Makefile: introduce CHARSET_LIB to link with -lcharset

On some systems, the function locale_charset() may not be exported from
libiconv but is available from libcharset, and we need -lcharset when
linking.

Introduce a make variable CHARSET_LIB that can be set to -lcharsetlib
on such systems.  Also autodetect this in the configure script by first
looking for the symbol in libiconv, and then libcharset.

Signed-off-by: Дилян Палаузов <dilyan.palauzov@aegee.org>

diff --git a/Makefile b/Makefile
index a782409306df85985e1f465eab4bd3cd7fa2cc83..3b2b804fa3567ade9be49f84cee68591fd4f4d00 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -53,6 +53,10 @@ all::
 # FreeBSD can use either, but MinGW and some others need to use
 # libcharset.h's locale_charset() instead.
 #
+# Define CHARSET_LIB to you need to link with library other than -liconv to
+# use locale_charset() function.  On some platforms this needs to set to
+# -lcharset
+#
 # Define LIBC_CONTAINS_LIBINTL if your gettext implementation doesn't
 # need -lintl when linking.
 #
@@ -1692,6 +1696,7 @@ endif
 
 ifdef HAVE_LIBCHARSET_H
        BASIC_CFLAGS += -DHAVE_LIBCHARSET_H
+       EXTLIBS += $(CHARSET_LIB)
 endif
 
 ifdef HAVE_DEV_TTY

diff --git a/config.mak.in b/config.mak.in
index 10698c8292e639fc5adc4492a4bcac0c82c403bc..b2ba7104ebc87c0f2fe261f16461793fcc8b8cd3 100644 (file)
--- a/config.mak.in
+++ b/config.mak.in
@@ -74,3 +74,4 @@ SNPRINTF_RETURNS_BOGUS=@SNPRINTF_RETURNS_BOGUS@
 NO_PTHREADS=@NO_PTHREADS@
 PTHREAD_CFLAGS=@PTHREAD_CFLAGS@
 PTHREAD_LIBS=@PTHREAD_LIBS@
+CHARSET_LIB=@CHARSET_LIB@

diff --git a/configure.ac b/configure.ac
index 630dbdd19d74fc6ffab529d8d5854043a8f18fd2..24190de616eae048fbd24839259fc8f160c52d21 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -836,6 +836,16 @@ AC_CHECK_HEADER([libcharset.h],
 [HAVE_LIBCHARSET_H=YesPlease],
 [HAVE_LIBCHARSET_H=])
 AC_SUBST(HAVE_LIBCHARSET_H)
+# Define CHARSET_LIB if libiconv does not export the locale_charset symbol
+# and libcharset does
+CHARSET_LIB=
+AC_CHECK_LIB([iconv], [locale_charset],
+       [],
+       [AC_CHECK_LIB([charset], [locale_charset],
+                     [CHARSET_LIB=-lcharset])
+       ]
+)
+AC_SUBST(CHARSET_LIB)
 #
 # Define NO_STRCASESTR if you don't have strcasestr.
 GIT_CHECK_FUNC(strcasestr,