626632f933
Related to: <https://fedoraproject.org/wiki/Changes/PortingToModernC> <https://fedoraproject.org/wiki/Toolchain/PortingToModernC>
61 lines
1.7 KiB
Diff
61 lines
1.7 KiB
Diff
Avoid implicit ints and implicit function declarations, to prevent
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build failures with future compilers.
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It's not clear if old compilers really use <stdio.h> for the exit
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function. Most of these checks would be better served by using
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#error, so that they can use AC_TRY_LINK and be compatible with
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cross-compilation.
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Submitted upstream:
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<https://lists.ibr.cs.tu-bs.de/hyperkitty/list/libsmi@ibr.cs.tu-bs.de/thread/MI6XPAR7JE2AY6UZIMXA3Q7JGD635JRR/>
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diff --git a/configure.in b/configure.in
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index 9b678e2d915a789d..c032538163bd05ab 100644
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--- a/configure.in
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+++ b/configure.in
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@@ -42,8 +42,8 @@ AC_ARG_WITH(cc,
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CC="$withval")
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AC_MSG_CHECKING([for additional required compiler flags])
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-AC_TRY_RUN([#include <stdio.h>
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- main() {
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+AC_TRY_RUN([#include <stdlib.h>
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+ int main(void) {
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#ifdef __SUNPRO_C
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exit(0);
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#else
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@@ -100,8 +100,8 @@ dirseparator="$withval", dirseparator="")
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AC_MSG_CHECKING([for path separator character])
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if test "$pathseparator" = "" ; then
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- AC_TRY_RUN([#include <stdio.h>
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- main() {
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+ AC_TRY_RUN([#include <stdlib.h>
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+ int main(void) {
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#ifdef _WIN32
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exit(0);
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#else
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@@ -114,8 +114,8 @@ echo $pathseparator
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AC_MSG_CHECKING([for dir separator character])
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if test "$dirseparator" = "" ; then
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- AC_TRY_RUN([#include <stdio.h>
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- main() {
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+ AC_TRY_RUN([#include <stdlib.h>
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+ int main(void) {
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#ifdef _WIN32
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exit(0);
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#else
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@@ -140,8 +140,8 @@ AC_MSG_CHECKING([for 64 bit types])
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# "warning: decimal constant is so large that it is unsigned"
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# if used with the (correct) value -9223372036854775808LL.
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#
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-AC_TRY_RUN([#include <stdio.h>
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- main() {
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+AC_TRY_RUN([#include <stdlib.h>
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+ int main(void) {
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long long ll;
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unsigned long long ull;
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exit(0);
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