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CMakeLists.txt: update test for _GNU_SOURCE to fix warnings 

../asc2log.c:264:8: warning: implicit declaration of function 'strcasestr' is invalid in C99 [-Wimplicit-function-declaration]
        ptr = strcasestr(buf, tmp1);
              ^
../asc2log.c:264:6: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion]
        ptr = strcasestr(buf, tmp1);
            ^ ~~~~~~~~~~~~~~~~~~~~~
../asc2log.c:328:6: warning: implicit declaration of function 'strcasestr' is invalid in C99 [-Wimplicit-function-declaration]
        if (strcasestr(date, " pm ") != NULL) {
            ^
../asc2log.c:328:31: warning: comparison between pointer and integer ('int' and 'void *') [-Wpointer-integer-compare]
        if (strcasestr(date, " pm ") != NULL) {
            ~~~~~~~~~~~~~~~~~~~~~~~~ ^  ~~~~
../asc2log.c:336:8: warning: implicit declaration of function 'strptime' is invalid in C99 [-Wimplicit-function-declaration]
                if (!strptime(date, "%B %d %I:%M:%S %p %Y", &tms)) {
                     ^
../asc2log.c:354:8: warning: implicit declaration of function 'strptime' is invalid in C99 [-Wimplicit-function-declaration]
                if (!strptime(date, "%B %d %H:%M:%S %Y", &tms)) {

../slcanpty.c:476:7: warning: implicit declaration of function 'grantpt' is invalid in C99 [-Wimplicit-function-declaration]
                if (grantpt(p) < 0) {
                    ^
../slcanpty.c:481:7: warning: implicit declaration of function 'unlockpt' is invalid in C99 [-Wimplicit-function-declaration]
                if (unlockpt(p) < 0) {
                    ^
../slcanpty.c:486:14: warning: implicit declaration of function 'ptsname' is invalid in C99 [-Wimplicit-function-declaration]
                name_pts = ptsname(p);
                           ^
../slcanpty.c:486:12: warning: incompatible integer to pointer conversion assigning to 'char *' from 'int' [-Wint-conversion]
                name_pts = ptsname(p);
                         ^ ~~~~~~~~~~

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
pull/225/head
Marc Kleine-Budde 2020-06-22 12:46:19 +02:00
parent a5c049d37a
commit 8e3c050b1c
1 changed files with 3 additions and 1 deletions
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4
CMakeLists.txt
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@ -2,13 +2,15 @@ cmake_minimum_required(VERSION 3.3)
project(can-utils LANGUAGES C)
include (CheckSymbolExists)
include (GNUInstallDirs)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
check_symbol_exists(__GNU_LIBRARY__ "features.h" _GNU_SOURCE)
if(_GNU_SOURCE)
add_definitions(-D_GNU_SOURCE)
endif()