C++ and C do this differently - fix C build.

src/liboptical/turb.c

@@ -19,7 +19,7 @@
  * created this table so we could create a substantially bigger one
  * while retaining these 20x20x20 values for backwards-compatibility.
  */
-extern const fastf_t turb_table[20][20][20] = {
+EXTERNVARINIT const fastf_t turb_table[20][20][20] = {
     {{ 0.105489192064851520, -0.203732953406870370, -0.001023580785840750, -0.418433680199086670,
        0.019490496721118689, -0.494057352188974620,  0.379220851697027680, -0.381280504632741210,
        0.073469225782901049, -0.087082616984844208, -0.120197215583175420,  0.007280763704329729,

src/librt/constraint.c

@@ -39,7 +39,7 @@
 #include "raytrace.h"
 
 
-extern const struct bu_structparse rt_constraint_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_constraint_parse[] = {
     {"%d", 1, "ID", bu_offsetof(struct rt_constraint_internal, id), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},
     {"%d", 1, "N", bu_offsetof(struct rt_constraint_internal, type), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},
     {"%V", 1, "Ex", bu_offsetof(struct rt_constraint_internal, expression), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},

src/librt/primitives/arb8/arb8.c

@@ -167,7 +167,7 @@ static const int rt_arb_planes[5][24] = {
 
 #define ARB_AO(_t, _a, _i) offsetof(_t, _a) + sizeof(point_t) * _i + sizeof(point_t) / ELEMENTS_PER_POINT * X
 
-extern const struct bu_structparse rt_arb_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_arb_parse[] = {
     { "%f", 3, "V1", ARB_AO(struct rt_arb_internal, pt, 0), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "V2", ARB_AO(struct rt_arb_internal, pt, 1), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "V3", ARB_AO(struct rt_arb_internal, pt, 2), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/cline/cline.c

@@ -54,7 +54,7 @@ struct cline_specific {
 
 #define RT_CLINE_O(m) bu_offsetof(struct rt_cline_internal, m)
 
-extern const struct bu_structparse rt_cline_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_cline_parse[] = {
     { "%f", 3, "V", RT_CLINE_O(v),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H", RT_CLINE_O(h),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 1, "r", RT_CLINE_O(radius), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/dsp/dsp.c

@@ -296,7 +296,7 @@ const struct bu_structparse dsp_v4_parse[] = {
 
 
 /* only used on v5 database */
-extern const struct bu_structparse rt_dsp_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_dsp_parse[] = {
     {"%V",  1, "file", DSP_O(dsp_name), hook_file, NULL, NULL },
     {"%V",  1, "name", DSP_O(dsp_name), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%c",  1, "src", DSP_O(dsp_datasrc), hook_verify, NULL, NULL },

src/librt/primitives/ebm/ebm.c

@@ -62,7 +62,7 @@ struct rt_ebm_specific {
 
 #define RT_EBM_O(m) bu_offsetof(struct rt_ebm_internal, m)
 
-extern const struct bu_structparse rt_ebm_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_ebm_parse[] = {
     {"%s",	RT_EBM_NAME_LEN, "file", bu_offsetof(struct rt_ebm_internal, name), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%s",	RT_EBM_NAME_LEN, "name", bu_offsetof(struct rt_ebm_internal, name), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%c",	1, "src",	RT_EBM_O(datasrc),	BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/ehy/ehy.c

@@ -175,7 +175,7 @@ struct ehy_specific {
 };
 
 
-extern const struct bu_structparse rt_ehy_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_ehy_parse[] = {
     { "%f", 3, "V",   bu_offsetofarray(struct rt_ehy_internal, ehy_V, fastf_t, X),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H",   bu_offsetofarray(struct rt_ehy_internal, ehy_H, fastf_t, X),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "A",   bu_offsetofarray(struct rt_ehy_internal, ehy_Au, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/ell/ell.c

@@ -45,7 +45,7 @@
 extern int rt_sph_prep(struct soltab *stp, struct rt_db_internal *ip,
 		       struct rt_i *rtip);
 
-extern const struct bu_structparse rt_ell_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_ell_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_ell_internal, v, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "A", bu_offsetofarray(struct rt_ell_internal, a, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "B", bu_offsetofarray(struct rt_ell_internal, b, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/epa/epa.c

