From e7dca73eb4f41b2e8151e01429db97b5c138e3de Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 6 May 2025 22:58:48 -0400
Subject: [PATCH 1/3] iodbc/connect.c: include time.h for the time() function

Without this the build can fail on musl:

  connect.c: In function '_iodbcdm_pool_set_retry_wait':
  connect.c:489:25: error: implicit declaration of function 'time'
  [-Wimplicit-function-declaration]
  489 |   pdbc->cp_retry_wait = time(NULL) + retry_wait;
      |                         ^~~~

Presumably glibc includes time.h incidentally via some other header.
---
 iodbc/connect.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/iodbc/connect.c b/iodbc/connect.c
index 641c2377..75aeaedd 100644
--- a/iodbc/connect.c
+++ b/iodbc/connect.c
@@ -83,6 +83,7 @@
 #include <sqlucode.h>
 #include <iodbcext.h>
 #include <odbcinst.h>
+#include <time.h>
 
 #include "dlproc.h"
 

From 19c83ac53e6188dc693d66e3c0e370109f490658 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 6 May 2025 23:02:02 -0400
Subject: [PATCH 2/3] include/iodbc.h: include strings.h for the strcasecmp()
 function

Without this, the build can fail on musl:

  info.c: In function 'SQLDrivers_Internal':
  ../include/iodbc.h:117:34: error: implicit declaration of function
  'strcasecmp'; did you mean 'wcscasecmp'?
  [-Wimplicit-function-declaration]
  117 | #define STRCASEEQ(a, b) (strcasecmp((char*)(a), (char*)(b)) == 0)
      |                          ^~~~~~~~~~

Presumably glibc includes strings.h incidentally via some other
header.
---
 include/iodbc.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/iodbc.h b/include/iodbc.h
index 5d9fc12c..a5df482e 100644
--- a/include/iodbc.h
+++ b/include/iodbc.h
@@ -101,6 +101,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <strings.h>
 #include <sys/types.h>
 
 #define MEM_ALLOC(size)	(malloc((size_t)(size)))

From 00829385f0b83b943e8cb09bece70d26316903d9 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Tue, 6 May 2025 23:08:31 -0400
Subject: [PATCH 3/3] include/iodbc.h: define _POSIX_C_SOURCE=200809L for
 strdup()

Without this, the build can fail on musl:

  SQLGetInstalledDrivers.c: In function 'SQLGetInstalledDrivers_Internal':
  ../include/iodbc.h:117:34: error: implicit declaration of function
  'strdup'; did you mean 'strcmp'? [-Wimplicit-function-declaration]
  117 | #define STRDUP(t)               (strdup((char*)(t)))
      |                                  ^~~~~~
---
 include/iodbc.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/iodbc.h b/include/iodbc.h
index a5df482e..11ad2c2e 100644
--- a/include/iodbc.h
+++ b/include/iodbc.h
@@ -98,6 +98,11 @@
 #if	!defined(WINDOWS) && !defined(WIN32_SYSTEM)
 #define _UNIX_
 
+#ifndef _POSIX_C_SOURCE
+/* POSIX.1-2008 is required for strdup() */
+#define _POSIX_C_SOURCE 200809L
+#endif
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>