Add large file support CFLAGS to pkgconfig file

Large file support is enabled by our configure script as required.  If anything
linking to libalpm does not also define large file support, there will be
differences in the size of off_t which are not caught until runtime.

Add the required CFLAGS to the pkg-config file so that users of libalpm know
what flags are required.

Signed-off-by: Allan McRae <allan@archlinux.org>

configure.ac

@@ -165,6 +165,15 @@ AC_ARG_ENABLE(git-version,
 # testing compilation against gpgme).
 AC_SYS_LARGEFILE
 
+# Record large file flags in pkgconfig file
+if test "$enable_largefile" != no; then
+	if test "$ac_cv_sys_file_offset_bits" != 'no'; then
+		LFS_CFLAGS="-D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits"
+	fi
+fi
+AC_SUBST(LFS_CFLAGS)
+
+
 # Checks for programs.
 AC_PROG_AWK
 AC_PROG_CC_C99

lib/libalpm/libalpm.pc.in

@@ -7,6 +7,6 @@ Name: libalpm
 Description: Arch Linux package management library
 URL: http://www.archlinux.org/pacman/
 Version: @LIB_VERSION@
-Cflags: -I${includedir}
+Cflags: -I${includedir} @LFS_CFLAGS@
 Libs: -L${libdir} -lalpm
 Libs.private: @LIBS@ @LIBARCHIVE_LIBS@ @LIBSSL_LIBS@ @LIBCURL_LIBS@ @GPGME_LIBS@