@@ -175,7 +175,7 @@ struct epa_specific {
 };
 
 
-extern const struct bu_structparse rt_epa_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_epa_parse[] = {
     { "%f", 3, "V",   bu_offsetofarray(struct rt_epa_internal, epa_V, fastf_t, X),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H",   bu_offsetofarray(struct rt_epa_internal, epa_H, fastf_t, X),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "A",   bu_offsetofarray(struct rt_epa_internal, epa_Au, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/eto/eto.c

@@ -141,7 +141,7 @@ struct eto_specific {
 };
 
 
-extern const struct bu_structparse rt_eto_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_eto_parse[] = {
     { "%f", 3, "V",   bu_offsetofarray(struct rt_eto_internal, eto_V, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "N",   bu_offsetofarray(struct rt_eto_internal, eto_N, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "C",   bu_offsetofarray(struct rt_eto_internal, eto_C, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/grip/grip.c

@@ -57,7 +57,7 @@ struct grip_specific {
 };
 #define GRIP_NULL ((struct grip_specific *)0)
 
-extern const struct bu_structparse rt_grp_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_grp_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_grip_internal, center, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "N", bu_offsetofarray(struct rt_grip_internal, normal, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 1, "L", bu_offsetof(struct rt_grip_internal, mag), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/half/half.c

@@ -60,7 +60,7 @@ struct half_specific {
 };
 #define HALF_NULL ((struct half_specific *)0)
 
-extern const struct bu_structparse rt_hlf_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_hlf_parse[] = {
     { "%f", 3, "N", bu_offsetofarray(struct rt_half_internal, eqn, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 1, "d", bu_offsetofarray(struct rt_half_internal, eqn, fastf_t, W), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { {'\0', '\0', '\0', '\0'}, 0, (char *)NULL, 0, BU_STRUCTPARSE_FUNC_NULL, NULL, NULL }

src/librt/primitives/hf/hf.c

@@ -63,7 +63,7 @@
 #define HF_O(m) bu_offsetof(struct rt_hf_internal, m)
 
 /* All fields valid in string solid */
-extern const struct bu_structparse rt_hf_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_hf_parse[] = {
     {"%s",	128,	"cfile",	HF_O(cfile), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},
     {"%s",	128,	"dfile",	HF_O(dfile), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},
     {"%s",	8,	"fmt",		HF_O(fmt), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},

src/librt/primitives/hrt/hrt.c

@@ -125,7 +125,7 @@
 #include "../../librt_private.h"
 
 
-extern const struct bu_structparse rt_hrt_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_hrt_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_hrt_internal, v, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "X", bu_offsetofarray(struct rt_hrt_internal, xdir, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "Y", bu_offsetofarray(struct rt_hrt_internal, ydir, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/hyp/hyp.c

@@ -105,7 +105,7 @@ hyp_internal_to_specific(struct rt_hyp_internal *hyp_in) {
 }
 
 
-extern const struct bu_structparse rt_hyp_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_hyp_parse[] = {
     { "%f", 3, "V",   bu_offsetofarray(struct rt_hyp_internal, hyp_Vi, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H",   bu_offsetofarray(struct rt_hyp_internal, hyp_Hi, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "A",   bu_offsetofarray(struct rt_hyp_internal, hyp_A, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/joint/joint.c

@@ -64,7 +64,7 @@ struct joint_specific {
 #define JOINT_NULL ((struct joint_specific *)0)
 #define JOINT_FLOAT_SIZE 10
 
-extern const struct bu_structparse rt_joint_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_joint_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_joint_internal, location, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%V", 1, "RP1", bu_offsetof(struct rt_joint_internal, reference_path_1), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%V", 1, "RP2", bu_offsetof(struct rt_joint_internal, reference_path_2), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/part/part.c

@@ -212,7 +212,7 @@ struct part_specific {
 #define RT_PARTICLE_SURF_BODY 2
 #define RT_PARTICLE_SURF_HSPHERE 3
 
-extern const struct bu_structparse rt_part_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_part_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_part_internal, part_V, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H", bu_offsetofarray(struct rt_part_internal, part_H, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 1, "r_v", bu_offsetof(struct rt_part_internal, part_vrad), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/revolve/revolve.h

@@ -47,7 +47,7 @@ struct revolve_specific {
 };
 
