diff options
Diffstat (limited to 'c++/configure.in')
| -rw-r--r-- | c++/configure.in | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/c++/configure.in b/c++/configure.in index 92580a8..0fd100a 100644 --- a/c++/configure.in +++ b/c++/configure.in @@ -318,6 +318,45 @@ int main(void) { ]) dnl ---------------------------------------------------------------------- +dnl Is the GNU zlib present? It has a header file `zlib.h' and a library +dnl `-lz' and their locations might be specified with the `--with-zlib' +dnl command-line switch. The value is an include path and/or a library path. +dnl If the library path is specified then it must be preceded by a comma. +dnl + +AC_ARG_WITH(zlib,[ --with-zlib=INC,LIB Use the GNU zlib compression], + ,withval=yes) +case $withval in + yes) + AC_CHECK_HEADERS(zlib.h) + AC_CHECK_LIB(z, compress) + ;; + no) + AC_MSG_CHECKING(for GNU zlib) + AC_MSG_RESULT(suppressed) + ;; + *) + zlib_inc="`echo $withval |cut -f1 -d,`" + if test -n "$zlib_inc"; then + saved_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS -I$zlib_inc" + AC_CHECK_HEADERS(zlib.h,,CPPFLAGS="$saved_CPPFLAGS") + else + AC_CHECK_HEADERS(zlib.h) + fi + + zlib_lib="`echo $withval |cut -f2 -d, -s`" + if test -n "$zlib_lib"; then + saved_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -L$zlib_lib" + AC_CHECK_LIB(z, compress,,LDFLAGS="$saved_LDFLAGS") + else + AC_CHECK_LIB(z, compress) + fi + ;; +esac + +dnl ---------------------------------------------------------------------- dnl Checks for header files. dnl |