configure: prefer 'long long' to int64_t for curl_off_t

Since it is a native type and it makes it less complicated to find a
matching one in system.h

Bug: https://curl.haxx.se/m

configure: prefer 'long long' to int64_t for curl_off_t

Since it is a native type and it makes it less complicated to find a
matching one in system.h

Bug: https://curl.haxx.se/mail/lib-2017-04/0010.html
Reported-by: Dan Fandrich

Closes #1388

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configure: verify that compiler groks -Werror=partial-availability

Reported-by: bemoody

Fixes #1104

configure: raise the default minimum version for macos to 10.8

follow-up to 4f8d0b6f02aa7043. Since the darwinssl code breaks
otherwise. If you build without darwinssl 10.5 works fine.

configure.in: Fix test syntax

Some versions of test allow == for equality, but others (such as the HP-UX
version) do not. Use a single = for correctness.

Error output:
chec

configure.in: Fix test syntax

Some versions of test allow == for equality, but others (such as the HP-UX
version) do not. Use a single = for correctness.

Error output:
checking for monotonic clock_gettime... ./configure[20445]: ==: A test command parameter is not valid.

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configure: Check for other variants of the -m*os*-version-min flags

In addition to -miphoneos-version-min, the same version can be set
using -mios-version-min. And for WatchOS and TvOS,

configure: Check for other variants of the -m*os*-version-min flags

In addition to -miphoneos-version-min, the same version can be set
using -mios-version-min. And for WatchOS and TvOS, there's
-mwatchos-version-min and -mtvos-version-min.

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configure: set min version flags for builds on mac

This helps building binaries that can work on multiple macOS versions.

Help-by: Martin Storsjö

Fixes #1069

configure: make the cpp -P detection not clobber CPPFLAGS

CPPPFLAGS is now CPPPFLAG. Fixes CURL_CHECK_DEF.

Fixes #958

acinclude.m4: improve autodetection of CA bundle on FreeBSD

The FreeBSD Port security/ca_root_nss installs the Mozilla NSS CA bundle
to /usr/local/share/certs/ca-root-nss.crt. Use this b

acinclude.m4: improve autodetection of CA bundle on FreeBSD

The FreeBSD Port security/ca_root_nss installs the Mozilla NSS CA bundle
to /usr/local/share/certs/ca-root-nss.crt. Use this bundle in the
discovery process.

This change also removes the former FreeBSD path that has been obsolete
for 8 years since this FreeBSD ports commit:
https://svnweb.freebsd.org/ports/head/security/?view=revision&revision=215953

Closes #894

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configure: ac_cv_ -> curl_cv_ for write-only vars

These configure vars are modified in a curl-specific way but never
evaluated or loaded from cache, even though they are designated as

configure: ac_cv_ -> curl_cv_ for write-only vars

These configure vars are modified in a curl-specific way but never
evaluated or loaded from cache, even though they are designated as
_cv_. We could either implement proper AC_CACHE_CHECKs for them, or
remove them completely.

Fixes #603 as ac_cv_func_gethostbyname is no longer clobbered, and
AC_CHECK_FUNC(gethostbyname...) will no longer spuriously succeed after
the first configure run with caching.

`ac_cv_func_strcasecmp` is curious, see #770.

`eval "ac_cv_func_$func=yes"` can still cause problems as it works in
tandem with AC_CHECK_FUNCS and then potentially modifies its result. It
would be best to rewrite this test to use a new CURL_CHECK_FUNCS macro,
which works the same as AC_CHECK_FUNCS but relies on caching the values
of curl_cv_func_* variables, without modifiying ac_cv_func_*.

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configure: ac_cv_ -> curl_cv_ for r/w vars

These configure vars are modified in a curl-specific way and modified by
the configure process, but are never loaded from cache, even though th

configure: ac_cv_ -> curl_cv_ for r/w vars

These configure vars are modified in a curl-specific way and modified by
the configure process, but are never loaded from cache, even though they
are designated as _cv_. We should implement proper AC_CACHE_CHECKs for
them eventually.

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configure: ac_cv_func_clock_gettime -> curl_...

This variable must not be cached in its current form, as any cached
information will prevent the next configure run from determining the

configure: ac_cv_func_clock_gettime -> curl_...

This variable must not be cached in its current form, as any cached
information will prevent the next configure run from determining the
correct LIBS needed for the function. Thus, rename prefix `ac_cv_` to
just `curl_`.

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configure: ac_cv_ -> curl_cv_ for all cached vars

This was automated by:

sed -b -i -f <(ack -A1 AC_CACHE_CHECK | \
ack -o 'ac_cv_.*?\b' | \
sor

configure: ac_cv_ -> curl_cv_ for all cached vars

This was automated by:

sed -b -i -f <(ack -A1 AC_CACHE_CHECK | \
ack -o 'ac_cv_.*?\b' | \
sort -u | xargs -n1 bash -c \
'echo "s/$0/curl_cv_${0#ac_cv_}/g"') \
$(git ls-files)

This only changed the prefix for 16 variables actually checked with
AC_CACHE_CHECK.

