Skip to contentSkip to conversation

lz4: Fix broken builds when pkg-config is not present but system library is

PATCH In review David Sommerseth 2 participants 2 messages Oct 2, 2017

lore
Share & tools
lore
#0 lore raw

PATCH 1/1 lz4: Fix broken builds when pkg-config is not present but system library is

In commit f91e4863bc1382 we fixed an issue where LZ4_LIBS could be overwritten in some situations. But on systems where lz4 is installed on the system but is lacking pkg-config information, the linker will not know about the lz4 library when completing the build.

This fixes the issue by explicitly setting LZ4_LIBS to contain -llz4 if pkg-config test was run and failed verifying the installed lz4 version number. This also ensures that LZ4_LIBS will not be overwritten if it has been provided on the ./configure command line.

---
 configure.ac | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
configure.ac +3 -1
index 394f5b09..6f59baef 100644
@@ -1093,7 +1093,9 @@ if test "$enable_lz4" = "yes" && test "$enable_comp_stub" = "no"; then
 	PKG_CHECK_MODULES([LZ4],
 			  [liblz4 >= 1.7.1 liblz4 < 100],
 			  [have_lz4="yes"],
-			  [] # If this fails, we will do another test next
+			  [LZ4_LIBS="-llz4"] # If this fails, we will do another test next.
+					     # We also add set LZ4_LIBS otherwise the
+					     # linker will not know about the lz4 library
 	)
     fi
 
Signature · 1 line
2.13.5
#1 lore raw

ACK. Tested locally. Now let's see what MacOS thinks about it :-)

Your patch has been applied to the master and release/2.4 branch.

commit e5b279f1b62e75569ee8d988b55e6ee0dc93464e (master) commit c70a80b1b73d658bfe16225048d95958daf034e7 (release/2.4)

Author: David Sommerseth
Date:   Mon Oct 2 21:07:32 2017 +0200
     lz4: Fix broken builds when pkg-config is not present but system library is

     Signed-off-by: David Sommerseth <[email protected]...>
     Acked-by: Gert Doering <[email protected]...>
     Message-Id: <[email protected]...>
     URL: https://www.mail-archive.com/[email protected]/msg15549.html
     Signed-off-by: Gert Doering <[email protected]...>

--
kind regards,

Gert Doering