[gnuastro-commits] master 39ab884: Checking for LZMA library (in XZ Utils) at configure time

[Mohammad Akhlaghi]

branch: master
commit 39ab884ff158ac9be21593dbc251ce03f33ae14a
Author: Mohammad Akhlaghi <address@hidden>
Commit: Mohammad Akhlaghi <address@hidden>

    Checking for LZMA library (in XZ Utils) at configure time
    
    To enable static builds with libtiff, we'll need to check the presence of
    liblzma (part of XZ Utils). But we don't need to abort the configure script
    if its not present.
---
 configure.ac | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b2ca04e..484aff0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -341,7 +341,12 @@ AM_CONDITIONAL([COND_HASLIBJPEG], [test "x$has_libjpeg" = 
"xyes"])
 
 
 
-# Check libtiff:
+# Check libtiff: If an LZMA libray (part of the XZ Utils) is present,
+# libtiff has probably been built with it. So we'll also need to link with
+# the LZMA library. But if libtiff hasn't been linked with it and its
+# present, there is no problem, the linker will just pass over it. So we
+# don't need to stop the build if this fails.
+AC_SEARCH_LIBS([lzma_stream_decoder], [lzma], [], [])
 AC_SEARCH_LIBS([TIFFOpen], [tiff],
                [has_libtiff=yes], [has_libtiff=no; missing_optional_lib=yes])
 AS_IF([test "x$has_libtiff" = "xyes"],