testsuite/lib/gfortran.exp: Add -I for ISO*.h [PR101305, PR101660]

This patch adds -I$specdir/libgfortran to GFORTRAN_UNDER_TEST, when
set by proc gfortran_init. As the $specdir depends on the multilib
setting, it has to be re-set for a different multilib; hence, we track
whether a previous call to gfortran_init set that var or whether it
was set differently.

gcc/testsuite/
	PR libfortran/101305
	PR fortran/101660

	* lib/gfortran.exp (gfortran_init): Add -I $specdir/libgfortran to
	GFORTRAN_UNDER_TEST; update it when set by previous gfortran_init call.
	* gfortran.dg/ISO_Fortran_binding_1.c: Use <...> not "..." for
	ISO_Fortran_binding.h's #include.
	* gfortran.dg/ISO_Fortran_binding_10.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_11.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_12.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_15.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_16.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_17.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_18.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_3.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_5.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_6.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_7.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_8.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_9.c: Likewise.
	* gfortran.dg/PR94327.c: Likewise.
	* gfortran.dg/PR94331.c: Likewise.
	* gfortran.dg/bind_c_array_params_3_aux.c: Likewise.
	* gfortran.dg/iso_fortran_binding_uint8_array_driver.c: Likewise.
	* gfortran.dg/pr93524.c: Likewise.

20 files changed, 27 insertions, 21 deletions

diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.c
index bb56ca0..d0d036a 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_1.c
@@ -1,6 +1,6 @@
 /* Test F2008 18.5: ISO_Fortran_binding.h functions.  */
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_10.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_10.c
index c3954e4..91222ff 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_10.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_10.c
@@ -2,7 +2,7 @@
 
 /* Contributed by Reinhold Bader  <Bader@lrz.de> */
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <stdbool.h>
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_11.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_11.c
index c2d4e11..e013011 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_11.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_11.c
@@ -5,7 +5,7 @@ Contributed by Reinhold Bader  <Bader@lrz.de>#include <stdio.h> */
 #include <stdlib.h>
 #include <stddef.h>
 #include <stdio.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 typedef struct
 {
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_12.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_12.c
index 078c5de..0a41576 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_12.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_12.c
@@ -2,7 +2,7 @@
 
 #include <stdio.h>
 #include <math.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 /* Contributed by Reinhold Bader  <Bader@lrz.de>  */
 
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_15.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_15.c
index 622f2de..fc70da4 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_15.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_15.c
@@ -4,7 +4,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 // Prototype for Fortran functions
 extern void Fsub(CFI_cdesc_t *);
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_16.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_16.c
index 50b92ec..915b6e7 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_16.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_16.c
@@ -1,6 +1,6 @@
 /* Test the fix for PR92142. */
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 #include <stdlib.h>
 
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_17.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_17.c
index b0893cc..fa75268 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_17.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_17.c
@@ -2,7 +2,7 @@
 
 #include <stdio.h>
 #include <assert.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 void Csub(const CFI_cdesc_t *, size_t, CFI_index_t invalid);
 
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_18.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_18.c
index ef40134..5a3952c 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_18.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_18.c
@@ -1,6 +1,6 @@
 #include <stdlib.h>
 #include <string.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 
 extern int do_loop(CFI_cdesc_t* array);
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_3.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_3.c
index 9f35b0d..33d1bc3 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_3.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_3.c
@@ -1,4 +1,4 @@
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 #include <stdio.h>
 #include <stdlib.h>
 
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c
index 116f548..b18a899 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_5.c
@@ -4,7 +4,7 @@
 
 #include <stdio.h>
 #include <math.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 typedef struct {
   int i;
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c
index 704b27c..c7981c5 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_6.c
@@ -4,7 +4,7 @@
 
 #include <stdio.h>
 #include <math.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 #define DEBUG 0
 
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.c
index 26b4ab5..8162451 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_7.c
@@ -2,7 +2,7 @@
 
 /* Contributed by Reinhold Bader  <Bader@lrz.de> */
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.c
index a0d1bdc..d3dce3a 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_8.c
@@ -2,7 +2,7 @@
 
 /* Contributed by Reinhold Bader  <Bader@lrz.de> */
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 #include <stdio.h>
 
 float Cxgl[] = { 1.1, 2.3, 5.1, 4.2 };
diff --git a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_9.c b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_9.c
index 632604f..cb17077 100644
--- a/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_9.c
+++ b/gcc/testsuite/gfortran.dg/ISO_Fortran_binding_9.c
@@ -2,7 +2,7 @@
 
