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--- a/src/file.c
+++ b/src/file.c
@@ -45,6 +45,8 @@
#include "prefs.h"
#include "xml.h"
+char gstr[MAXCHAR];
+
/****** load_fitsfiles *******************************************************
PROTO catstruct **load_fitsfiles(char *name, int *ncat, int * outcat,
filenum *filetype, int *headflag)
--- a/src/fits/fitscat.h
+++ b/src/fits/fitscat.h
@@ -333,6 +333,6 @@
warning(char *msg1, char *msg2);
-int bswapflag;
+extern int bswapflag;
#endif
--- a/src/fits/fitscheck.c
+++ b/src/fits/fitscheck.c
@@ -38,6 +38,8 @@
#include "fitscat_defs.h"
#include "fitscat.h"
+int bswapflag;
+
#define ENCODE_OFFSET 0x30
unsigned int exclude[13] = {0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40,
0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60};
--- a/src/globals.h
+++ b/src/globals.h
@@ -30,7 +30,7 @@
#include "types.h"
/*----------------------- miscellaneous variables ---------------------------*/
-char gstr[MAXCHAR];
+extern char gstr[MAXCHAR];
/*------------------------------- functions ---------------------------------*/
extern void makeit(void),
--- a/src/prefs.c
+++ b/src/prefs.c
@@ -50,6 +50,8 @@
#include "prefs.h"
#include "preflist.h"
+prefstruct prefs;
+
/********************************* dumpprefs ********************************/
/*
Print the default preference parameters.
--- a/src/prefs.h
+++ b/src/prefs.h
@@ -84,7 +84,7 @@
double time_diff; /* Execution time */
} prefstruct;
-prefstruct prefs;
+extern prefstruct prefs;
/*----------------------------- Internal constants --------------------------*/
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