Remove cmake checks for C89 headers.

These are roughly equivalent to autoconf's AC_HEADER_STDC and even they
say that macro is obsolescent.

strings.h is not really a C89 header, but it defined some things that
are no longer needed [1]. And no file actually #includes it.

[1] https://stackoverflow.com/a/4291328

4 files changed, 0 insertions, 33 deletions

diff --git a/CMakeScripts/ConfigChecks.cmake b/CMakeScripts/ConfigChecks.cmake
index dd90eab65..b1e24fc08 100644
--- a/CMakeScripts/ConfigChecks.cmake
+++ b/CMakeScripts/ConfigChecks.cmake
@@ -19,8 +19,6 @@ CHECK_FUNCTION_EXISTS(fpsetmask HAVE_FPSETMASK)
 CHECK_FUNCTION_EXISTS(gettimeofday HAVE_GETTIMEOFDAY)
 CHECK_INCLUDE_FILES(ieeefp.h HAVE_IEEEFP_H)
 CHECK_INCLUDE_FILES(inttypes.h HAVE_INTTYPES_H)
-CHECK_INCLUDE_FILES(locale.h HAVE_LC_MESSAGES)
-CHECK_INCLUDE_FILES(locale.h HAVE_LOCALE_H)
 CHECK_INCLUDE_FILES(fcntl.h HAVE_FCNTL_H)
 CHECK_FUNCTION_EXISTS(mallinfo HAVE_MALLINFO)
 CHECK_INCLUDE_FILES(malloc.h HAVE_MALLOC_H)
@@ -29,11 +27,7 @@ CHECK_INCLUDE_FILES(memory.h HAVE_MEMORY_H)
 CHECK_FUNCTION_EXISTS(memset HAVE_MEMSET)
 CHECK_FUNCTION_EXISTS(pow HAVE_POW)
 CHECK_FUNCTION_EXISTS(sqrt HAVE_SQRT)
-CHECK_INCLUDE_FILES(stddef.h HAVE_STDDEF_H)
 CHECK_INCLUDE_FILES(stdint.h HAVE_STDINT_H)
-CHECK_INCLUDE_FILES(stdlib.h HAVE_STDLIB_H)
-CHECK_INCLUDE_FILES(strings.h HAVE_STRINGS_H)
-CHECK_INCLUDE_FILES(string.h HAVE_STRING_H)
 CHECK_FUNCTION_EXISTS(strpbrk HAVE_STRPBRK)
 CHECK_FUNCTION_EXISTS(strrchr HAVE_STRRCHR)
 CHECK_FUNCTION_EXISTS(strspn HAVE_STRSPN)
diff --git a/config.h.cmake b/config.h.cmake
index 5d5d27c93..1dffd4f21 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -82,15 +82,9 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #cmakedefine HAVE_INTTYPES_H 1
 
-/* Define if your <locale.h> file defines LC_MESSAGES. */
-#cmakedefine HAVE_LC_MESSAGES 1
-
 /* Define to 1 if you have the `m' library (-lm). */
 #cmakedefine HAVE_LIBM 1
 
-/* Define to 1 if you have the <locale.h> header file. */
-#cmakedefine HAVE_LOCALE_H 1
-
 /* Define to 1 if you have the `mallinfo' function. */
 #cmakedefine HAVE_MALLINFO 1
 
@@ -137,24 +131,12 @@
    zero-length file name argument. */
 #cmakedefine HAVE_STAT_EMPTY_STRING_BUG 1
 
-/* Define to 1 if you have the <stddef.h> header file. */
-#cmakedefine HAVE_STDDEF_H 1
-
 /* Define to 1 if you have the <stdint.h> header file. */
 #cmakedefine HAVE_STDINT_H 1
 
-/* Define to 1 if you have the <stdlib.h> header file. */
-#cmakedefine HAVE_STDLIB_H 1
-
 /* Define to 1 if you have the `strftime' function. */
 #cmakedefine HAVE_STRFTIME 1
 
-/* Define to 1 if you have the <strings.h> header file. */
-#cmakedefine HAVE_STRINGS_H 1
-
-/* Define to 1 if you have the <string.h> header file. */
-#cmakedefine HAVE_STRING_H 1
-
 /* Define to 1 if you have the `strpbrk' function. */
 #cmakedefine HAVE_STRPBRK 1
 
@@ -243,9 +225,6 @@
 /* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */
 #cmakedefine STAT_MACROS_BROKEN 1
 
-/* Define to 1 if you have the ANSI C header files. */
-#cmakedefine STDC_HEADERS 1
-
 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
 #cmakedefine TIME_WITH_SYS_TIME 1
 
diff --git a/src/trace/trace.h b/src/trace/trace.h
index f562e89aa..4bf13123b 100644
--- a/src/trace/trace.h
+++ b/src/trace/trace.h
@@ -13,9 +13,7 @@
 # include "config.h"
 #endif
 
-#ifdef HAVE_STRING_H
 # include <string.h>
-#endif
 
 #include <glibmm/refptr.h>
 #include <gdkmm/pixbuf.h>
diff --git a/src/xml/repr-util.cpp b/src/xml/repr-util.cpp
index 4d093a4ea..6da1233db 100644
--- a/src/xml/repr-util.cpp
+++ b/src/xml/repr-util.cpp
@@ -17,13 +17,9 @@
 
 #include "config.h"
 
-#if HAVE_STRING_H
 # include <cstring>
-#endif
 
-#if HAVE_STDLIB_H
 # include <cstdlib>
-#endif
 
 
 #include <glib.h>