Add comment explaining why we use -traditional-cpp for Darwin.

Bug #106617

2 files changed, 20 insertions, 18 deletions

diff --git a/configure b/configure
index 53fe6545..dba4dc40 100755
--- a/configure
+++ b/configure
@@ -4132,6 +4132,7 @@ EOF
         CPU_ARCH=ppc
     fi
     DSO_LDOPTS='-dynamiclib -compatibility_version 1 -current_version 1 -all_load -install_name @executable_path/$@'
+    # Use the standard preprocessor (cpp)
     CFLAGS="$CFLAGS -traditional-cpp"
     MKSHLIB='$(CC) -arch $(CPU_ARCH) $(DSO_LDOPTS) -o $@'
     DLL_SUFFIX=dylib
@@ -4570,12 +4571,12 @@ esac
 if test -z "$SKIP_LIBRARY_CHECKS"; then
 
 echo $ac_n "checking for dlopen""... $ac_c" 1>&6
-echo "configure:4574: checking for dlopen" >&5
+echo "configure:4575: checking for dlopen" >&5
 if eval "test \"`echo '$''{'ac_cv_func_dlopen'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4579 "configure"
+#line 4580 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char dlopen(); below.  */
@@ -4598,7 +4599,7 @@ dlopen();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4602: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4603: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_dlopen=yes"
 else
@@ -4617,7 +4618,7 @@ else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:4621: checking for dlopen in -ldl" >&5
+echo "configure:4622: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4625,7 +4626,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4629 "configure"
+#line 4630 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -4636,7 +4637,7 @@ int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:4640: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4641: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4664,13 +4665,13 @@ fi
 
 if test $ac_cv_prog_gcc = yes; then
     echo $ac_n "checking whether ${CC-cc} needs -traditional""... $ac_c" 1>&6
-echo "configure:4668: checking whether ${CC-cc} needs -traditional" >&5
+echo "configure:4669: checking whether ${CC-cc} needs -traditional" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc_traditional'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     ac_pattern="Autoconf.*'x'"
   cat > conftest.$ac_ext <<EOF
-#line 4674 "configure"
+#line 4675 "configure"
 #include "confdefs.h"
 #include <sgtty.h>
 Autoconf TIOCGETP
@@ -4688,7 +4689,7 @@ rm -f conftest*
 
   if test $ac_cv_prog_gcc_traditional = no; then
     cat > conftest.$ac_ext <<EOF
-#line 4692 "configure"
+#line 4693 "configure"
 #include "confdefs.h"
 #include <termio.h>
 Autoconf TCGETA
@@ -4712,12 +4713,12 @@ fi
 for ac_func in lchown strerror
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4716: checking for $ac_func" >&5
+echo "configure:4717: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4721 "configure"
+#line 4722 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4740,7 +4741,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4744: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4745: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -4778,7 +4779,7 @@ fi
 
 
 echo $ac_n "checking for pthread_create in -lpthreads""... $ac_c" 1>&6
-echo "configure:4782: checking for pthread_create in -lpthreads" >&5
+echo "configure:4783: checking for pthread_create in -lpthreads" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { int a = 1;  } 
@@ -4800,7 +4801,7 @@ echo "
         echo "$ac_t""no" 1>&6
         
 echo $ac_n "checking for pthread_create in -lpthread""... $ac_c" 1>&6
-echo "configure:4804: checking for pthread_create in -lpthread" >&5
+echo "configure:4805: checking for pthread_create in -lpthread" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { int a = 1;  } 
@@ -4822,7 +4823,7 @@ echo "
         echo "$ac_t""no" 1>&6
         
 echo $ac_n "checking for pthread_create in -lc_r""... $ac_c" 1>&6
-echo "configure:4826: checking for pthread_create in -lc_r" >&5
+echo "configure:4827: checking for pthread_create in -lc_r" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { int a = 1;  } 
@@ -4844,7 +4845,7 @@ echo "
         echo "$ac_t""no" 1>&6
         
 echo $ac_n "checking for pthread_create in -lc""... $ac_c" 1>&6
-echo "configure:4848: checking for pthread_create in -lc" >&5
+echo "configure:4849: checking for pthread_create in -lc" >&5
 echo "
     #include <pthread.h> 
     void *foo(void *v) { int a = 1;  } 
@@ -4994,7 +4995,7 @@ if test -n "$USE_PTHREADS"; then
       rm -f conftest*
    ac_cv_have_dash_pthread=no
    echo $ac_n "checking whether ${CC-cc} accepts -pthread""... $ac_c" 1>&6
-echo "configure:4998: checking whether ${CC-cc} accepts -pthread" >&5
+echo "configure:4999: checking whether ${CC-cc} accepts -pthread" >&5
    echo 'int main() { return 0; }' | cat > conftest.c
    ${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
    if test $? -eq 0; then
@@ -5010,7 +5011,7 @@ echo "configure:4998: checking whether ${CC-cc} accepts -pthread" >&5
 			    ac_cv_have_dash_pthreads=no
     if test "$ac_cv_have_dash_pthread" = "no"; then
 	    echo $ac_n "checking whether ${CC-cc} accepts -pthreads""... $ac_c" 1>&6
-echo "configure:5014: checking whether ${CC-cc} accepts -pthreads" >&5
+echo "configure:5015: checking whether ${CC-cc} accepts -pthreads" >&5
     	echo 'int main() { return 0; }' | cat > conftest.c
 	    ${CC-cc} -pthreads -o conftest conftest.c > conftest.out 2>&1
     	if test $? -eq 0; then
diff --git a/configure.in b/configure.in
index dd839c92..c3a580d2 100644
--- a/configure.in
+++ b/configure.in
@@ -1431,6 +1431,7 @@ mips-sony-newsos*)
         CPU_ARCH=ppc
     fi
     DSO_LDOPTS='-dynamiclib -compatibility_version 1 -current_version 1 -all_load -install_name @executable_path/$@'
+    # Use the standard preprocessor (cpp)
     CFLAGS="$CFLAGS -traditional-cpp"
     MKSHLIB='$(CC) -arch $(CPU_ARCH) $(DSO_LDOPTS) -o $@'
     DLL_SUFFIX=dylib