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configure: use cpp -P when needed

Since gcc 5, the processor output can get split up on multiple lines
that made the configure script fail to figure out values from
definitions. The

configure: use cpp -P when needed

Since gcc 5, the processor output can get split up on multiple lines
that made the configure script fail to figure out values from
definitions. The fix is to use cpp -P, and this fix now first checks if
cpp -P is necessary and then if cpp -P works before it uses that to
extract defined values.

Fixes #719

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configure: warn on invalid ca bundle or path

- Warn if --with-ca-bundle file does not exist.

- Warn if --with-ca-path directory does not contain certificates.

- Improve hel

configure: warn on invalid ca bundle or path

- Warn if --with-ca-bundle file does not exist.

- Warn if --with-ca-path directory does not contain certificates.

- Improve help messages for both.

Example configure output:

ca cert bundle: /some/file (warning: certs not found)
ca cert path: /some/dir (warning: certs not found)

Bug: https://github.com/curl/curl/issues/404
Reported-by: Jeffrey Walton

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configure: --with-ca-fallback: use built-in TLS CA fallback

When trying to verify a peer without having any root CA certificates
set, this makes libcurl use the TLS library's built in de

configure: --with-ca-fallback: use built-in TLS CA fallback

When trying to verify a peer without having any root CA certificates
set, this makes libcurl use the TLS library's built in default as
fallback.

Closes #569

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URLs: change all http:// URLs to https://

acinclude: Remove check for 16-bit curl_off_t

Because it's illogical to check for a 16-bit curl_off_t.

Ref: https://github.com/bagder/curl/issues/425#issuecomment-154964205

build: Fix support for PKG_CONFIG

- Allow the user to use PKG_CONFIG but not PKGCONFIG.

Background:

Last week in 14d5a86 a change was made to allow the user to set the

build: Fix support for PKG_CONFIG

- Allow the user to use PKG_CONFIG but not PKGCONFIG.

Background:

Last week in 14d5a86 a change was made to allow the user to set the
PKGCONFIG variable. Today in 72d99f2 I supplemented that to allow the
more common PKG_CONFIG as an alternative if PKGCONFIG is not set.

Neither of those changes worked as expected because PKGCONFIG is
occasionally reset in configure and by the CURL_CHECK_PKGCONFIG macro.
Instead in this commit I take the approach that the user may set
PKG_CONFIG only.

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build: Fix mingw ssl gdi32 order

- If mingw ssl make sure -lgdi32 comes after ssl libs

- Allow PKG_CONFIG to set pkg-config location and options

Bug: https://github.com/bag

build: Fix mingw ssl gdi32 order

- If mingw ssl make sure -lgdi32 comes after ssl libs

- Allow PKG_CONFIG to set pkg-config location and options

Bug: https://github.com/bagder/curl/pull/501
Reported-by: Kang Lin

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acinclude: remove PKGCONFIG override

... and allow it to get set by a caller easier.

Reported-by: Rainer Jung
Bug: http://curl.haxx.se/mail/lib-2015-10/0035.html

configure: add --disable-rt option

This option disables any attempts in configure to create dependency on
stuff requiring linking to librt.so and libpthread.so, in this case this
mea

configure: add --disable-rt option

This option disables any attempts in configure to create dependency on
stuff requiring linking to librt.so and libpthread.so, in this case this
means clock_gettime(CLOCK_MONOTONIC, &mt).

We were in need to build curl which doesn't link libpthread.so to avoid
the following bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=16628.

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configure: remove missing and make it autogenerate

The missing file has not been autogenerated because a temporary fix was
employed in acinclude.m4 which blocked update. Removed that fix

configure: remove missing and make it autogenerate

The missing file has not been autogenerated because a temporary fix was
employed in acinclude.m4 which blocked update. Removed that fix and a recent
version of missing is copied to build root.

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acinclude.m4: fix test for default CA cert bundle/path

test(1) on HP-UX requires a single equals sign and fails with two.
Let's use one and make every OS happy.

gtls: add support for CURLOPT_CAPATH

configure: allow both --with-ca-bundle and --with-ca-path

SSL_CTX_load_verify_locations by default (and if given non-Null
parameters) searches the CAfile first and falls back to CApath.

configure: allow both --with-ca-bundle and --with-ca-path

SSL_CTX_load_verify_locations by default (and if given non-Null
parameters) searches the CAfile first and falls back to CApath. This
allows for CAfile to be a basis (e.g. installed by the package manager)
and CApath to be a user configured directory.

This wasn't reflected by the previous configure constraint which this
patch fixes.

Bug: https://github.com/bagder/curl/pull/139

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