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- --- a/configure.ac
- +++ b/configure.ac
- @@ -1077,68 +1077,15 @@ dnl
- AC_ARG_VAR([LZ4_CFLAGS], [C compiler flags for lz4])
- AC_ARG_VAR([LZ4_LIBS], [linker flags for lz4])
- if test "$enable_lz4" = "yes" && test "$enable_comp_stub" = "no"; then
- - if test -z "${LZ4_CFLAGS}" -a -z "${LZ4_LIBS}"; then
- - # if the user did not explicitly specify flags, try to autodetect
- - PKG_CHECK_MODULES([LZ4],
- - [liblz4 >= 1.7.1 liblz4 < 100],
- - [have_lz4="yes"],
- - [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
- saved_CFLAGS="${CFLAGS}"
- saved_LIBS="${LIBS}"
- CFLAGS="${CFLAGS} ${LZ4_CFLAGS}"
- LIBS="${LIBS} ${LZ4_LIBS}"
- - # If pkgconfig check failed or LZ4_CFLAGS/LZ4_LIBS env vars
- - # are used, check the version directly in the LZ4 include file
- - if test "${have_lz4}" != "yes"; then
- - AC_CHECK_HEADERS([lz4.h],
- - [have_lz4h="yes"],
- - [])
- -
- - if test "${have_lz4h}" = "yes" ; then
- - AC_MSG_CHECKING([additionally if system LZ4 version >= 1.7.1])
- - AC_COMPILE_IFELSE(
- - [AC_LANG_PROGRAM([[
- -#include <lz4.h>
- - ]],
- - [[
- -/* Version encoding: MMNNPP (Major miNor Patch) - see lz4.h for details */
- -#if LZ4_VERSION_NUMBER < 10701L
- -#error LZ4 is too old
- -#endif
- - ]]
- - )],
- - [
- - AC_MSG_RESULT([ok])
- - have_lz4="yes"
- - ],
- - [AC_MSG_RESULT([system LZ4 library is too old])]
- - )
- - fi
- - fi
- -
- - # Double check we have a few needed functions
- - if test "${have_lz4}" = "yes" ; then
- - AC_CHECK_LIB([lz4],
- - [LZ4_compress_default],
- - [],
- - [have_lz4="no"])
- - AC_CHECK_LIB([lz4],
- - [LZ4_decompress_safe],
- - [],
- - [have_lz4="no"])
- - fi
- -
- - if test "${have_lz4}" != "yes" ; then
- - AC_MSG_RESULT([ usable LZ4 library or header not found, using version in src/compat/compat-lz4.*])
- - AC_DEFINE([NEED_COMPAT_LZ4], [1], [use copy of LZ4 source in compat/])
- - LZ4_LIBS=""
- - fi
- + AC_MSG_RESULT([ usable LZ4 library or header not found, using version in src/compat/compat-lz4.*])
- + AC_DEFINE([NEED_COMPAT_LZ4], [1], [use copy of LZ4 source in compat/])
- + LZ4_LIBS=""
- OPTIONAL_LZ4_CFLAGS="${LZ4_CFLAGS}"
- OPTIONAL_LZ4_LIBS="${LZ4_LIBS}"
- AC_DEFINE(ENABLE_LZ4, [1], [Enable LZ4 compression library])
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