[Mesa-dev] [PATCH] configure.ac: use pkg-config for libelf

[Jan Vesely]

On Mon, 2015-11-23 at 14:24 +1100, Jonathan Gray wrote:
> Use PKG_CHECK_MODULES to get the flags to link libelf.

This has been discussed before, and it does not work with elfutils:
http://lists.freedesktop.org/archives/mesa-dev/2014-October/069748.html

Jan

> 
> Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
> Cc: "11.0 11.1" <mesa-stable at lists.freedesktop.org>
> ---
>  configure.ac                           | 4 +---
>  src/gallium/drivers/radeon/Makefile.am | 2 +-
>  src/gallium/targets/opencl/Makefile.am | 2 +-
>  3 files changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 72a2ec1..afee3ed 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1712,7 +1712,7 @@ AC_ARG_WITH([clang-libdir],
>     [CLANG_LIBDIR=''])
>  
>  PKG_CHECK_EXISTS([libclc], [have_libclc=yes], [have_libclc=no])
> -AC_CHECK_LIB([elf], [elf_memory], [have_libelf=yes;ELF_LIB=-lelf])
> +PKG_CHECK_MODULES([LIBELF], [libelf], [have_libelf=yes],
> [have_libelf=no])
>  
>  if test "x$enable_opencl" = xyes; then
>      if test -z "$with_gallium_drivers"; then
> @@ -2293,8 +2293,6 @@ if test "x$USE_VC4_SIMULATOR" = xyes -a
> "x$HAVE_GALLIUM_ILO" = xyes; then
>      AC_MSG_ERROR([VC4 simulator on x86 replaces i965 driver build,
> so ilo must be disabled.])
>  fi
>  
> -AC_SUBST([ELF_LIB])
> -
>  AM_CONDITIONAL(HAVE_LIBDRM, test "x$have_libdrm" = xyes)
>  AM_CONDITIONAL(HAVE_X11_DRIVER, test "x$enable_xlib_glx" = xyes)
>  AM_CONDITIONAL(HAVE_OSMESA, test "x$enable_osmesa" = xyes)
> diff --git a/src/gallium/drivers/radeon/Makefile.am
> b/src/gallium/drivers/radeon/Makefile.am
> index 13d8976..fa2b5a6 100644
> --- a/src/gallium/drivers/radeon/Makefile.am
> +++ b/src/gallium/drivers/radeon/Makefile.am
> @@ -24,7 +24,7 @@ libradeon_la_SOURCES += \
>  libradeon_la_LIBADD = \
>  	$(CLOCK_LIB) \
>  	$(LLVM_LIBS) \
> -	$(ELF_LIB)
> +	$(LIBELF_LIBS)
>  
>  libradeon_la_LDFLAGS = \
>  	$(LLVM_LDFLAGS)
> diff --git a/src/gallium/targets/opencl/Makefile.am
> b/src/gallium/targets/opencl/Makefile.am
> index 08f95e8..99532f0 100644
> --- a/src/gallium/targets/opencl/Makefile.am
> +++ b/src/gallium/targets/opencl/Makefile.am
> @@ -19,7 +19,7 @@ lib at OPENCL_LIBNAME@_la_LIBADD = \
>  	$(top_builddir)/src/gallium/state_trackers/clover/libclover.
> la \
>  	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
>  	$(top_builddir)/src/util/libmesautil.la \
> -	$(ELF_LIB) \
> +	$(LIBELF_LIBS) \
>  	$(DLOPEN_LIBS) \
>  	-lclangCodeGen \
>  	-lclangFrontendTool \
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