[X2Go-Commits] [nx-libs] 02/38: m4/nx-macros.m4: add NX_TARGET_USE_ELF macro, setting TARGET_ELF automake conditional if target compiler is generating ELF binaries.

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x2go pushed a commit to branch 3.6.x
in repository nx-libs.

commit be1ae7087f6e8aa3cb7b38e1c0717198c218efe9
Author: Mihai Moldovan <ionic at ionic.de>
Date:   Sun Feb 25 04:32:15 2018 +0100

    m4/nx-macros.m4: add NX_TARGET_USE_ELF macro, setting TARGET_ELF automake conditional if target compiler is generating ELF binaries.
---
 m4/nx-macros.m4 | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/m4/nx-macros.m4 b/m4/nx-macros.m4
index 1c0e1ea..81d6ea1 100644
--- a/m4/nx-macros.m4
+++ b/m4/nx-macros.m4
@@ -407,6 +407,23 @@ FreeBSD=
 test "$nxconf_cv_freebsd" = yes && FreeBSD=yes
 ]) # NX_BUILD_ON_FreeBSD
 
+# Check to see if we're generating binaries in ELF format.
+
+AC_DEFUN([NX_TARGET_USE_ELF],
+[AC_CACHE_CHECK([if target system is ELF-based], [nxconf_cv_targetelf],
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+#ifndef __ELF__
+#error not an ELF-based system
+error!
+#endif
+]],
+[[
+]])],
+[nxconf_cv_targetelf=yes], [nxconf_cv_targetelf=no])])
+AM_CONDITIONAL([TARGET_ELF], [test x"$nxconf_cv_targetelf" = "xyes"])
+]) # NX_TARGET_USE_ELF
+
 AC_DEFUN([LIBJPEG_FALLBACK_CHECK],[
 AC_MSG_CHECKING([for libjpeg shared libary file and headers])
 AC_CHECK_LIB([jpeg], [jpeg_destroy_compress],

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