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>

2 files changed, 10 insertions, 1 deletions

diff --git a/configure.ac b/configure.ac
index 359d61bf..60bb8376 100644
--- a/configure.ac
+++ b/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=$ac_cv_sys_file_offset_bits"
+	fi
+fi
+AC_SUBST(LFS_CFLAGS)
+
+
 # Checks for programs.
 AC_PROG_AWK
 AC_PROG_CC_C99
diff --git a/lib/libalpm/libalpm.pc.in b/lib/libalpm/libalpm.pc.in
index fdfc8be6..e4be1741 100644
--- a/lib/libalpm/libalpm.pc.in
+++ b/lib/libalpm/libalpm.pc.in
@@ -7,6 +7,6 @@ Name: libalpm
 Description: Arch Linux package management library
 URL: http://www.archlinux.org/pacman/
 Version: @LIB_VERSION@
-Cflags: -I${includedir}
+Cflags: -I${includedir} @LFS_CFLAGS@
 Libs: -L${libdir} -lalpm
 Libs.private: @LIBS@ @LIBARCHIVE_LIBS@ @LIBSSL_LIBS@ @LIBCURL_LIBS@ @GPGME_LIBS@