 
-extern const struct bu_structparse rt_revolve_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_revolve_parse[] = {
     { "%f", 3, "V",   bu_offsetofarray(struct rt_revolve_internal, v3d, fastf_t, X),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "axis", bu_offsetofarray(struct rt_revolve_internal, axis3d, fastf_t, X),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "R",   bu_offsetofarray(struct rt_revolve_internal, r, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/rhc/rhc.c

@@ -225,7 +225,7 @@ clt_rhc_pack(struct bu_pool *pool, struct soltab *stp)
 
 #endif /* USE_OPENCL */
 
-extern const struct bu_structparse rt_rhc_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_rhc_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_rhc_internal, rhc_V, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H", bu_offsetofarray(struct rt_rhc_internal, rhc_H, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "B", bu_offsetofarray(struct rt_rhc_internal, rhc_B, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/rpc/rpc.c

@@ -223,7 +223,7 @@ clt_rpc_pack(struct bu_pool *pool, struct soltab *stp)
 
 #endif /* USE_OPENCL */
 
-extern const struct bu_structparse rt_rpc_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_rpc_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_rpc_internal, rpc_V, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H", bu_offsetofarray(struct rt_rpc_internal, rpc_H, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "B", bu_offsetofarray(struct rt_rpc_internal, rpc_B, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/submodel/submodel.c

@@ -48,7 +48,7 @@
 
 #define RT_SUBMODEL_O(m) bu_offsetof(struct rt_submodel_internal, m)
 
-extern const struct bu_structparse rt_submodel_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_submodel_parse[] = {
     {"%V", 1, "file", RT_SUBMODEL_O(file), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%V", 1, "treetop", RT_SUBMODEL_O(treetop), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%d", 1, "meth", RT_SUBMODEL_O(meth), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/superell/superell.c

@@ -49,7 +49,7 @@
 extern double tgamma(double x);
 #endif
 
-extern const struct bu_structparse rt_superell_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_superell_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_superell_internal, v, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "A", bu_offsetofarray(struct rt_superell_internal, a, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "B", bu_offsetofarray(struct rt_superell_internal, b, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/tgc/tgc.c

@@ -109,7 +109,7 @@ void rt_pnt_sort(register fastf_t *t, int npts);
     }
 
 
-extern const struct bu_structparse rt_tgc_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_tgc_parse[] = {
     { "%f", 3, "V", bu_offsetofarray(struct rt_tgc_internal, v, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "H", bu_offsetofarray(struct rt_tgc_internal, h, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     { "%f", 3, "A", bu_offsetofarray(struct rt_tgc_internal, a, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/librt/primitives/tor/tor.c

@@ -135,7 +135,7 @@
  *
  */
 
-extern const struct bu_structparse rt_tor_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_tor_parse[] = {
     {"%f", 3, "V",   bu_offsetofarray(struct rt_tor_internal, v, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},
     {"%f", 3, "H",   bu_offsetofarray(struct rt_tor_internal, h, fastf_t, X), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},
     {"%f", 1, "r_a", bu_offsetof(struct rt_tor_internal, r_a),  BU_STRUCTPARSE_FUNC_NULL, NULL, NULL},

src/librt/primitives/vol/vol.c

@@ -64,7 +64,7 @@ struct rt_vol_specific {
 
 #define VOL_O(m) bu_offsetof(struct rt_vol_internal, m)
 
-extern const struct bu_structparse rt_vol_parse[] = {
+EXTERNVARINIT const struct bu_structparse rt_vol_parse[] = {
     {"%s", RT_VOL_NAME_LEN, "file", bu_offsetof(struct rt_vol_internal, name), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%s", RT_VOL_NAME_LEN, "name", bu_offsetof(struct rt_vol_internal, name), BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },
     {"%c", 1, "src",	VOL_O(datasrc),	BU_STRUCTPARSE_FUNC_NULL, NULL, NULL },

src/mged/cmd.cpp

@@ -67,6 +67,7 @@
 #include "./mged_dm.h"
 #include "./sedit.h"
 
