From GNU gettext:
+Library linking and rpath helper macros.
lib-ld.m4
lib-link.m4
lib-prefix.m4
+Integer data type test macros.
+
+ intmax.m4
+ wint_t.m4
+ inttypes-pri.m4
+ uintmax_t.m4
+ stdint_h.m4
+ intdiv0.m4
+ inttypes_h.m4
+
+Program test macro.
+
+ progtest.m4
+
+GNU libc version test macros.
+
+ glibc2.m4
+ glibc21.m4
+
+
+From UCL and LZO:
+Compiler ACC conformance testing macros.
+
+ mfx_acc.m4
+ mfx_cppflags.m4
+ mfx_limits.m4
+
+
+From OSSP-JS:
+Test macros for va_copy() implementations.
+
+ va_copy.m4
+
+
+From libmikmod:
+Feature test macros for the Enlightment Sound Daemon.
+
+ esd.m4
+
+
+From libdnet:
+Feature test macros for socket api implementations.
+
+ dnet.m4
+
+
+From FLAC:
+XMMS feature detection macros.
+
+ xmms.m4
+
+
+From ao:
+Directory expansion macro for Automake.
+
+ as-ac-expand.m4
+
+
+From tinyproxy:
+Autostars m4 macro for detection of compiler flags.
+
+ as-compiler-flags.m4
+
+
+From morituri:
+Autostars m4 macro for versioning.
+
+ as-version.m4
+
+
+From liboil:
+Check if unaligned memory access works correctly.
+
+ as-unaligned-access.m4
+
+
+From OpenWrt:
+Always disable GTK docs.
+
+ fake-gtk-doc-check.m4
+
+Provide intltool.m4 stubs to allow for autoreconf.
+
+ fake-intltool.m4
+
+From XDM:
+XAW macros.
+
+ xaw.m4