From 0c7f1034f20ac87259878c0c45b44d5f67faf3bdfc23ab19ae87f50e1150141d Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Fri, 4 Apr 2025 11:46:06 +0300
Subject: [PATCH] Fix included headers

---
 c/cmd/pp/pp.c          | 21 ++++++++++++++++++++-
 c/compile_flags.txt.do |  3 ++-
 c/conf/cflags          |  1 +
 c/lib/dec.h            |  2 +-
 c/lib/dectai.c         |  1 -
 c/lib/dectai.h         |  3 +--
 c/lib/enctai.h         |  2 +-
 c/lib/schema.h         |  2 +-
 c/lint/iwyu            |  9 +++++++++
 c/lint/iwyu-maps.imp   |  1 +
 10 files changed, 37 insertions(+), 8 deletions(-)
 create mode 100755 c/lint/iwyu

diff --git a/c/cmd/pp/pp.c b/c/cmd/pp/pp.c
index 5cba845..c30d1f1 100644
--- a/c/cmd/pp/pp.c
+++ b/c/cmd/pp/pp.c
@@ -20,12 +20,20 @@
 #include <math.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <time.h>
 #include <unistd.h>
 
+#ifdef __FreeBSD__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreserved-macro-identifier"
+#define __BSD_VISIBLE 1
+#pragma clang diagnostic pop
+#endif
+#include <time.h>
+
 #include <keks/atom.h>
 #include <keks/err.h>
 #include <keks/items.h>
@@ -84,7 +92,10 @@ printer( // NOLINT(misc-no-recursion)
         fputs("  ", stdout);
     } else {
         fprintf(stdout, "%s%zd%s ", ColourBlue, indent, ColourReset);
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wformat-nonliteral"
         fprintf(stdout, OffFmt, ColourRed, items->offsets[idx], ColourReset);
+#pragma clang diagnostic pop
     }
     struct KEKSItem *item = &(items->list[idx]);
     printIndent(indent);
@@ -372,13 +383,21 @@ main(int argc, char **argv)
             KEKSItemsNoOffsets(&items);
         }
         errno = 0;
+#ifdef __FreeBSD__
         if (clock_gettime(CLOCK_MONOTONIC_PRECISE, &started) != 0) {
+#else
+        if (clock_gettime(CLOCK_MONOTONIC, &started) != 0) {
+#endif
             fprintf(stderr, "clock_gettime(started): %s\n", strerror(errno));
             exit(EXIT_FAILURE);
         }
         err = KEKSItemsParse(&items, &off, buf, len);
         errno = 0;
+#ifdef __FreeBSD__
         if (clock_gettime(CLOCK_MONOTONIC_PRECISE, &finished) != 0) {
+#else
+        if (clock_gettime(CLOCK_MONOTONIC, &finished) != 0) {
+#endif
             fprintf(stderr, "clock_gettime(finished): %s\n", strerror(errno));
             exit(EXIT_FAILURE);
         }
diff --git a/c/compile_flags.txt.do b/c/compile_flags.txt.do
index 1b9f125..302dc07 100644
--- a/c/compile_flags.txt.do
+++ b/c/compile_flags.txt.do
@@ -1,3 +1,4 @@
-redo-ifchange conf/prefix
+redo-ifchange conf/cflags conf/prefix
 read PREFIX <conf/prefix
+cat conf/cflags
 printf "%s\n" "-I$PREFIX/include"
diff --git a/c/conf/cflags b/c/conf/cflags
index c761868..3a3994c 100644
--- a/c/conf/cflags
+++ b/c/conf/cflags
@@ -1,4 +1,5 @@
 -std=c99
+-D_POSIX_C_SOURCE=200809L
 -pipe
 -fno-omit-frame-pointer
 -fPIC
diff --git a/c/lib/dec.h b/c/lib/dec.h
index f006492..feca54e 100644
--- a/c/lib/dec.h
+++ b/c/lib/dec.h
@@ -3,7 +3,7 @@
 
 #include <stddef.h>
 
-#include "atom.h"
+#include "atom.h" // IWYU pragma: keep // struct KEKSAtom
 #include "err.h"
 
 // TEXINFO: KEKSAtomDecode
diff --git a/c/lib/dectai.c b/c/lib/dectai.c
index ace0cab..8684bd5 100644
--- a/c/lib/dectai.c
+++ b/c/lib/dectai.c
@@ -13,7 +13,6 @@
 // You should have received a copy of the GNU Lesser General Public
 // License along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-#include <stddef.h>
 #include <stdint.h>
 #include <time.h>
 
diff --git a/c/lib/dectai.h b/c/lib/dectai.h
index 49a69d9..3724578 100644
--- a/c/lib/dectai.h
+++ b/c/lib/dectai.h
@@ -1,8 +1,7 @@
 #ifndef KEKS_DECTAI_H
 #define KEKS_DECTAI_H
 
-#include <stddef.h>
-#include <time.h>
+#include <time.h> // IWYU pragma: keep // struct timespec
 
 #include "err.h"
 
diff --git a/c/lib/enctai.h b/c/lib/enctai.h
index 6bd612d..2ed501c 100644
--- a/c/lib/enctai.h
+++ b/c/lib/enctai.h
@@ -2,7 +2,7 @@
 #define KEKS_ENCTAI_H
 
 #include <stdbool.h>
-#include <time.h>
+#include <time.h> // IWYU pragma: keep // struct timespec
 
 // TEXINFO: KEKSTimespecToTAI64
 // @deftypefun bool KEKSTimespecToTAI64 @
diff --git a/c/lib/schema.h b/c/lib/schema.h
index 1a280a5..502674c 100644
--- a/c/lib/schema.h
+++ b/c/lib/schema.h
@@ -3,7 +3,7 @@
 
 #include <stddef.h>
 
-#include "items.h"
+#include "items.h" // IWYU pragma: keep // struct KEKSItems
 
 // TEXINFO: KEKSSchemaErrType
 // @deftp {Data type} {enum KEKSSchemaErrType}
diff --git a/c/lint/iwyu b/c/lint/iwyu
new file mode 100755
index 0000000..0b249dd
--- /dev/null
+++ b/c/lint/iwyu
@@ -0,0 +1,9 @@
+#!/bin/sh -e
+
+root=${0%/*}
+redo-ifchange $root/../compile_flags.txt
+cflags=$(cat $root/../compile_flags.txt)
+[ $# -eq 0 ] && srcs=*.c || srcs="$@"
+for c in $srcs ; do
+    include-what-you-use $cflags -Xiwyu --mapping_file=$root/iwyu-maps.imp $c 2>&1
+done
diff --git a/c/lint/iwyu-maps.imp b/c/lint/iwyu-maps.imp
index 446e7e9..fd6611b 100644
--- a/c/lint/iwyu-maps.imp
+++ b/c/lint/iwyu-maps.imp
@@ -1,5 +1,6 @@
 [
     { symbol: ["CLOCK_REALTIME", "private", "<time.h>", "public"] },
+    { symbol: ["CLOCK_MONOTONIC_PRECISE", "private", "<time.h>", "public"] },
     { symbol: ["PTRDIFF_MAX", "private", "<stdint.h>", "public"] },
     { symbol: ["SIZE_MAX", "private", "<stdint.h>", "public"] },
 ]
-- 
2.48.1