+__BEGIN_DECLS
 void mged_finish(struct mged_state *s, int exitcode); /* in mged.c */
 void update_grids(struct mged_state *s, fastf_t sf);		/* in grid.c */
 void set_localunit_TclVar(struct mged_state *s);		/* in chgmodel.c */
@@ -75,6 +76,7 @@ extern void init_qray(void);			/* in qray.c */
 /* in tclsync.c */
 Tcl_Obj *BuildInterpSnapshot(Tcl_Interp *interp);
 int ReplayInterpSnapshot(Tcl_Interp *interp, Tcl_Obj *snapshot);
+__END_DECLS
 
 
 // FIXME: Globals

src/rt/view.c

@@ -83,7 +83,7 @@ extern int srv_scanlen;		/* BUFMODE_RTSRV buffer length */
 #endif
 
 
-extern const char title[] = "The BRL-CAD Raytracer RT";
+EXTERNVARINIT const char title[] = "The BRL-CAD Raytracer RT";
 
 static struct scanline* scanline = NULL;
 static fastf_t* psum_buffer;            /* Buffer that keeps partial sums for multi-samples modes */

src/rt/viewarea.c

@@ -70,7 +70,7 @@ struct bu_structparse view_parse[] = {
 };
 
 
-extern const char title[] = "RT Area";
+EXTERNVARINIT const char title[] = "RT Area";
 
 struct point_list {
     struct point_list * next;

src/rt/viewcheck.c

@@ -62,7 +62,7 @@ struct bu_structparse view_parse[] = {
 extern FILE *outfp;
 
 
-extern const char title[] = "RT Check";
+EXTERNVARINIT const char title[] = "RT Check";
 
 
 static size_t noverlaps;		/* Number of overlaps seen */

src/rt/viewdepth.c

@@ -63,7 +63,7 @@ struct bu_structparse view_parse[] = {
     {"",	0, (char *)0,	0,	BU_STRUCTPARSE_FUNC_NULL, NULL, NULL}
 };
 
-extern const char title[] = "RT Depth";
+EXTERNVARINIT const char title[] = "RT Depth";
 
 /*
  *  Called at the start of a run.

src/rt/viewedge.c

@@ -278,7 +278,7 @@ struct bu_structparse view_parse[] = {
 };
 
 
-extern const char title[] = "RT Hidden-Line Renderer";
+EXTERNVARINIT const char title[] = "RT Hidden-Line Renderer";
 
 
 int handle_main_ray(struct application *ap, register struct partition *PartHeadp, struct seg *segp);

src/rt/viewg3.c

@@ -81,7 +81,7 @@ struct bu_structparse view_parse[] = {
 static mat_t model2hv;			/* model coords to GIFT h, v in inches */
 static FILE *plotfp;			/* optional plotting file */
 
-extern const char title[] = "RTG3";
+EXTERNVARINIT const char title[] = "RTG3";
 
 int rayhit(register struct application *ap, struct partition *PartHeadp, struct seg *segp);
 int raymiss(register struct application *ap);

src/rt/viewhide.c

@@ -82,7 +82,7 @@ struct bu_structparse view_parse[] = {
 };
 
 
-extern const char title[] = "RT Hidden-Line Plot";
+EXTERNVARINIT const char title[] = "RT Hidden-Line Plot";
 
 int	rayhit(register struct application *ap, struct partition *PartHeadp, struct seg *);
 int	raymiss(register struct application *ap);

src/rt/viewsil.c

@@ -56,7 +56,7 @@ struct bu_structparse view_parse[] = {
     {"",	0, (char *)0,	0,	BU_STRUCTPARSE_FUNC_NULL, NULL, NULL}
 };
 
-extern const char title[] = "RT Simple Intersection Lightmap";
+EXTERNVARINIT const char title[] = "RT Simple Intersection Lightmap";
 
 
 int	rayhit(register struct application *ap, struct partition *PartHeadp, struct seg *segp);

src/rt/viewweight.c

@@ -60,7 +60,7 @@ struct bu_structparse view_parse[] = {
 };
 
 
-extern const char title[] = "RT Weight";
+EXTERNVARINIT const char title[] = "RT Weight";
 
 int noverlaps = 0;
 FILE *densityfp;

src/rt/viewxray.c

@@ -72,7 +72,7 @@ struct bu_structparse view_parse[] = {
 static char *floatfilename=NULL;
 const char floatfileext[] = ".los";
 
-extern const char title[] = "RT X-Ray";
+EXTERNVARINIT const char title[] = "RT X-Ray";
 
 /*
  *  Called at the start of a run.