diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/Makefile.in | 7 | ||||
| -rw-r--r-- | gcc/opts.sh | 17 |
2 files changed, 17 insertions, 7 deletions
diff --git a/gcc/Makefile.in b/gcc/Makefile.in index 8d9ceb8..a62873f 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -1416,9 +1416,10 @@ s-specs : Makefile options.c: $(lang_opt_files) $(srcdir)/opts.sh options.h intl.h -options.h: $(lang_opt_files) $(srcdir)/opts.sh - AWK=$(AWK) $(SHELL) $(srcdir)/opts.sh options.c options.h \ - $(lang_opt_files) +options.h: $(lang_opt_files) $(srcdir)/opts.sh Makefile + AWK=$(AWK) $(SHELL) $(srcdir)/opts.sh \ + '$(SHELL) $(srcdir)/move-if-change' \ + options.c options.h $(lang_opt_files) dumpvers: dumpvers.c diff --git a/gcc/opts.sh b/gcc/opts.sh index 985cf96..3509dfd 100644 --- a/gcc/opts.sh +++ b/gcc/opts.sh @@ -17,7 +17,7 @@ # along with this program; if not, write to the Free Software # Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # -# Usage: opts.sh outfile.c outfile.h file1.opt [file2.opt, ...] +# Usage: opts.sh moveifchange srcdir outfile.c outfile.h file1.opt [ ...] # Always operate in the C locale. LANG=C @@ -30,8 +30,11 @@ AWK=${AWK-awk} SORT=sort # Could be /bin/sort or /usr/bin/sort +MOVEIFCHANGE=$1; shift C_FILE=$1; shift H_FILE=$1; shift +TMP_C_FILE=tmp-${C_FILE} +TMP_H_FILE=tmp-${H_FILE} ${AWK} ' # Ignore comments and blank lines @@ -88,13 +91,14 @@ ${AWK} ' # Dump out an enumeration into a .h file, and an array of options into a # C file. Combine the flags of duplicate options. END { - c_file = "'${C_FILE}'" - h_file = "'${H_FILE}'" + c_file = "'${TMP_C_FILE}'" + h_file = "'${TMP_H_FILE}'" + realh_file = "'${H_FILE}'" comma = "," print "/* This file is auto-generated by opts.sh. */\n" > c_file print "#include <intl.h>" >> c_file - print "#include \"" h_file "\"" >> c_file + print "#include \"" realh_file "\"" >> c_file print "#include \"opts.h\"\n" >> c_file print "const char * const lang_names[] =\n{" >> c_file @@ -163,3 +167,8 @@ ${AWK} ' print "};" >> c_file } ' + +# Copy the newly generated files back to the correct names only if different. +# This is to prevent a cascade of file rebuilds when not necessary. +${MOVEIFCHANGE} ${TMP_H_FILE} ${H_FILE} +${MOVEIFCHANGE} ${TMP_C_FILE} ${C_FILE} |