 /* Contributed by Gilles Gouaillardet  <gilles@rist.or.jp> */
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 #include <stdlib.h>
 
 int cdesc_c(CFI_cdesc_t* x, long *expected)
diff --git a/gcc/testsuite/gfortran.dg/PR94327.c b/gcc/testsuite/gfortran.dg/PR94327.c
index 4ce408d..9d22681 100644
--- a/gcc/testsuite/gfortran.dg/PR94327.c
+++ b/gcc/testsuite/gfortran.dg/PR94327.c
@@ -4,7 +4,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 bool c_vrfy (const CFI_cdesc_t *restrict);
 
diff --git a/gcc/testsuite/gfortran.dg/PR94331.c b/gcc/testsuite/gfortran.dg/PR94331.c
index 2fbfe0e..df571c7 100644
--- a/gcc/testsuite/gfortran.dg/PR94331.c
+++ b/gcc/testsuite/gfortran.dg/PR94331.c
@@ -4,7 +4,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 bool c_vrfy (const CFI_cdesc_t *restrict);
 
diff --git a/gcc/testsuite/gfortran.dg/bind_c_array_params_3_aux.c b/gcc/testsuite/gfortran.dg/bind_c_array_params_3_aux.c
index 5176d8b..4594185 100644
--- a/gcc/testsuite/gfortran.dg/bind_c_array_params_3_aux.c
+++ b/gcc/testsuite/gfortran.dg/bind_c_array_params_3_aux.c
@@ -5,7 +5,7 @@
 #include <errno.h>
 #include <stdio.h>
 
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 void arr_set_c(CFI_cdesc_t*);
 
diff --git a/gcc/testsuite/gfortran.dg/iso_fortran_binding_uint8_array_driver.c b/gcc/testsuite/gfortran.dg/iso_fortran_binding_uint8_array_driver.c
index bfd567b..9c2b5fb 100644
--- a/gcc/testsuite/gfortran.dg/iso_fortran_binding_uint8_array_driver.c
+++ b/gcc/testsuite/gfortran.dg/iso_fortran_binding_uint8_array_driver.c
@@ -1,7 +1,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <inttypes.h>
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 extern void fsub(CFI_cdesc_t *);
 
diff --git a/gcc/testsuite/gfortran.dg/pr93524.c b/gcc/testsuite/gfortran.dg/pr93524.c
index ba40d00..8a6c066 100644
--- a/gcc/testsuite/gfortran.dg/pr93524.c
+++ b/gcc/testsuite/gfortran.dg/pr93524.c
@@ -2,7 +2,7 @@
    sm incorrectly for dimensions > 2.  */
 
 #include <stdlib.h>  // For size_t
-#include "ISO_Fortran_binding.h"
+#include <ISO_Fortran_binding.h>
 
 void my_fortran_sub_1 (CFI_cdesc_t *dv); 
 void my_fortran_sub_2 (CFI_cdesc_t *dv); 
diff --git a/gcc/testsuite/lib/gfortran.exp b/gcc/testsuite/lib/gfortran.exp
index 1e7da11..cae6738 100644
--- a/gcc/testsuite/lib/gfortran.exp
+++ b/gcc/testsuite/lib/gfortran.exp
@@ -151,6 +151,7 @@ proc gfortran_init { args } {
     global gcc_warning_prefix
     global gcc_error_prefix
     global TEST_ALWAYS_FLAGS
+    global gfortran_init_set_GFORTRAN_UNDER_TEST
 
     # We set LC_ALL and LANG to C so that we get the same error messages as expected.
     setenv LC_ALL C
@@ -166,7 +167,11 @@ proc gfortran_init { args } {
       setenv LANG C.ASCII
     }
 
-    if ![info exists GFORTRAN_UNDER_TEST] then {
+    # GFORTRAN_UNDER_TEST as set below contains $specpath, which depends on
+    # the used multilib config. Thus, its value may need to be reset;
+    # that's tracked via gfortran_init_set_GFORTRAN_UNDER_TEST.
+    if { ![info exists GFORTRAN_UNDER_TEST]
+	 || [info exists gfortran_init_set_GFORTRAN_UNDER_TEST] } then {
 	if [info exists TOOL_EXECUTABLE] {
 	    set GFORTRAN_UNDER_TEST $TOOL_EXECUTABLE
 	} else {
@@ -178,7 +183,8 @@ proc gfortran_init { args } {
 		} else {
 		    set specpath [get_multilibs]
 		}
-		set GFORTRAN_UNDER_TEST [findfile $base_dir/../../gfortran "$base_dir/../../gfortran -B$base_dir/../../ -B$specpath/libgfortran/" [findfile $base_dir/gfortran "$base_dir/gfortran -B$base_dir/" [transform gfortran]]]
+		set gfortran_init_set_GFORTRAN_UNDER_TEST 1
+		set GFORTRAN_UNDER_TEST [findfile $base_dir/../../gfortran "$base_dir/../../gfortran -B$base_dir/../../ -B$specpath/libgfortran/ -I$specpath/libgfortran" [findfile $base_dir/gfortran "$base_dir/gfortran -B$base_dir/" [transform gfortran]]]
 	    }
 	}
     }