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| author | Karel Zak | 2016-06-03 13:37:15 +0200 |
|---|---|---|
| committer | Karel Zak | 2016-06-03 13:37:15 +0200 |
| commit | 2bd0b84f18c935e9d66be545049686ab7646cb9a (patch) | |
| tree | 5747c66321c00eaf66b516e5191cfc994b8fb17e /m4 | |
| parent | cfdisk: use libsmartcols ASCII for non-widechar environment (diff) | |
| download | kernel-qcow2-util-linux-2bd0b84f18c935e9d66be545049686ab7646cb9a.tar.gz kernel-qcow2-util-linux-2bd0b84f18c935e9d66be545049686ab7646cb9a.tar.xz kernel-qcow2-util-linux-2bd0b84f18c935e9d66be545049686ab7646cb9a.zip | |
build-sys: add UL_REQUIRES_COMPILE macro
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ul.m4 | 37 |
1 files changed, 37 insertions, 0 deletions
@@ -248,6 +248,43 @@ AC_DEFUN([UL_REQUIRES_HAVE], [ fi ]) +dnl UL_REQUIRES_HAVE(NAME, PROGRAM_PROLOGUE, PROGRAM_BODY, DESC, [VARSUFFIX=$1]) +dnl +dnl Modifies $build_<name> variable according to $enable_<name> and +dnl ability compile AC_LANG_PROGRAM(<program_prologue>, <program_body>). +dnl +dnl The <desc> is description used for warning/error dnl message (e.g. "foo support"). +dnl +dnl The default <name> for $build_ and $enable_ could be overwrited by option $5. + +AC_DEFUN([UL_REQUIRES_COMPILE], [ + m4_define([suffix], m4_default([$5],$1)) + + if test "x$[build_]suffix" != xno; then + + AC_MSG_CHECKING([$4]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$2], [$3])], + [AC_MSG_RESULT([yes]) + [ul_haveprogram_]suffix=yes], + [AC_MSG_RESULT([no]) + [ul_haveprogram_]suffix=no]) + + case $[enable_]suffix:$[ul_haveprogram_]suffix in #( + no:*) + [build_]suffix=no ;; + yes:yes) + [build_]suffix=yes ;; + yes:*) + AC_MSG_ERROR([$1 selected, but required $4 not available]);; + check:yes) + [build_]suffix=yes ;; + check:*) + AC_MSG_WARN([$4 not found; not building $1]) + [build_]suffix=no ;; + esac + fi +]) + dnl dnl UL_CONFLICTS_BUILD(NAME, ANOTHER, ANOTHERDESC, [VARSUFFIX=$1]) dnl |