #include "amxdbg.h"
 #include "osdefs.h"
 #include "zlib/zlib.h"
-#if defined LINUX
+#if defined LINUX || defined DARWIN
 #include <unistd.h>
 #elif defined WIN32
 #include <io.h>
diff --git a/sourcepawn/compiler/sc1.c b/sourcepawn/compiler/sc1.c
index 5543deee..3deb4696 100644
--- a/sourcepawn/compiler/sc1.c
+++ b/sourcepawn/compiler/sc1.c
@@ -35,7 +35,7 @@
   #include <io.h>
 #endif
 
-#if defined LINUX || defined __FreeBSD__ || defined __OpenBSD__
+#if defined LINUX || defined __FreeBSD__ || defined __OpenBSD__ || defined DARWIN
   #include <sclinux.h>
   #include <binreloc.h> /* from BinReloc, see www.autopackage.org */
   #include <unistd.h>