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configure: tidy up comments

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- convert `#` comments to `dnl`, except copyright headers, and inline
  comments in `curl-complilers.m4`.
- drop empty comments.
- drop line-ending `dnl` markers. (except `zz40-xc-ovr.m4` where it's
  used to produce a comment in `configure`.)
- replace `dnl` line with C comment in `AC_CHECK_HEADERS()`.

Verified to produce the same `configure` script except empty lines,
`#` comments, and C comments, with autoreconf 2.72.

Cherry-picked from #21000

Closes #21246
This commit is contained in:
Viktor Szakats 2026-03-19 21:10:39 +01:00
parent 0a7e1982fe
commit 8a3991e050
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19 changed files with 1014 additions and 1033 deletions
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36
docs/libcurl/libcurl.m4
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@ -20,7 +20,7 @@
#
# SPDX-License-Identifier: curl
#
###########################################################################
#***************************************************************************
# LIBCURL_CHECK_CONFIG([DEFAULT-ACTION], [MINIMUM-VERSION],
# [ACTION-IF-YES], [ACTION-IF-NO])
# ----------------------------------------------------------
@ -129,9 +129,9 @@ AC_DEFUN([LIBCURL_CHECK_CONFIG],
if test -z "$LIBCURL"; then
LIBCURL=`$_libcurl_config --libs`
# This is so silly, but Apple actually has a bug in their
# curl-config script. Fixed in Tiger, but there are still
# lots of Panther installs around.
dnl This is so silly, but Apple actually has a bug in their
dnl curl-config script. Fixed in Tiger, but there are still
dnl lots of Panther installs around.
case "${host}" in
powerpc-apple-darwin7*)
LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
@ -139,10 +139,10 @@ AC_DEFUN([LIBCURL_CHECK_CONFIG],
esac
fi
# All curl-config scripts support --feature
dnl All curl-config scripts support --feature
_libcurl_features=`$_libcurl_config --feature`
# Is it modern enough to have --protocols? (7.12.4)
dnl Is it modern enough to have --protocols? (7.12.4)
if test "$_libcurl_version" -ge 461828; then
_libcurl_protocols=`$_libcurl_config --protocols`
fi
@ -155,8 +155,8 @@ AC_DEFUN([LIBCURL_CHECK_CONFIG],
if test "$_libcurl_try_link" = "yes"; then
# we did not find curl-config, so let's see if the user-supplied
# link line (or failing that, "-lcurl") is enough.
dnl we did not find curl-config, so let's see if the user-supplied
dnl link line (or failing that, "-lcurl") is enough.
LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"}
AC_CACHE_CHECK([whether libcurl is usable],
@ -189,8 +189,8 @@ AC_DEFUN([LIBCURL_CHECK_CONFIG],
if test "$libcurl_cv_lib_curl_usable" = "yes"; then
# Does curl_free() exist in this version of libcurl?
# If not, fake it with free()
dnl Does curl_free() exist in this version of libcurl?
dnl If not, fake it with free()
_libcurl_save_cppflags=$CPPFLAGS
CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
@ -219,22 +219,22 @@ AC_DEFUN([LIBCURL_CHECK_CONFIG],
if test -z "$_libcurl_protocols"; then
# We do not have --protocols; assume that all
# protocols are available
dnl We do not have --protocols; assume that all
dnl protocols are available
_libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP"
if test "$libcurl_feature_SSL" = "yes"; then
_libcurl_protocols="$_libcurl_protocols HTTPS"
# FTPS was not standards-compliant until version
# 7.11.0 (0x070b00 == 461568)
dnl FTPS was not standards-compliant until version
dnl 7.11.0 (0x070b00 == 461568)
if test "$_libcurl_version" -ge 461568; then
_libcurl_protocols="$_libcurl_protocols FTPS"
fi
fi
# RTSP, IMAP, POP3 and SMTP were added in
# 7.20.0 (0x071400 == 463872)
dnl RTSP, IMAP, POP3 and SMTP were added in
dnl 7.20.0 (0x071400 == 463872)
if test "$_libcurl_version" -ge 463872; then
_libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP"
fi
@ -262,10 +262,10 @@ AC_DEFUN([LIBCURL_CHECK_CONFIG],
fi
if test "x$_libcurl_with" = "xno" || test "$libcurl_cv_lib_curl_usable" != "yes"; then
# This is the IF-NO path
dnl This is the IF-NO path
ifelse([$4],,:,[$4])
else
# This is the IF-YES path
dnl This is the IF-YES path
ifelse([$3],,:,[$3])
fi