diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 63 |
1 files changed, 57 insertions, 6 deletions
diff --git a/configure.in b/configure.in index f8c2482..7c06757 100644 --- a/configure.in +++ b/configure.in @@ -252,9 +252,7 @@ AS_IF([test "$PATH_SEPARATOR" = ';'], [Define to 1 if your system requires backslashes or drive specs in pathnames.]) ]) - # See if the user wants to use pmake's "customs" distributed build capability - AC_SUBST([REMOTE]) REMOTE=stub use_customs=false AC_ARG_WITH([customs], @@ -280,7 +278,6 @@ AC_ARG_WITH([customs], AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true]) # See if the user asked to handle case insensitive file systems. - AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names]) AC_ARG_ENABLE([case-insensitive-file-system], AC_HELP_STRING([--enable-case-insensitive-file-system], @@ -288,7 +285,6 @@ AC_ARG_ENABLE([case-insensitive-file-system], [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])]) # See if we can handle the job server feature, and if the user wants it. - AC_ARG_ENABLE([job-server], AC_HELP_STRING([--disable-job-server], [disallow recursive make communication during -jN]), @@ -324,11 +320,57 @@ AS_CASE([/$make_cv_job_server/$user_job_server/], [Define to 1 to enable job server support in GNU make.]) ]) +# If dl*() functions are supported we can enable the load operation +AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [], + [[#include <dlfcn.h>]]) + +AC_ARG_ENABLE([load], + AC_HELP_STRING([--disable-load], + [disable support for the 'load' operation]), + [make_cv_load="$enableval" user_load="$enableval"], + [make_cv_load="yes"]) + +AS_CASE([/$ac_cv_func_dlopen/$ac_cv_func_dlsym/$ac_cv_func_dlerror/], + [*/no/*], [make_cv_load=no]) + +AS_CASE([/$make_cv_load/$user_load/], + [*/no/*], [make_cv_load=no], + [AC_DEFINE(MAKE_LOAD, 1, + [Define to 1 to enable 'load' support in GNU make.]) + ]) + +# We might need -ldl +AS_IF([test "$make_cv_load" = yes], [ + AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=]) + ]) + +# If we want load support, we might need to link with export-dynamic. +# See if we can figure it out. Unfortunately this is very difficult. +# For example passing -rdynamic to the SunPRO linker gives a warning +# but succeeds and creates a shared object, not an executable! +AS_IF([test "$make_cv_load" = yes], [ + AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic]) + old_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -Wl,--export-dynamic" + AC_LINK_IFELSE([int main(){}], + [AC_MSG_RESULT([yes]) + AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])], + [AC_MSG_RESULT([no]) + AC_MSG_CHECKING([If the linker accepts -rdynamic]) + LDFLAGS="$old_LDFLAGS -rdynamic" + AC_LINK_IFELSE([int main(){}], + [AC_MSG_RESULT([yes]) + AC_SUBST([AM_LDFLAGS], [-rdynamic])], + [AC_MSG_RESULT([no])]) + ]) + LDFLAGS="$old_LDFLAGS" +]) + # if we have both lstat() and readlink() then we can support symlink # timechecks. AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes], -[ AC_DEFINE([MAKE_SYMLINKS], [1], - [Define to 1 to enable symbolic link timestamp checking.]) + [ AC_DEFINE([MAKE_SYMLINKS], [1], + [Define to 1 to enable symbolic link timestamp checking.]) ]) # Find the SCCS commands, so we can include them in our default rules. @@ -458,6 +500,15 @@ AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes], echo ]) +AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes], +[ echo + echo "WARNING: 'load' support requires a POSIX-ish system that" + echo " supports the dlopen(), dlsym(), and dlerror() functions." + echo " Your system doesn't appear to provide one or more of these." + echo " Disabling 'load' support." + echo +]) + # Specify what files are to be created. AC_CONFIG_FILES([Makefile glob/Makefile po/Makefile.in config/Makefile \ doc/Makefile w32/Makefile]) |