From da2b7918e438016aa60e42ed2996f9ffec7132e3 Mon Sep 17 00:00:00 2001 From: Juan Jose Garcia Ripoll Date: Sat, 28 Mar 2009 22:44:21 +0100 Subject: [PATCH] Instead of checking for mprotect, check for header sys/mman.h --- src/configure | 153 ++++++++++++++++++++++++++++++----------------- src/configure.in | 2 +- 2 files changed, 100 insertions(+), 55 deletions(-) diff --git a/src/configure b/src/configure index 1e629b9a1..b2b822f7c 100755 --- a/src/configure +++ b/src/configure @@ -11250,64 +11250,35 @@ fi done -{ echo "$as_me:$LINENO: checking for mprotect" >&5 -echo $ECHO_N "checking for mprotect... $ECHO_C" >&6; } -if test "${ac_cv_func_mprotect+set}" = set; then +if test "${ac_cv_header_sys_mman_h+set}" = set; then + { echo "$as_me:$LINENO: checking for sys/mman.h" >&5 +echo $ECHO_N "checking for sys/mman.h... $ECHO_C" >&6; } +if test "${ac_cv_header_sys_mman_h+set}" = set; then echo $ECHO_N "(cached) $ECHO_C" >&6 +fi +{ echo "$as_me:$LINENO: result: $ac_cv_header_sys_mman_h" >&5 +echo "${ECHO_T}$ac_cv_header_sys_mman_h" >&6; } else - cat >conftest.$ac_ext <<_ACEOF + # Is the header compilable? +{ echo "$as_me:$LINENO: checking sys/mman.h usability" >&5 +echo $ECHO_N "checking sys/mman.h usability... $ECHO_C" >&6; } +cat >conftest.$ac_ext <<_ACEOF /* confdefs.h. */ _ACEOF cat confdefs.h >>conftest.$ac_ext cat >>conftest.$ac_ext <<_ACEOF /* end confdefs.h. */ -/* Define mprotect to an innocuous variant, in case declares mprotect. - For example, HP-UX 11i declares gettimeofday. */ -#define mprotect innocuous_mprotect - -/* System header to define __stub macros and hopefully few prototypes, - which can conflict with char mprotect (); below. - Prefer to if __STDC__ is defined, since - exists even on freestanding compilers. */ - -#ifdef __STDC__ -# include -#else -# include -#endif - -#undef mprotect - -/* Override any GCC internal prototype to avoid an error. - Use char because int might match the return type of a GCC - builtin and then its argument prototype would still apply. */ -#ifdef __cplusplus -extern "C" -#endif -char mprotect (); -/* The GNU C library defines this for functions which it implements - to always fail with ENOSYS. Some functions are actually named - something starting with __ and the normal name is an alias. */ -#if defined __stub_mprotect || defined __stub___mprotect -choke me -#endif - -int -main () -{ -return mprotect (); - ; - return 0; -} +$ac_includes_default +#include _ACEOF -rm -f conftest.$ac_objext conftest$ac_exeext -if { (ac_try="$ac_link" +rm -f conftest.$ac_objext +if { (ac_try="$ac_compile" case "(($ac_try" in *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; *) ac_try_echo=$ac_try;; esac eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 - (eval "$ac_link") 2>conftest.er1 + (eval "$ac_compile") 2>conftest.er1 ac_status=$? grep -v '^ *+' conftest.er1 >conftest.err rm -f conftest.er1 @@ -11316,22 +11287,95 @@ eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 (exit $ac_status); } && { test -z "$ac_c_werror_flag" || test ! -s conftest.err - } && test -s conftest$ac_exeext && - $as_test_x conftest$ac_exeext; then - ac_cv_func_mprotect=yes + } && test -s conftest.$ac_objext; then + ac_header_compiler=yes else echo "$as_me: failed program was:" >&5 sed 's/^/| /' conftest.$ac_ext >&5 - ac_cv_func_mprotect=no + ac_header_compiler=no fi -rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \ - conftest$ac_exeext conftest.$ac_ext +rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext +{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5 +echo "${ECHO_T}$ac_header_compiler" >&6; } + +# Is the header present? +{ echo "$as_me:$LINENO: checking sys/mman.h presence" >&5 +echo $ECHO_N "checking sys/mman.h presence... $ECHO_C" >&6; } +cat >conftest.