gnucash/macros/binreloc.m4
Christian Stimming 5ad71286b7 Fix relocation support detection that was broken with autoconf-2.60.
git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@15457 57a11ea4-9604-0410-9ed3-97b8803252fd
2007-01-28 21:44:21 +00:00

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# Check for binary relocation support.
# Written by Hongli Lai
# http://autopackage.org/
AC_DEFUN([AM_BINRELOC],
[
AC_ARG_ENABLE(binreloc,
[ --enable-binreloc compile with binary relocation support
(default=enable when available)],
enable_binreloc=$enableval,enable_binreloc=auto)
AC_ARG_ENABLE(binreloc-threads,
[ --enable-binreloc-threads compile binary relocation with threads support
(default=yes)],
enable_binreloc_threads=$enableval,enable_binreloc_threads=yes)
BINRELOC_CFLAGS=
BINRELOC_LIBS=
if test "x$enable_binreloc" = "xauto"; then
AC_CHECK_FILE([/proc/self/maps])
AC_CACHE_CHECK([whether everything is installed to the same prefix],
[br_cv_valid_prefixes], [
# datarootdir variables was introduced with autoconf-2.60
if test "$bindir" = '${exec_prefix}/bin' -a "$sbindir" = '${exec_prefix}/sbin' -a \
\( "$datadir" = '${prefix}/share' -o \( "$datadir" = '${datarootdir}' -a "$datarootdir" = '${prefix}/share' \) \) -a \
"$libdir" = '${exec_prefix}/lib' -a \
"$libexecdir" = '${exec_prefix}/libexec' -a "$sysconfdir" = '${prefix}/etc'
then
br_cv_valid_prefixes=yes
else
br_cv_valid_prefixes=no
fi
])
fi
AC_CACHE_CHECK([whether binary relocation support should be enabled],
[br_cv_binreloc],
[if test "x$enable_binreloc" = "xyes"; then
br_cv_binreloc=yes
elif test "x$enable_binreloc" = "xauto"; then
if test "x$br_cv_valid_prefixes" = "xyes" -a \
"x$ac_cv_file__proc_self_maps" = "xyes"; then
br_cv_binreloc=yes
else
br_cv_binreloc=no
fi
else
br_cv_binreloc=no
fi])
if test "x$br_cv_binreloc" = "xyes"; then
BINRELOC_CFLAGS="-DENABLE_BINRELOC"
AC_DEFINE(ENABLE_BINRELOC,,[Use binary relocation?])
if test "x$enable_binreloc_threads" = "xyes"; then
AC_CHECK_LIB([pthread], [pthread_getspecific])
fi
AC_CACHE_CHECK([whether binary relocation should use threads],
[br_cv_binreloc_threads],
[if test "x$enable_binreloc_threads" = "xyes"; then
if test "x$ac_cv_lib_pthread_pthread_getspecific" = "xyes"; then
br_cv_binreloc_threads=yes
else
br_cv_binreloc_threads=no
fi
else
br_cv_binreloc_threads=no
fi])
if test "x$br_cv_binreloc_threads" = "xyes"; then
BINRELOC_LIBS="-lpthread"
AC_DEFINE(BR_PTHREAD,1,[Include pthread support for binary relocation?])
else
BINRELOC_CFLAGS="$BINRELOC_CFLAGS -DBR_PTHREADS=0"
AC_DEFINE(BR_PTHREAD,0,[Include pthread support for binary relocation?])
fi
fi
AC_SUBST(BINRELOC_CFLAGS)
AC_SUBST(BINRELOC_LIBS)
])