configure: Drop unnecessary gperf version check
authorTobias Brunner <tobias@strongswan.org>
Thu, 5 Dec 2019 14:50:12 +0000 (15:50 +0100)
committerTobias Brunner <tobias@strongswan.org>
Fri, 6 Dec 2019 09:30:52 +0000 (10:30 +0100)
While the check probably made sense when strongSwan 4.x was started, gperf
version 3.0.1 was released in 2003, so it's very unlikely that version 2.x
is still around anywhere.

configure.ac

index 83918ad..813fcd9 100644 (file)
@@ -379,28 +379,24 @@ AC_PATH_PROG([GPERF], [gperf], [], [$PATH:/bin:/usr/bin:/usr/local/bin])
 AC_ARG_VAR([GPERF], [the GNU gperf program])
 
 # because gperf is not needed by end-users we only abort if generated files don't exist
-AC_MSG_CHECKING([gperf version >= 3.0.0])
+AC_MSG_CHECKING([gperf len type])
 if test -x "$GPERF"; then
-       if test "`$GPERF --version | $AWK -F' ' '/^GNU gperf/ { print $3 }' | $AWK -F. '{ print $1 }'`" -ge "3"; then
-               GPERF_OUTPUT="`echo foo | ${GPERF}`"
-               AC_COMPILE_IFELSE(
+       GPERF_OUTPUT="`echo foo | ${GPERF}`"
+       AC_COMPILE_IFELSE(
+               [AC_LANG_PROGRAM(
+                       [[#include <string.h>
+                         const char *in_word_set(const char*, size_t); $GPERF_OUTPUT]])],
+               [GPERF_LEN_TYPE=size_t],
+               [AC_COMPILE_IFELSE(
                        [AC_LANG_PROGRAM(
                                [[#include <string.h>
-                                 const char *in_word_set(const char*, size_t); $GPERF_OUTPUT]])],
-                       [GPERF_LEN_TYPE=size_t],
-                       [AC_COMPILE_IFELSE(
-                               [AC_LANG_PROGRAM(
-                                       [[#include <string.h>
-                                         const char *in_word_set(const char*, unsigned); $GPERF_OUTPUT]])],
-                               [GPERF_LEN_TYPE=unsigned],
-                               [AC_MSG_ERROR([unable to determine gperf len type])]
-                       )]
-               )
-               AC_SUBST(GPERF_LEN_TYPE)
-               AC_MSG_RESULT([yes])
-       else
-               AC_MSG_RESULT([no])
-       fi
+                                 const char *in_word_set(const char*, unsigned); $GPERF_OUTPUT]])],
+                       [GPERF_LEN_TYPE=unsigned],
+                       [AC_MSG_ERROR([unable to determine gperf len type])]
+               )]
+       )
+       AC_SUBST(GPERF_LEN_TYPE)
+       AC_MSG_RESULT([$GPERF_LEN_TYPE])
 else
        AC_MSG_RESULT([not found])
        GPERF_TEST_FILE="$srcdir/src/libstrongswan/crypto/proposal/proposal_keywords_static.c"