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF +cat confdefs.h >>conftest.$ac_ext +cat >>conftest.$ac_ext <<_ACEOF +/* end confdefs.h. */ +#include +_ACEOF +if { (ac_try="$ac_cpp conftest.$ac_ext" +case "(($ac_try" in + *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; + *) ac_try_echo=$ac_try;; +esac +eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5 + (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1 + ac_status=$? + grep -v '^ *+' conftest.er1 >conftest.err + rm -f conftest.er1 + cat conftest.err >&5 + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); } >/dev/null && { + test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" || + test ! -s conftest.err + }; then + ac_header_preproc=yes +else + echo "$as_me: failed program was:" >&5 +sed 's/^/| /' conftest.$ac_ext >&5 + + ac_header_preproc=no fi -{ echo "$as_me:$LINENO: result: $ac_cv_func_mprotect" >&5 -echo "${ECHO_T}$ac_cv_func_mprotect" >&6; } -if test $ac_cv_func_mprotect = yes; then + +rm -f conftest.err conftest.$ac_ext +{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5 +echo "${ECHO_T}$ac_header_preproc" >&6; } + +# So? What about this header? +case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in + yes:no: ) + { echo "$as_me:$LINENO: WARNING: sys/mman.h: accepted by the compiler, rejected by the preprocessor!" >&5 +echo "$as_me: WARNING: sys/mman.h: accepted by the compiler, rejected by the preprocessor!" >&2;} + { echo "$as_me:$LINENO: WARNING: sys/mman.h: proceeding with the compiler's result" >&5 +echo "$as_me: WARNING: sys/mman.h: proceeding with the compiler's result" >&2;} + ac_header_preproc=yes + ;; + no:yes:* ) + { echo "$as_me:$LINENO: WARNING: sys/mman.h: present but cannot be compiled" >&5 +echo "$as_me: WARNING: sys/mman.h: present but cannot be compiled" >&2;} + { echo "$as_me:$LINENO: WARNING: sys/mman.h: check for missing prerequisite headers?" >&5 +echo "$as_me: WARNING: sys/mman.h: check for missing prerequisite headers?" >&2;} + { echo "$as_me:$LINENO: WARNING: sys/mman.h: see the Autoconf documentation" >&5 +echo "$as_me: WARNING: sys/mman.h: see the Autoconf documentation" >&2;} + { echo "$as_me:$LINENO: WARNING: sys/mman.h: section \"Present But Cannot Be Compiled\"" >&5 +echo "$as_me: WARNING: sys/mman.h: section \"Present But Cannot Be Compiled\"" >&2;} + { echo "$as_me:$LINENO: WARNING: sys/mman.h: proceeding with the preprocessor's result" >&5 +echo "$as_me: WARNING: sys/mman.h: proceeding with the preprocessor's result" >&2;} + { echo "$as_me:$LINENO: WARNING: sys/mman.h: in the future, the compiler will take precedence" >&5 +echo "$as_me: WARNING: sys/mman.h: in the future, the compiler will take precedence" >&2;} + + ;; +esac +{ echo "$as_me:$LINENO: checking for sys/mman.h" >&5 +echo $ECHO_N "checking for sys/mman.h... $ECHO_C" >&6; } +if test "${ac_cv_header_sys_mman_h+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + ac_cv_header_sys_mman_h=$ac_header_preproc +fi +{ echo "$as_me:$LINENO: result: $ac_cv_header_sys_mman_h" >&5 +echo "${ECHO_T}$ac_cv_header_sys_mman_h" >&6; } + +fi +if test $ac_cv_header_sys_mman_h = yes; then cat >>confdefs.h <<\_ACEOF #define ECL_USE_MPROTECT 1 _ACEOF @@ -11341,6 +11385,7 @@ fi + if test ${with_cxx} = "no" ; then ECL_CC=${CC} diff --git a/src/configure.in b/src/configure.in index fd8a2440e..4127a1b9f 100644 --- a/src/configure.in +++ b/src/configure.in @@ -537,7 +537,7 @@ AC_CHECK_FUNCS( [expf logf sqrtf cosf sinf tanf sinhf coshf tanhf] \ AC_CHECK_FUNCS( [sched_yield uname fseeko] ) -AC_CHECK_FUNC( [mprotect], AC_DEFINE(ECL_USE_MPROTECT) ) +AC_CHECK_HEADER( [sys/mman.h], AC_DEFINE(ECL_USE_MPROTECT) ) dnl ===================================================================== dnl Checks for system services