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m4: Fix Wstrict-prototypes warnings

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This changes the C function prototypes to use void where needed. When
building with CFLAGS=-Werror=strict-prototypes or similar, the libtool's
tests can cause false reports and errors in the log files:

    error: function declaration isn't a prototype

* m4/libtool.m4: Specify void for main function prototypes.
* m4/ltdl.m4: Specify void for main and fnord function prototypes.
This commit is contained in:
Peter Kokot 2024-03-18 01:28:15 +01:00 committed by Ileana Dumitrescu
parent cc511550bb
commit 434a308f46
No known key found for this signature in database
GPG Key ID: 6570EA01146F7354
2 changed files with 8 additions and 8 deletions
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12
m4/libtool.m4 vendored
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@ -1048,7 +1048,7 @@ _LT_EOF
echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD
$RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD
cat > conftest.c << _LT_EOF
int main() { return 0;}
int main(void) { return 0;}
_LT_EOF
echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD
$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
@ -1879,11 +1879,11 @@ else
/* When -fvisibility=hidden is used, assume the code has been annotated
correspondingly for the symbols needed. */
#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
int fnord () __attribute__((visibility("default")));
int fnord (void) __attribute__((visibility("default")));
#endif
int fnord () { return 42; }
int main ()
int fnord (void) { return 42; }
int main (void)
{
void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
int status = $lt_dlunknown;
@ -4060,7 +4060,7 @@ void nm_test_func(void){}
#ifdef __cplusplus
}
#endif
int main(){nm_test_var='a';nm_test_func();return(0);}
int main(void){nm_test_var='a';nm_test_func();return(0);}
_LT_EOF
if AC_TRY_EVAL(ac_compile); then
@ -6232,7 +6232,7 @@ _LT_TAGVAR(objext, $1)=$objext
lt_simple_compile_test_code="int some_variable = 0;"
# Code to be used in simple link tests
lt_simple_link_test_code='int main(){return(0);}'
lt_simple_link_test_code='int main(void){return(0);}'
_LT_TAG_COMPILER
# Save the default compiler, since it gets overwritten when the other

4
m4/ltdl.m4
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@ -758,7 +758,7 @@ AC_CACHE_CHECK([for _ prefix in compiled symbols],
[lt_cv_sys_symbol_underscore=no
cat > conftest.$ac_ext <<_LT_EOF
void nm_test_func(){}
int main(){nm_test_func;return 0;}
int main(void){nm_test_func;return 0;}
_LT_EOF
if AC_TRY_EVAL(ac_compile); then
# Now try to grab the symbols.
@ -862,7 +862,7 @@ _LT_EOF
# define RTLD_NOW 0
# endif
#endif
int main () {
int main (void) {
void *handle = dlopen ("`pwd`/$libname$libltdl_cv_shlibext", RTLD_GLOBAL|RTLD_NOW);
int status = $libltdl_dlunknown;
if (handle) {