configure.ac: Support libmagic.

README.md

@@ -56,6 +56,9 @@ Provides HTTPS TLS / X.509 / etc.
 - **zlib** or **lz4** or **snappy** (Compression library):
 Provides compression for the database, etc.
 
+- **libmagic** (Optional)
+Content MIME type recognition.
+
 - **GNU C++ compiler**, **automake**, **autoconf**, **autoconf2.13**,
 **autoconf-archive**, **libtool**, **shtool**
 

configure.ac

@@ -1200,6 +1200,26 @@ AM_CONDITIONAL([PCRE], [test "x$have_pcre" = "xyes"])
 
 
 
+dnl
+dnl libmagic support
+dnl
+
+RB_CHK_SYSHEADER(magic.h, [MAGIC_H])
+AC_CHECK_LIB(magic, magic_version,
+[
+	have_magic="yes"
+	AC_SUBST(MAGIC_CPPFLAGS, [])
+	AC_SUBST(MAGIC_LDFLAGS, [])
+	AC_SUBST(MAGIC_LIBS, ["-lmagic"])
+	AC_DEFINE(HAVE_MAGIC, 1, [Define to 1 if libmagic (-lmagic) is available.])
+], [
+	have_magic="no"
+])
+
+AM_CONDITIONAL([MAGIC], [test "x$have_magic" = "xyes"])
+
+
+
 dnl
 dnl Additional linkages
 dnl
@@ -1389,6 +1409,7 @@ echo "Building JS (SpiderMonkey) ........ $with_included_js"
 echo "GNU MP support .................... $have_gmp"
 echo "Sodium support .................... $have_sodium"
 echo "SSL support........................ $SSL_TYPE"
+echo "Magic support...................... $have_magic"
 echo "Precompiled headers ............... $build_pch"
 echo "Developer debug ................... $debug"
 echo "IPv6 support ...................... $ipv6"

ircd/Makefile.am

@@ -14,6 +14,7 @@ AM_CPPFLAGS = \
 	-DBOOST_COROUTINE_NO_DEPRECATION_WARNING=1 \
 	@BOOST_CPPFLAGS@ \
 	@SODIUM_CPPFLAGS@ \
+	@MAGIC_CPPFLAGS@ \
 	-include ircd/ircd.h \
 	###
 
@@ -46,6 +47,7 @@ libircd_la_LDFLAGS = \
 	@JS_LDFLAGS@ \
 	@BOOST_LDFLAGS@ \
 	@SODIUM_LDFLAGS@ \
+	@MAGIC_LDFLAGS@ \
 	###
 
 libircd_la_LIBADD = \
@@ -53,6 +55,7 @@ libircd_la_LIBADD = \
 	@JS_LIBS@ \
 	@BOOST_LIBS@ \
 	@SODIUM_LIBS@ \
+	@MAGIC_LIBS@ \
 	-lcrypto \
 	-lssl \
 	-lz \