89 lines
2.1 KiB
Bash
89 lines
2.1 KiB
Bash
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#!/bin/sh
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# detect the uninteresting (unlikely to be manually changed by the user)
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# parts of config.h
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if test -z "$O" || ! cd "$O"; then
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echo '$O= not defined or not a directory' >&2
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exit 1
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fi
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> config_detected.mk
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ansi_headers='assert ctype errno limits locale math signal
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stdarg stddef stdint stdio stdlib string'
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common_headers='dlfcn inttypes memory strings sched
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sys/inttypes sys/stat sys/types unistd'
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all_ansi=t
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echo '/* ANSI C headers: */'
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for h in $ansi_headers; do
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if test x$h = xlocale; then
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H=HAVE_LOCALE
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else
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H="HAVE_`echo $h | tr a-z A-Z | tr / _`_H"
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fi
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cat > t.c <<EOF
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#include <$h.h>
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int main(void) { return 0; }
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EOF
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if $CC -o t.o $CFLAGS $CPPFLAGS t.c >> out 2>&1; then
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echo "#define $H 1"
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echo "$H := 1" >> config_detected.mk
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else
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echo "/* #undef $H */"
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echo "# $H := " >> config_detected.mk
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all_ansi=
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fi
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done
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if test x$all_ansi = xt; then
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echo '#define STDC_HEADERS 1'
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else
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echo '/* #undef STDC_HEADERS */'
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fi
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echo ''
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echo '/* common system headers/features on UNIX and UNIX-like system: */'
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for h in $common_headers; do
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H="HAVE_`echo $h | tr a-z A-Z | tr / _`_H"
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cat > t.c <<EOF
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#include <$h.h>
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int main(void) { return 0; }
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EOF
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if $CC -o t.o $CFLAGS $CPPFLAGS t.c >> out 2>&1; then
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echo "#define $H 1"
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echo "$H := 1" >> config_detected.mk
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else
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echo "/* #undef $H */"
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echo "# $H :=" >> config_detected.mk
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fi
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done
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# test for setenv
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cat > t.c <<EOF
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#include <stdlib.h>
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int main(void) { setenv("mpd","rocks", 1); return 0; }
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EOF
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if $CC -o t.o $CFLAGS $CPPFLAGS t.c >> out 2>&1; then
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echo '#define HAVE_SETENV 1'
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echo "HAVE_SETENV := 1" >> config_detected.mk
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else
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echo '/* #undef HAVE_SETENV */'
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echo "# HAVE_SETENV :=" >> config_detected.mk
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fi
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echo ''
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# test for alloca
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cat > t.c <<EOF
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#include <alloca.h>
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int main(void) { char *x = (char *)alloca(2 * sizeof(int)); return 0; }
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EOF
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if $CC -o t.o $CFLAGS $CPPFLAGS t.c >> out 2>&1; then
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echo '#define HAVE_ALLOCA_H 1'
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echo "HAVE_ALLOCA_H := 1" >> config_detected.mk
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else
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echo '/* #undef HAVE_ALLOCA_H */'
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echo "# HAVE_ALLOCA_H :=" >> config_detected.mk
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fi
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echo ''
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exec rm -f out t.c t.o
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