diff options
Diffstat (limited to 'm4/lib-prefix.m4')
| -rw-r--r-- | m4/lib-prefix.m4 | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/m4/lib-prefix.m4 b/m4/lib-prefix.m4 new file mode 100644 index 0000000..9bfd04e --- /dev/null +++ b/m4/lib-prefix.m4 @@ -0,0 +1,120 @@ +# serial 1 + +dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed +dnl to access previously installed libraries. The basic assumption is that +dnl a user will want packages to use other packages he previously installed +dnl with the same --prefix option. +dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate +dnl libraries, but is otherwise very convenient. +AC_DEFUN([AC_LIB_PREFIX], +[ + AC_BEFORE([$0], [AC_LIB_LINKFLAGS]) + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) + AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) + prefix="$acl_final_prefix" eval acl_final_exec_prefix=\"$acl_final_exec_prefix\" + dnl By default, look in $includedir and $libdir. + use_additional=yes + prefix="$acl_final_prefix" exec_prefix="$acl_final_exec_prefix" eval additional_includedir=\"$includedir\" + prefix="$acl_final_prefix" exec_prefix="$acl_final_exec_prefix" eval additional_libdir=\"$libdir\" + AC_ARG_WITH([lib-prefix], +[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib + --without-lib-prefix don't search for libraries in includedir and libdir], +[ + if test "X$withval" = "Xno"; then + use_additional=no + else + if test "X$withval" = "X"; then + prefix="$acl_final_prefix" exec_prefix="$acl_final_exec_prefix" eval additional_includedir=\"$includedir\" + prefix="$acl_final_prefix" exec_prefix="$acl_final_exec_prefix" eval additional_libdir=\"$libdir\" + else + additional_includedir="$withval/include" + additional_libdir="$withval/lib" + fi + fi +]) + if test $use_additional = yes; then + dnl Potentially add $additional_includedir to $CPPFLAGS. + dnl But don't add it + dnl 1. if it's the standard /usr/include, + dnl 2. if it's already present in $CPPFLAGS, + dnl 3. if it's /usr/local/include and we are using GCC on Linux, + dnl 4. if it doesn't exist as a directory. + if test "X$additional_includedir" != "X/usr/include"; then + haveit= + for x in $CPPFLAGS; do + prefix="$acl_final_prefix" exec_prefix="$acl_final_exec_prefix" eval x=\"$x\" + if test "X$x" = "X-I$additional_includedir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test "X$additional_includedir" = "X/usr/local/include"; then + if test -n "$GCC"; then + case $host_os in + linux*) haveit=yes;; + esac + fi + fi + if test -z "$haveit"; then + if test -d "$additional_includedir"; then + dnl Really add $additional_includedir to $CPPFLAGS. + CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir" + fi + fi + fi + fi + dnl Potentially add $additional_libdir to $LDFLAGS. + dnl But don't add it + dnl 1. if it's the standard /usr/lib, + dnl 2. if it's already present in $LDFLAGS, + dnl 3. if it's /usr/local/lib and we are using GCC on Linux, + dnl 4. if it doesn't exist as a directory. + if test "X$additional_libdir" != "X/usr/lib"; then + haveit= + for x in $LDFLAGS; do + prefix="$acl_final_prefix" exec_prefix="$acl_final_exec_prefix" eval x=\"$x\" + if test "X$x" = "X-L$additional_libdir"; then + haveit=yes + break + fi + done + if test -z "$haveit"; then + if test "X$additional_libdir" = "X/usr/local/lib"; then + if test -n "$GCC"; then + case $host_os in + linux*) haveit=yes;; + esac + fi + fi + if test -z "$haveit"; then + if test -d "$additional_libdir"; then + dnl Really add $additional_libdir to $LDFLAGS. + LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir" + fi + fi + fi + fi + fi +]) + +dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix, +dnl acl_final_exec_prefix, containing the values to which $prefix and +dnl $exec_prefix will expand at the end of the configure script. +AC_DEFUN([AC_LIB_PREPARE_PREFIX], +[ + dnl Unfortunately, prefix and exec_prefix get only finally determined + dnl at the end of configure. + if test "X$prefix" = "XNONE"; then + acl_final_prefix="$ac_default_prefix" + else + acl_final_prefix="$prefix" + fi + if test "X$exec_prefix" = "XNONE"; then + acl_final_exec_prefix='${prefix}' + else + acl_final_exec_prefix="$exec_prefix" + fi + prefix="$acl_final_prefix" eval acl_final_exec_prefix=\"$acl_final_exec_prefix\" +]) |